what brand of battery do you run?

Cheapo $30 rebuilds. run 'em until they croak. Maintenance free still have big common caps dont they? Everytime you drain a car battery you knock 10% off its cranking power (old timers advice) Why cant you rebuild your batteries? Buy the plates and acid and charge them....? The Optima batteries take a special charge procedure. IF they are dead, they wont change. Put another battery in parallel with it and itll start to take a charge again. charger will see it as one big battery, charge to 10.5V then charge optima alone. HF battery tender is like $9 on sale.