Lead Acid Battery Battery Charger 12V 2A $30
3 stage charging which is constant-current charging, constant-voltage charging and float charging.
Ensure the charger have full enough capacitance and battery liquid is not evaporated.
Reverse polarity protection, short circuit protection, over charge protection.
Input 220Vac 1A. Output 2A 13.8V( float) 14.8V(charge).