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 is preferred)?
- Is this one p-channel MOSFET able to switch fully on, even when the battery is almost empty (2.9 V) or would another fit to this circuit better - SMD preferred?
I've found a lot of solutions out there, but either for 12 V-stuff or oversized.