Quick view OptiMATE Lithium Battery Charger/Maintainer These OptiMATE Lithium Battery Chargers are a BIG deal! This high efficiency diagnostic charger and tester for LiFePO4/LFP batteries is perfect for charging of a high performance 12.8V-13.2V LiFePO4/LFP battery sized from 2.5 to 120 Amp-hour. Special... $181.95 Add to Cart Compare