High-quality waterproof connection cables and wiring harnesses for e-bike and lithium battery systems, compatible with XT60, XT90, M19, M23, M25, and MR60 connectors. Features high-current tinned copper conductors with freeze-resistant silicone wire, IP-rated waterproof connectors, and optional fuse or signal wire for safety. Ideal for battery packs, DC charging, and new energy vehicle applications.