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Part# 11-03881
MFR Model# RG-35A


Recombinant Gas - The RG Series are low resistance, valve regulated lead acid (VRLA) batteries.

  • Superior starting power
  • Reliable essential power in the event of a generator failure
  • Low impedance design
  • Maintenance free
  • Constructed with non removable vent valves - no addition of electrolyte or water required
  • Aerobatic: Non spillable at any altitude or attitude
  • Factory tested to assure airworthiness
  • Shipped fully charged and ready to install
  • Manufactured with absorbed glass mat separators (AGM)
  • RG Series batteries ship non-HAZMAT

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.

Battery Type
Ampere Hours
Max. Weight
Our P/N
Battery Diagram PDF
Sealed Lead Acid
29.5 lbs.


  • Voltage: 12v
  • Ampere Hours: 29
  • Weight: 29.5 lbs
  • Cold Cranking Amperage (CCA): 390


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Great service and free shipping on a battery.

Louis S
December 30, 2019

Shipped promptly and was well packaged. Good working Battery.

Michael S
November 29, 2019

The Concorde batteries are wonderful. I think the last one I had lasted at least 5 years and one of those years the plane was at another airport where I couldnt recharge it. Aircraft Spruce had the battery to me very quickly.

Robert T
November 21, 2019

Works as advertised.

Sean D
November 11, 2019


Philip S
August 6, 2019

Battery works great and came highly recommended by my A&P.

David R
July 20, 2019

December 27, 2018

Quick delivery as always. I got 7 trouble free years from the last Concorde battery - looking forward to the same from this one.

November 30, 2018

Great Battery. I keep this on the BatteryMinder and fly about 150 hours a year. The last battery started to turn the engine over a little slowly and once refused to after 5 years. I figure after 5 years a battery doesnt owe me anything. Replaced it and It fires up like its eager to go. No acid, no fumes, no trouble.

George W
September 27, 2018

This was an easy swap for my old Concorde battery. It lasted 5 1/2 years, so I definitely got my moneyâs worth out of it.

Isaiah P
September 20, 2018


Q: Will this Concorde RG-35A sealed lead acid battery come charged and ready to install - or do I have to do the first charge charging of it?

Yes, all of our sealed aircraft batteries will ship charged and ready to install out of the box.

Q: What is the cold cranking amperage on the Concorde RG-35A battery?

The Cold Cranking Amps (CCA) is 390 on the RG-35A.

Q: Is the Concorde RG-35A a direct replacement for a Gill G-35? That is the battery I have in my 1975 Sundowner.

Yes, this is a direct replacement for the Gill G-35 battery.

Q: Is the Concorde RG-35A a direct replacement for a Gill G-35? That is the battery I have a Socata TB 10

Yes, the RG-35A is a direct replacement for the G-35. Both will have the same applications.

Q: Will this battery fit into a 1948 Beech Bonanza? Is an STC required for installation?

Yes, this is the correct replacement battery for the Beech BE35. Installation of the battery is covered under the STC.

Q: Is this the battery for my PA-32-260?

Yes, the RG-35A and RG-35AXC can be used on the Piper PA-32 PA-32-260, PA-32-300, PA-32-301, Turbo PA-32-301T, PA-32R-300, PA-32R-301, Turbo SP PA-32R-301T, PA-32RT-300, Turbo PA-32RT-300T, Seaplane PA-32S-300.

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