OptiMate 1 DUOOptiMate 1 DUO BRONZE series: 4-step 12V / 12.8V 0.6A battery maintainer.The ‘no brainer’ battery maintainer for the hi-technology battery in your performance power sport vehicle. Guarantees healthy lithium or lead-acid batteries!Ideal for 12V lead-acid & 12.8V / 13.2V lithium LFP (LiFePO4) batteries.DUO: Automatically adapts to the connected battery type. Adapts automatically to Pb or LFP battery. OptiMate 1 DUO does the thinking for you!Charges and delivers long term maintenance automatically. OptiMate 1 DUO makes your battery stronger and last longer, no supervision required!Safe to leave connected. Full electronic protection.24/7: Safe to leave connected. Full electronic protection.Low Volt Start of 4V.Green Technology: Energy saving technology. Stand-by power less than 0.5W. Efficient 24-7 battery maintenance.IP50: Dustproof. Rated for indoor use down to -20°C / -4°F.Includes 2 interchangeable battery connection accessories.