You can save a little power in a lot of places. These solar gadgets cover household cooling, portable power, trickle charging, and more.

You’ve had several columns about a guy who doesn’t drive often and wants to keep his battery from dying between starts. You recommended a trickle charger to keep the battery topped up. Another reader ...

One year, I discovered my car was battery dead after returning from Florida. Had I purchased a trickle charger, it would have saved me from having to replace the battery. If you are in the market for ...