I have a Sears deep-cycle lead-acid 12v battery already which I've only used once or twice a year for certain power applications. I was thinking of purchasing an identical model and wiring it in ...

There are still a lot of hand-held tools in use with Ni-Cd or Ni-MH batteries. The simple charger has no switch-off criteria, and you need to measure and adjust the charge time, else you will badly ...