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CONCORDE RG-35AXC PLATINUM SERIES SEALED LEAD ACID AIRCRAFT BATTERY
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RG-35AXC has the highest cranking power and capacity in the 35 Group. Recombinant Gas - The RG® Series are low resistance, valve regulated lead acid (VRLA) batteries.
NOTE: This aircraft battery is not designed or intended for turbine aircraft engine starting applications. Warranty coverage applies to reciprocating aircraft engine starting, and standby / essential power installations. *NOTE* - The STC for some aircraft is available at an additional cost please call 877-4-SPRUCE (777823) if applicable to your aircraft.
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Wonderful battery that has never let me down. Never, and my first one was badly abused charging with car chargers and depleted to below end voltage on a long flight with a dead alternator. That battery still lasted five years before a cell died. It still started the engine just fine, but it would not pass a capacity test. Nine years later it is still good enough to run the 2000 lb hangar winch once in a while. Along the way I set the ship's alternator to the owner's manual recommendations for summer and winter voltages (14.2 - 14.4v for my average temp). It is also babied because I use the VDC BatteryMinder 12248-AA-S1 and now the -S5 charger/maintainer continuously when the plane isn't flying. I also have a solar charger from VDC for when its parked on the ramp somewhere. The thought isn't to save money: It's to have a reliable battery. The second battery is just turning four years old and still passing the Concorde capacity test. It has been babied more than the first so I expect it will last longer than the first, which beat the competition by about 2x at a similar cost. A word of warning: AGM/RG batteries do not tolerate abuse as well as flooded. Boil a flooded and you can refill it. Boil an AGM and it's toast. Ditto undercharging. To get max life you have to be a bit anal. |
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Wonderful battery. Combined with the correct BatteryMinder charger/maintainer I have gotten five years out of this battery and it still passes the ICA. The cost is comparable to a flooded battery, plus free shipping. I put an EI VA-1 volt/ammeter and Zeftronics ACU with OV and ground fault protection in the plane and set the VR for summer and winter voltages per the owner's manual. So far so good. |
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Bought one in 2006 and now 8 years later it is beginning to show signs of weakness. It has never left me stranded and I keep it on a trickle charger when in the hangar. A great product. I'm buying another one. |
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Just received and installed in my light twin. I have been plagued with hot start issues. I've installed bogart cables, sky tech starters, and alternator conversions.. Better, but performance still lacked. My Gill battery finally gave up after 2.5 years. I decided on the AXC for the few extra cold crank amps, I do not regret the extra $30. I am finally satisfied with the starting performance. |
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I am just now replacing the one I put in 11 years ago in my Twin Comanche. The pink batteries I used to used lasted 3 years maximum. Pretty much explains why I like it. I especially appreciate the fact that these batteries completely eliminate the need for battery box maintenance. No more cleanout. No more baking soda. No more messy battery box paint. |
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This is the best battery ever created.!!! |
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Have given zero problems in 5 1/2 years, first thing I bought for my Bonanza and going strong |
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Finally a sealed battery that works and does not seem to fail after a year or two like the old ones did. I run a maintenance shop and have been switching customers over as needed to this battery. Some planes tend to boil batteries over causing severe damage to the belly and structures. This battery not only works well, has a very low self discharge rate and, extra capacity, it does not boil over. So far, well worth the extra money over the standard batteries. |
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This battery was in my plane when I bought it five years ago. I dont have it on a trickle charger, nor do I know what the optimum voltage my generator should be feeding it is, much less what its getting. Still, its never left me stranded, and the battery box looks brand new. Im only replacing it now for my own peace of mind. I used Gils in my previous plane. I was lucky to get two years out of them, and I was constantly cleaning out the battery box. |
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Best batteries ever made. If you are bored and like to clean battery boxes or pull your battery out every week to charge, dont buy this battery, look to Gill. |
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Expensive and only lasted 3 years then completely kaput. It has been on the same battery minder my previous battery was on. The Gill lasted twice as long. |
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You can not beat a sealed Concorde Battery with extra cranking. Ive had them go 5 years for me. |
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Fantastic product! Just bought my Second Concorde AGM battery from Aircraft Spruce, I have used them in two aircraft that i owned. I have changed them out after 8 years. They had not failed yet, but did have diminished capacity and were abused with the wrong chargers. |
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Excellent battery. With periodic maintenance it lasted seven years in my 180 in the high heat of Texas. I hope to get seven years out of my new one. |
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There may be others less expensive but none are as powerful and efficient as the Concorde RG-35AXC |
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Did what it advertised, was delivered promptly and well packed, fits fine and starts the aircraft nicely. Lets talk in 3 years since thats the real test. |
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Great battery. We replaced it with an identical make and model. We got 5 years and 378 Flight hours out of the last battery and I was very happy with its performance and reliability. |
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Bought this battery based on fedback from various forums and other sources. Only time will tell if it is deserved or not. I have a relatively good experience with a previous flooded Concorde battery which I got 6 years of use. Shipping was fast and efficient. My experiences with Aircraft Spruce have been good. I use them often. |
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Used this to replace a pink in my new-to-me plane. The pink wouldnt crank the engine, and had issued with the radios. Concord sealed batteries have always been good for me, in my planes and the planes I work on. Worth the price difference in just not having to carry the jumper cables! |
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Bought a new Concorde RG-35AXC (June 2017) to replace the one in my 1976 Cessna Cardinal 177FG (180HP). The previous battery (also a RG-35AXC) had been installed back in 2009! Any battery that last 8 years is a 5-star in my book. The new battery turns the prop over extremely fast, am very pleased with the performance and super high quality of this battery. |
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Great battery, but only lasted 3 years in my Bonanza. We have a nearly new Plane Power alternator STC, carefully set to charge at 14V |
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Very good service and arrived in 2 days.RG35axc replaces the same battery after 5 yrs. of use. The old battery tests good but flying to a remote area and one less thing to worry about.Also use a Battery Tender Plus to keep it charged .Only problem is have to modify battery box cover as it wont fit the top of the battery I fly a 68 C177. |
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Nominal voltage was over 12.5 volts, allowing for a quick change then placing the battery into service, with no lost missions for the customer. |
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Excellent performer. |
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This is the only battery that I will use now in my R44 helicopter. The basic R25 just wont do the job... I installed a new battery and a new starter before reverting to the RG35AXC.... twice the cold cranking amps... it rips! |
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My last RG-35AXC Lasted 5 1/2 years in my Beechcraft V-35-B in the extreme Florida climate. Still working OK when removed. A super product. |
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I got this battery to replace a four and a half year old 35AXC. This is now my third one, and the two previous ones had good service lives. |
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I have owned my Cherokee 235 for almost 20 years now and was replacing the battery every 2 years. I purchased the XC battery seven years ago and just now replaced it. My plane was still starting but it showed signs of getting weak when starting in temps in excess of 105 degrees F. Best battery I have every had. |
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Awesome battery, upgraded from Gill, the difference in CCA spin up the big 3 blade prop way faster. Love not having to worry about acid leaking. |
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Simply the best aircraft battery on the market right now. Shipping was free and still arrived in only three days. |
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This platinum series battery from Concord RG35AXC is a solid performer in my Mooney F model. I have a SKY-tek starter installed and this battery gives solid starting power. Like other commenters I started getting 2 yrs out of the Gill batteries and I was fighting some corrosion with the wet cells. I had used Concorde before the Gills and got 5 yrs out of the wet cells. So in March 2011 I purchased this upgraded Concorde battery and Im so glad I did. It just started weakening several months ago (in Aug 2017) so I did not want to go into winter and risk getting stuck due to a battery issue. So, am replacing it after 6.5 years. Thats right...6.5 yrs. It has the highest CCA in its class and it has never shown signs of corrosion. Note: I have kept a low amp AGM automatic charger on it during periods longer than 3 weeks and colder winter periods. Perhaps this has helped??? I should note that the Gill tech staff has been very helpful and knowledgable in my past conversations w them. |
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Just bought my second one. First one still going strong pushing 8 years but in light of some unrelated age concerns I chose to be cautious. Ol Pink (3 in 4 yr) left me high and dry on several occasions. Just get the battery AND the BatteryMinder charger! |
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Why anyone would buy a Gill non sealed battery is beyond me. This is 10x the battery for about $100 more. And... it doesn’t leak acid inside your 100k investment. A no brainer |
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Battery arrived on time and no damage. Voltage was good to go for installing. Really like the free shipping! |
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Received battery a day early! It was charged and ready to install that same day. And to boot the customer service was awesome! |
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The five star rating is solely on expectations based on the last Concorde RG-35 battery I had. It lasted 8.5 yrs, and I used a generic battery minder when parked. The battery had always performed well and there was no corrosion at the terminals. |
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Installed 9/2011, maintained with BatteryMINDer Concorde-bespoke charger, aircraft voltage regulator set at 14.2v. Lost the alternator in IMC last month, drew the battery down to 11.8v. Now does not take a full charge. Excellent longevity given this stress. |
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This is my second Concorde battery. The first one went to seven years. The three gill batteries before that went an average of two years each and they spewed acid on the inside of my battery box. This one will not do that. Just be very careful with tightening torquw on the terminals because it can strip easily and other than that it’s the best thing going |
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Good battery. For Cessna 182P was disappointed in having to modify battery cover to make battery fit. Got mod drawing from Concorde as they know the battery doesn’t fit these airplanes. Mod was easy but would have like to have known before I purchased. |
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Best battery in the business. This is my second one in 5 years. |
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The first Concorde RG-35AXC I purchased lasted 10 years on my Cherokee 140. I kept it maintained with a Battery Minder with a desulferizing function. This new one came promptly and in good shape. Voltage measured 12.65 volts so I put it on a trickle charger overnight before installing to bring it up over the recommended minimal voltage. It works great and really spins my 0320 Lycoming. Would highly recommend this battery and Aircraft Spruce. Great product- no leakage or battery box corrosion or terminal corrosion for the life of the previous battery. |
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Great battery arrived in less than 2 day. |
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Best battery available, but not cheap. Last one, I changed out after seven years. |
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This is the third time I have purchased this battery for my Turbo Lance. The first battery I got 3 1/2 years and the last one got just over two years. This battery is worth the extra $$$ over the red one. No spills and plenty of juice to turn over the big Lycoming. |
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Best battery made |
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Best battery I have seen in my 46 years as an active A&P, and an IA. lasts way longer than your typical aircraft battery, with no boil over damage to battery boxes. |
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I have had long service from regular RG-35A batteries since 1990 but was never able to crank the IO-550 in my C-182 thru on the first try. Recently tried a RG-35AXC and for the first time since the IO-550 install in 1996 it cranks thru compression on the first try , every try , even in below freezing weather. Wish I had known the AXC version was so much more powerful a long time ago. Im sold. |
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Arrived well packaged and ready to install. This battery along with the Batteryminder has kept my 1967 B33 starting like a champ. Even in the hot 100 plus degree days in hangar storage in Texas. |
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Great battery. Will last 5 years (capacity at or above 80%) with proper maintenance. Use the Concorde recommended Battery Minder. |
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American made in the tradition everything used to be. Got 8 years out of my last wet one in my Trubo Arrow IV, delighted to trade up to maintenance free. Bought brand new Batteryminder to go with it as my previous was too old to upgrade to sealed battery specs, and had them send me a remote temp sensor to go with it as in the winter I heat the interior of the Arrow while the charger is external in a very cold hangar, so the attached sensor is innacurate. Expect to get many years of reliable use, it’s an excellent product. Found out recently Concorde makes milspec deep cycle batteries for marine and RV use, ordering some as well. |
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Last one only lasted nine months. I noticed something different about it when I installed it. I have one that lasted six years. I hope this one lasts that long or longer. |
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fast shipment and just what I wanted |
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Arrived quickly and shipped easily since it’s sealed. |
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I just took one of these out of service that had been in service in the aircraft for 9 years! I installed one in my own Piper PA-12 3 years ago. Still going strong. With 48 years in the aircraft maintenance business and after servicing hundreds of batteries, this is the best battery for airplanes I have ever been around. And no boil over mess. |
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I just bought a new one of these (RG-35AXC) to replace the one I bought 6 years ago. |
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Always a good choice...last one was in service for 4.5 years...Speedy 3 day delivery from Spruce... |
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Pricey, but a direct drop in for my 1958 Piper Tri-Pacer PA22-150/160. |
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Dont ever fly with this battery in a discharged state. It will play havoc with your electrical system. I lost my ammeter - smoked it before popping the 60 amp breaker. Make sure this battery is fully charged and keep it that way. These things dont function like your typical auto battery that seem to tolerate such conditions. |
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I have a C182 and it started this engine very well. For the money you would think it would last longer that 2 years, but it worked well til it died. |
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This battery has significantly more cranking amps and less maintenance due to being sealed. Important to do new weight and balance as it weighs 5 lbs more in order to get extra amps. I keep this on manufacturers recommended “ battery minder†charger in the hanger to extend life and health of the battery |
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Good Experience |
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This is a replacement for the same battery that only lasted one year and less than 30 hours of tach time. It would not hold a full charge and had a bad cell on one end that gets warm when charging. Currently waiting on a warranty claim. |
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Shipped in good condition, charged from the factory, installed in place of the g35 Gil I had, fit perfectly in the Hammock aviation stainless steel battery box and spun up the io520 like it had the plugs out. My first Concord. It defiantly will not be my last. |
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The battery arrived earlier than expected, packaged well, and with complete documentation. It was the correct model, as ordered, and it fit and performed as expected. |
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This is the second Concorde sealed battery I have used. The first lasted well over four years, and is still showing good voltage. However, the capacity seems to be somewhat diminished, and I don’t want to stress the charging system. I do recommend using a Battery Minder with this type of battery. |
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Extremely fast shipping. Had it in two days. Shipping was free too! Battery arrived ready to install and in perfect condition. |
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Purchased in 2008 and still going strong 11 years later. Starting a 200 hp IO-360 with 640 hrs of operation in an AcroSport 2 . Best battery going. |
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Needed a new battery to give the freshly overhauled io520 in my C185 floatplane some cranking juice. No worries of hung starts now! Have to wait till winter to see how good it cranks when below freezing. No hazmat shipping is a big plus here in rural Alaska too. |
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The battery is my standard but getting it from Aircraft Spruce makes it a no-brainer. Fast, cheap, and easy. |
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Battery failed in 20 months 100 cycles. Correct battery minder in use, no unusual environmental conditions (Virginia) or equipment (Cessna 180). Concorde advised that credit under warranty would be $50 +/- for a $340 battery. They sent me to Aircraft Spruce as distributor, who has a warranty card on line with no mailing instructions so I have to wait for someone to call me back with mailing instructions! This isnt my first rodeo. Been flying 50+ years and owned all or part of seven airplanes over than time. |
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Cant say enough about the Quality & Fit. |
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I wish my experience was the same as many here. I purchased this battery from Aircraft Spruce 10/4/17. Now (7/11/19), approximately 20 months later, its dead. Replacing with same and hoping for better results. |
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Arrival in 2 days with free shipping in good condition and has great cranking power. |
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Timely and accurate. |
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My 3rd 35axc. First one went 5years so I replaced it and it’s still going strong on my Polaris Ranger. 2nd one failed at three years. Disappointing but it happens. I have high hopes #3 will be a 5year battery. |
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An exact replacement for a 5 year old concorde Rg-axc which was getting sluggish but still firing up my Beechcraft Sundowner. Arrived from ACP East to Tallahassee, Fl., in about 3days, faster than a letter! I left a note to leave on the step so I would not have to carry downstairs. Concorde provides good long service and is about good as they get. Have been buying from AirCraft Spruce when they started out mostly selling spruce, dope and covering supplies near the Griffen airport. Great Company! |
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Concord is an excellent battery !! I changed mine out with 5 years in service and still starting my twin good. I have heard of Concord batteries going but for the price and dependability you can’t go wrong. |
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Great product. Fast delivery |
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Great battery with plenty of power. |
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Great battery. Can’t go wrong- my last one lasted 5 years |
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Easy Website Navigation, Easy Payment Options, Excellent Product & Super fast shipment- thanks!! |
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Strong battery! Easy to handle installation. |
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Shipping was fast and the ordering process was quick and accurate. Thank you. |
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Had trouble with ordering process but they corrected problem. Otherwise would be 5 stars. Good product, fast delivery. |
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Great item - bought to replace the exact same battery because the original one was so good!!! |
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The battery came to me fully charged. I installed it into my plane, checked the electrical system and then took off for a few times around the pattern. So far, Im very pleased with the new battery. |
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Excellent drop in replacement. I had the RG35a and it was in for 10 years before the cranking power started to drop hope this one lasts as long. |
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Good value for a great battery |
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No surprises |
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Good battery and will last |
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Bought one in 3/2012 and it is beginning to crank a little slow. Looks like almost 8 years out of the battery so I will be buying another in the next year. |
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Came on time, undamaged and as advertised. Premium product. |
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Concorde has become the battery we suggest to our customers. They do a great job and priced well. |
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Just received my latest RG35AXC. The first one lasted 8.5 years!!! It will still start the plane, but is getting a little weak even after charging with the battery minder. Concorde is the only battery Ill use. |
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Just replaced the one in the plane after 5.5 years, so not too bad. I hope this one lasts just as long! |
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Just purchased the RG-35AXC to replace my last one, which lasted 7 years. Very reliable, powerful battery. |
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Delivered quick and got me back in service! |
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Excellent |
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Arrived on time, properly wrapped, no damage. The cost was similar to that of a Harley Davidson (HIGH). |
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You always deliver fast. Some how I got the wrong battery and you immediately corrected it and sent me the right one with a label to send back the exchange. Thanks for your fine service. |
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Good staff |
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Arrived quickly (2 days), worked as-expected. |
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On time delivery, packaged well, easy to install. Hope it performs better than replaced battery |
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Expensive but powerful battery. |
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Replaced the previous RG-35AXC which was still turning over an O-540 after almost 8 years although getting weaker in cold temps. Fresh battery delivered with a good charge. Spins the prop much faster now. Hope to get another 8 years out of this one. Excellent service with free shipping included. |
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The previous one of these lasted 5 years in a Cessna 180. Best battery performance ever. One day delivery was great. |
Is this battery a drop-in replacement for my current Gill battery in my 182? Or will I be required to: 1) purchase a volt meter to determine if it is charged. 2) get a torque wrench that measures inch pounds to ensure the terminals are not over torqued. 3) have an a&p ia do the paperwork to approve the install 4) modify the battery box lid so it closes properly 5) get a special trickle charger that works specifically for this battery. As an owner, I just want to replace the battery and go fly. Regards, Greg
Yes, this is a drop in replacement for this aircraft. 1) We maintain the charge in the batteries while they are in stock. A volt meter is a good way to determine present state of charge. 2) Please do pay special attention to avoid over-torquing. Torque information comes with the battery. 3) You need to contact the local FSDO for this question. per the manufacturer, we have an STC and PMA. The STC is available at no charge. Per Concorde, they just need the information sheet completed and they can can email for free. 4) Some installations do require modification of the battery box cover. This is covered in the STC. 5) We only recommend the BatteryMINDers listed under the "Accessories" tab of this web page
Will it hurt this battery to trickle charge it? RG-35AXC
No, trickle charging this battery should cause any harm to the battery.
I just purchased a Concorde RG-35 AXC battery. In the Q&A section, it says an STC is available at no charge. How do I go about obtaining the STC?
There is a form that is available in the "Documents" tab. It is the first one listed. Please download it, fill it out, and send it to Concorde and they will send the STC at no charge.
What is the CCA rating of this RG-35AXC battery?
The cold crank amps rating is 440.0.
I've had the RG-35AXC for about2 1/2 years now and haven't been flying to much lately, plane has been sitting for almost a year.. I try to go out and start and run the engine once a week or so. The temps here in Miami and rather high, I mean HOT. anyway the battery appears to be really low and won't turn over the engine. What is the best way to charge it back up...right now I'm using a slow 2amp charge or should I boost that up higher???
Concorde recommends the battery minder part number 11-07739 for charging, this is an 8 amp charger.
Are the Concorde RG-35A and the RG-35AXC batteries the same physical size?
Yes, they are the same size.
Is the RG-35AXC a drop-in replacement for the Concord RG-35?
Yes, the application is the same for both RG-35A and the RG-35AXC. The XC model is extra cranking and provides the highest cranking power and capacity in the 35 line. It is commonly used in cold weather applications.
What are the dimensions of this RG-35AXC battery? I want to make sure it fits in my battery box.
Please see the link for the "Download RG-35AXC Diagram" in the 'Overview' tab of the web page. The dimensional drawing is included in the PDF.
What is the CCa of the RG-35axc?
The cold crank amps rating is 440.0.
Will the RG-35AXC fit my PA-28-180?
Yes, per the application chart, the RG-35AXC should be the correct battery for your aircraft.
Is this RG-35AXC battery considered dangerous good in order to be air-shipped?
No, it is not considered haz-mat for shipping.
Can the RG-35A be replaced with a RG-35AXC without re-doing the STC paperwork and filing a 337? Can the swap be done with only a log book entry under 14 C.F.R. 43 app A.c.24?
Yes, the FAA Approved applications are the same for the RG-35A and the RG-35AXC so they are interchangeable as replacements.
Will the Concorde RG-35AXC fit the Mooney M20F?
Yes, this will fit the M20F.
I presently have the Gill 243, this looks like it is the best replacement for that battery I have a Mooney M20m bravo?
This battery would not be a direct replacement for the g-243 as it is 14v and the 243 is a 24v. The Concorde replacement would be a n RG24-15.
Is the RG35 AXC a direct replacement for the G35 Gill? Going into a PA32-300
Yes, the RG-35AXC fits the same applications as the G-35.
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