You can use 0505 DC-DC converter and two TP4056, one of them floating, to charge batteries independently. In this case, second TP4056 is powered from DC-DC, ground of this TP4056 connected to common wire of two batteries connected in series.
You can use 0505 DC-DC converter and two TP4056, one of them floating, to charge batteries independently. In this case, second TP4056 is powered from DC-DC, ground of this TP4056 connected to common wire of two batteries connected in series.
