Luna Cycle Parts

Luna Cycle is an American electric vehicle pioneer based in El Segundo, California, that played a monumental role in launching and popularizing the lightweight electric dirt bike movement in North America. Founded on the principle of delivering high-performance, open-architecture electric mobility, Luna Cycle established the benchmark for high-output lithium battery engineering. Their custom 72V battery packs are renowned across the industry for utilizing high-discharge tier-one cells, intelligent smart BMS protection, and ruggedized packaging that withstands violent off-road riding.

When the Sur-Ron first arrived in the United States, Luna Cycle recognized its incredible potential but immediately identified the primary constraint: the stock 60V battery pack. While the factory pack offers decent range for casual riding, it experiences noticeable voltage sag under hard acceleration and caps overall motor speed. Luna Cycle revolutionized the aftermarket by engineering true 72V nominal lithium battery packs designed to drop directly into the Sur-Ron battery compartment. Stepping up from 60V to 72V provides a 20% increase in electrical potential, allowing brushless motors to spin faster with lower heat generation per watt delivered. Luna packs are built with robust internal nickel-plated copper bus bars, precision laser-welded cell matrices, integrated cell balancing, and heavy-duty smart Battery Management Systems (BMS). This engineering guarantees massive continuous discharge current while maintaining cell longevity, thermal safety, and over-current protection.

We stock the renowned **Luna Cycle 72V Sur-Ron Battery Pack** (SKU: SR-LUN-0007):

- **What It Replaces**: Replaces the factory 60V/32Ah battery, elevating system potential to a true 72V nominal architecture. - **What It Changes About the Bike**: Eliminates low-voltage sag, dramatically increases top-end motor RPM headroom, extends aggressive riding range, and supports high-amperage aftermarket controllers (EBMX, KO, Nucular). - **Construction**: Housed in a heavy-duty stainless steel or high-impact composite shell with integrated rubber edge dampeners, heavy-gauge discharge leads, and an onboard digital charge indicator.

A 72V battery is the core foundation for serious high-power electric bike builds:

- **Riders Running Aftermarket Controllers**: If you have upgraded to an EBMX X-9000, KO Beast, or Nucular controller, a 72V battery is the key that unlocks their true 10kW to 15kW+ potential. - **High-Speed Commuters & Track Riders**: Higher voltage increases top-end speed cleanly through pure back-EMF headroom rather than relying excessively on field weakening, keeping motor temperatures cooler. - **Hill Climbers & Heavy Riders**: Delivers consistent torque without the sudden voltage drop that causes stock 60V batteries to power-throttle under sustained heavy loads. - **Important Note**: A 72V battery **cannot** be used with a stock Sur-Ron 60V controller. It must be paired with an aftermarket controller programmed for 72V nominal (84V maximum fully charged).

High-voltage lithium batteries require strict adherence to charging and maintenance protocols:

1. **Dedicated 72V Charger**: Always charge using a dedicated 72V (84V peak cut-off) lithium smart charger. Never connect a 60V stock charger to a 72V pack. 2. **Storage Guidelines**: For prolonged storage (over 2 weeks), store the battery in a climate-controlled environment at approximately 50% to 60% state of charge (around 74V–76V). 3. **Tray Fitment**: Ensure the battery compartment is clean and free of stones before sliding the pack in, and secure the top strap or lid extension firmly to prevent pack movement during jumps.