Optima Battery Charger Maintainer Digital 400 Review

Optima developed the first maintenance-free lead-acid batteries back in the 1970s, built for commercial and military use. Later, they introduced the first high‐performance AGM (Absorbent Glas Mat) automotive battery. You may know them as the red-top battery that looks like a six-pack. Now, they’re directing their groundbreaking focus on charging batteries with the Digital 400 Optima … Continue reading Optima Battery Charger Maintainer Digital 400 Review