I want to add to this famous single cell lithium ion battery charging module a reverse voltage protection:
I ended up with the following circuit (Load draws up to 700mA):
- Is this already enough, or should I add a zener-diode/transistor etc (if yes which one - smd preferred)?
- Is this one p-channel mosfet able to switch fully on, even when the battery is almost empty (2.9V) or would another fit to this circuit better - smd preferred?
I've found a lot of solutions out there, but either for 12V-stuff or oversized.