Amass XT60 Connectors, 5 Pairs

Unit Pack Power 48V 13Ah Hailong Downtube Battery

Best for: Replacing a dead Hailong-style downtube pack on a 48V bike · Conversion kits using a Hailong mounting plate · Riders who want a known seller with a warranty process rather than a no-name listing

Anderson Powerpole 45A Connectors (Housings and Contacts)

Anderson Powerpoles are the modular red-and-black connectors used on many higher-end kit batteries and on the discharge leads of some production e-bikes. The 45A contacts suit 10–12 gauge wire and the housings snap together into a keyed pair. They are crimped rather than soldered, which some builders prefer, but they need the proper crimper to be reliable; a poorly crimped Powerpole is a heat source. Buy genuine Anderson housings and contacts — the clones fit poorly and the contacts lose spring tension under vibration.

Best for: Replacing or extending Powerpole battery leads · Builders who prefer crimp connections to solder · Making a second charger or discharge lead

Julet Waterproof Connector Set, 2/3/4/5/6-Pin Pigtails (generic)

Julet (and the near-identical Higo) round waterproof connectors are the signal plugs used across kit bikes for throttles, brake sensors, PAS, displays and lights. A pigtail set gives you male and female leads with short wire tails in the common pin counts, so you can re-terminate a component that came with bare wires or splice in a matching plug after a connector breaks. They are not crimp-it-yourself connectors; you solder or crimp the wire tails to your component, then heat-shrink. Match the pin count and gender to the plug on the other side.

Best for: Re-plugging a throttle, brake or PAS lead with a broken connector · Adapting bare-wire components to a Julet harness · Kit builders keeping a selection on hand

Unit Pack Power 48V 13Ah Hailong Downtube Battery

Unit Pack Power (UPP) is one of the longest-running aftermarket battery sellers on Amazon, and this 48V 13Ah pack in the familiar Hailong bottle-style case is their bread-and-butter product. It is the pack people reach for when a Hailong-mount bike from a lesser-known brand has a dead battery and the manufacturer is no longer answering email. The case has a built-in key lock, a USB port on most versions, and a standard Hailong slide rail. The 13Ah capacity puts it in the middle of the range: enough for most commutes, not a long-range upgrade.

Best for: Replacing a dead Hailong-style downtube pack on a 48V bike · Conversion kits using a Hailong mounting plate · Riders who want a known seller with a warranty process rather than a no-name listing