[JERRY2KONE]

If your lucky there might be some kind of a miniature "pot" switch that you can make minute voltage adjustments with. Then you can just calibrate each charger to the same voltage. I was kind of thinking that you might run into this problem, but we never know until someone tries it out. You are the guinee pig here. Thank you. Anyway hopefully you can find a loop-hole with this setup and get it to work right for your application. Good luck.