12V40Ah Auxiliary Power Supply for new energy vehicles offers wide temperature resilience (-40°C to 80°C), ideal for EVs and hybrid systems. Features 40Ah lithium-grade longevity, sealed durability, zero standby loss, and peak 80A discharge. Engineered for extreme cold starts, long-term storage, and reliable auxiliary power in commercial fleets, off-grid, and harsh environments. Cost-efficient, maintenance-free solution with 5.5kg lightweight design.More