Category Troubleshooting & Maintenance

Can You Mix Old and New Batteries in a Bank?

Find out why mixing old and new batteries in a bank causes serious problems—you won't believe what happens next.

Properly leaving a marine battery charger on requires a smart charger—find out what happens if you don’t.

I inverters silently drain your battery at up to 2 amps, and you won't believe how much power is actually lost.

Most solar panels can damage marine batteries without a controller to stop overcharging.

The answer might surprise you, as a faulty isolator silently drains your battery dead.

Discover signs of a loose battery terminal before your vehicle leaves you stranded.

The telltale signs your battery isolator is failing include voltage gaps over 0.5V and flickering gauges.

Discover how to test a marine circuit breaker easily, but a hidden fault could still be waiting.

How to test a battery isolator with just a multimeter and avoid costly electrical failures.

Don't ruin your marine battery with tap water—discover the safe watering steps that prevent damage.