BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | TIRE & SERVICE SERVICE & MAINTENANCE TOOLS SERVICE & MAINTENANCE TOOLS 550 DESCRIPTION PART # OptiMate™ 1 VoltMatic 3807-0570 OPTIMATE™ 1 VOLTMATIC BRONZE SERIES 4-STEP 6V/12V 600MA BATTERY CHARGER/MAINTAINER •The best fully automatic battery maintainer •Maintains any type of 6V/12V lead-acid battery without overcharging or undercharging •Ideal for vehicles that are in storage or seldom/seasonally used DESCRIPTION PART # OptiMate™ 2 Duo 3807-0572 DESCRIPTION PART # OptiMate2 Duo two-bank 3807-0573 DESCRIPTION PART # OptiMate 2 Duo four-bank 3807-0574 OPTIMATE™ 2 DUO BRONZE SERIES • Versatile, fully sealed automatic battery maintainer • Automatically saves, charges and maintains 12.8V/13.2V lithium (LiFePO4/LFP) or 12V lead-acid (STD,AGM and gel) batteries •Two-bank model can charge two 12.8V or 12V batteries independently •Four-bank model can charge four 12.8V or 12V batteries independently •Adaptive charge program adjusts to the battery type and condition •OptiMate’s 24/7 smart maintenance guarantees more battery power and longer battery life •Delivers 600mA constant current at 12V •For indoor use (lowest temperature -4 °F (-20 °C) •Automatic shutdown if battery disconnects or short circuits 3807-0572 3807-0573 3807-0574
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