Instructional Guide: Battery to Controller Power Wiring — What Every Wire Does

Instructional Guide: Battery to Controller Power Wiring — What Every Wire Does

1. Battery + / Battery −: the two big leads carry full pack voltage to the controller. Keep them thick, short, and away from sharp frame edges.

2. Discharge connector: the main plug between pack and controller — it must be rated for your current. Loose or undersized = heat.

3. Inline fuse (or breaker): sits on the + lead near the battery. Without it, one short can cook your wiring — never bypass it.

4. Disconnect / switch: cuts power for storage and wiring work. Always disconnect the battery BEFORE touching any wiring.

5. BMS discharge lead: the battery's own protection circuit watches for over-current and under-voltage — don't bypass it to "fix" cutouts.

Wiring question? The Current Supply is always happy to look at your setup.