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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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Good quality battery at fair price (for aviation). Hopefully it will last five years like my last one.

Michael O
April 27, 2021

Arrived within a two days. Installed it and operates as designed. Quick and efficient service.

William R
March 31, 2021

Quick service on delivery. Battery is great arrives fully charged.

March 16, 2021

Came fully charged. Cherokee started right up. Along with the battery tender/charger, Im sure it will last for many years to come.

Dave L
February 5, 2021

good value promo service THANK YOU

Alvin M
January 5, 2021

Excellent and Durable Product for Aircraft...Thank You

Yudi K
December 3, 2020

In my not so humble opinion the RG series of Concorde batteries are the best available lead-acid General Aviation batteries. A great product at a fair (by aircraft standards) price. And, they are essentially maintenance free which is a blessing considering how hard it is to access many light aircraft batteries that are tucked away in obscure places.

Robert J
November 23, 2020

Should last many years

Gregory R
September 28, 2020

Very very happy with this purchase and even moreover that I ordered this on 9/14 and received it on 9/16. I was so very impressed that Aircraft Spruce is delivering Amazon service... Very...

John S
September 28, 2020

Great battery that arrived fully charged, in good condition, and very quickly with standard shipping.

Larry Z
August 24, 2020


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.

Q: Does a Concorde RG-35A a direct replacement for a Concorde CB-35A?

Yes, this is a direct replacement.

Q: Will this work on a 1968 PA-28-180? What is the difference between this and the super sealed lead acid (35AXC) ?

Yes, this fits the PA28-180. The difference is 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.

Q: Will this fit the Beech (1967) Muskateer A2324. Is the RG35AXC the same as the RG35A is I just want extra craking power?

Yes, the RG35AXC can be used in the Beech Muskateer. Yes, the XC is just extra cranking.

Q: Will the RG-35A fit in a PA-24(1958) Comanche battery box?

Yes, the RG-35A is a standard replacement battery for this aircraft. Any modifications may affect the fit, but generally this is a drop in replacement.

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