The Optimate 2 Duo Battery Charger is a cost-effective solution for long term maintenance of lead acid and lithium batteries.Recommended for: AGM , STD, GEL batteries from 6 to 96Ah and Lithium (LiFePO4) 12.8/13.2V batteries from 2 - 24AhProgramme control: Fully automaticInput Voltage: 100-240V 50-60Hz global inputTypical annual energy cost: Less than £1.00 per year (continuous maintenance)Reverse drain current: Less than 1mAOutput current (bulk charge): 2AAutomatic desulphation: YesCharge time limit: Safe to leave connected for monthsMaintain / test cycles: 30 min/30 min (alternating hourly)Size: 167 x 65 x 46mmWeight: 800gEnclosure classification: IP54Mounting: Easy direct wall mountingInput cable length: 2mOutput cable length: 2mIncluded Accessories: O1 Weatherproof Eyelet Lead; O4 Clamp Lead for bench chargingOperation temperature range: -20°C / +40°CWarranty: 3 yearsThe Optimate 2 Duo Battery Charger is ideal for all types of 12V lead acid and 12.8V/13.2V lithium LFP batteries, 2