what is battery tender for cars?
<answer> It is designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. <context> With a Battery Tender, your vehicles battery will still be as fresh as the day you left it. Battery Tender chargers are designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. Most popular Battery Tender for full size vehicles.