Hi terry, i tried to use the a123 hooked directly to the rcexl ignition V2 and it didn't work unless you're using 2s. Measured voltage was 3.34V without load. I think it needs to be in a fully charged state to work and registering higher than 3.3V
Anyway, I am quite happy so far with the results of the step up device which worked with the A123 very well and delivered a good 5.1v. The A123 settles down to 3.2~3.2V and holds it until its almost drained.Think I may go that route for some of my setups.I need further testing at WOT.

I used a li fe charger to charge these batts.A quick charge takes 15mins from fully drained!
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