rebelrider.mike
Member
- Joined
- May 25, 2017
- Messages
- 548
I've read all the treads I could find here relating to TP4056 charging boards, and many mention this issue, but I haven't found a solution.
Specifically, I mean that if you have a battery, say 3s, and you want to charge it with 3 TP4056s you have to isolate the grounds or you get a short and melt the boards.
One solution is to use a different power supply for each board. I'm not sure I understand that, since each power supply would have the same AC power source, ie, a wall outlet. Or is the conversion from AC to DC enough to isolate the grounds?
Sorry, I'm an electronics newb, so I still don't understand a lot of what's going on.
Here's a diagram of what I would like to do:
So as long as the cells in the diagram are Not connected things work fine.
But as soon as the cells are connected in series, there is a short across the black wire on the TP4056 in side?
Is there a way to isolate the charging boards without using separate power supplies?
Specifically, I mean that if you have a battery, say 3s, and you want to charge it with 3 TP4056s you have to isolate the grounds or you get a short and melt the boards.
One solution is to use a different power supply for each board. I'm not sure I understand that, since each power supply would have the same AC power source, ie, a wall outlet. Or is the conversion from AC to DC enough to isolate the grounds?
Sorry, I'm an electronics newb, so I still don't understand a lot of what's going on.
Here's a diagram of what I would like to do:
So as long as the cells in the diagram are Not connected things work fine.
But as soon as the cells are connected in series, there is a short across the black wire on the TP4056 in side?
Is there a way to isolate the charging boards without using separate power supplies?