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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



I can get over 6 years out of this battery.

Mark D Verified Purchase


May 26, 2021

Top of the line battery and I will only use a sealed battery any more due to possible acid contamination.

May 14, 2021

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


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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