Choosing an ignition backup battery for an electronic ignition piston aircraft engine

[Neal]

Here is the pigtail for the Optimate 10A charger. I ordered this and will consider installing this on the battery.

Amazon.com: OptiMATE Cable O-11, Weatherproof Battery Lead, Heavy Duty/Auto/Marine : Everything Else

Amazon.com: OptiMATE Cable O-11, Weatherproof Battery Lead, Heavy Duty/Auto/Marine : Everything Else

www.amazon.com

This is the Optimate charger I use on my EarthX starter battery:

Amazon.com

 

[Neal]

TCW responded to my inquiry about using their IBBS battery like we use for our G3X as a backup for the Light Speed electronic ignition:

Neal, yes one of TCW Technologies IBBS Battery Back Up would be a suitable replacement.
TCW Support

As CubCrafters has a mount already designed for this, and possibly a dual mount I hear may be used in XCubs? This seems like an ideal solution to have two of these back to back in the right forward panel area, one for the G3X and one for the Light Speed.

 

[Neal]

I think an advantage of the TCW such as the 3AH model is that you could wire this into the GEA 24 to view voltage readings on the G3X. Although our current ignition backup also does this so it's probably moot. But form factor wise this seems like something to consider.

Product:

Integrated Battery Back-up System (IBBS) - TCW Technologies

The Integrated Battery Back-up System (IBBS) provides an engineered solution to enable an endurance bus for critical loads found in aircraft. The IBBS system provides back-up power to critical electronic loads such as EFIS, GPS, Autopilots and engine monitoring systems.

www.tcwtech.com

I didn't look at dimensions to compare the 3AH to the 6AH model. Curious so I'll look those up later.

Documentation:

https://www.tcwtech.com/wp-content/uploads/2020/03/725.0022-Install-Instr-1.8-IBBS-12v-3ah.pdf