OptiMate 1 DUO Battery Maintainer Bronze 12V / 12.8V 0.6A Maintenance Charger

OptiMate 1 DUO BRONZE series: 4-step 12V / 12.8V 0.6A battery maintainer. OptiMate 1 DUO. DUO: Automatically adapts to the connected battery type. Adapts automatically to Pb or LFP battery. OptiMate 1 DUO does the thinking for you!

eBay