In addition to juicing the Optima-specific batteries, the Digital 400 is designed to work with standard flooded 12-volt batteries. To choose the battery type you want to charge or tend ...

Recently, Optima Batteries stepped into the battery charger world offering a handheld 12-volt tender/charger dubbed the Digital 400. Optima, which is well known for its line of AGM (commonly known ...

I installed an Optima Digital 400 battery charger/maintainer. It works on all types of batteries, from smallest 12-volt found on generators and mowers to those found on pickups and larger equipment.

It was an Optima 1200, a battery charger I’d seen at last year ... is a great way for contractors to maintain their fleet’s 12-volt batteries.” I liked the way it shows the battery ...