Hello. I want to be able to have the ability to charge on the go, but I realized my single cell charger method just takes up way too much space and the weight would be nicer if it was lighter (Each single cell charger has its own relatively heavy transformer!). So, I was thinking that the best portable method would be to carry around a dead-simple small CC-CV charger that allows taper voltage adjustment somewhere in the 34 - 37 volt region (It doesn't need to be very powerful - 2A would be fine - small size and light weight is far more desired). The charger would attach to a simple circuit on the batteries that functions as a high-voltage cutoff (HVC). That is, if a cell reaches above a certain voltage, it would cut off the charging current. Does anyone know of any chargers and circuits like this? Since the HVC module would have cell-level basis, it seems also possible for it to detect for low voltage conditions and send a shut-off signal to somewhere else, like the controller. Does anyone know of any suitable circuits? I don't really need a complete BMS with balancing, as I realize that incredibly ups the part complexity and cost - just a dead simple LVC and HVC detector would be nice. I can interface with microcontrollers if it seems like that may be the best solution.