yep sorry the talet cell operates as you specified. the one i have can either charge with a 12.6v charger, or a usbc cable.? i have a couple other regulated batteries that i can choose 12v out.? and thanks for the schematic.? i haven't dived into the schematic or troubleshooting yet, just waiting to hear back from my ticket i submitted before i open the case.? and not a lot of free time lately.