Segmenting power storage into lead-acid and high-energy-density modules reduces engine heat exposure, extending durability while lowering costs.
Inclined partition guide portions align container and lid components, preventing separator contact and short circuits during heat sealing.
A lead acid battery negative grid uses a low-tin alloy with a bismuth boundary layer at the strap interface.
A parallel battery system connects a lead storage battery with a lithium titanate cell to stabilize open-circuit voltage.