Here is a crude but efficient tricky charger for Lead Acid Battery. It uses a 12 volt car bulb as current regulator and charge status indicator. The. Aspencore network. News & Analytics ... Tricky 12V ...

This highly rated charger from Ampeak has automatic charging for all types of 12V lead-acid batteries. It won’t overcharge or overheat. Stanley 15-Amp 12V Battery Charger/Maintainer ...

With a smart 12V trickle charger and maintainer, you can revive your car battery in a relatively short amount of time. And this one from GPED is discounted to $22 on clearance at Walmart , 56% off ...