We use quality products on all of our bikes.

All LEGIT parts are interchangeable from bike to bike — with the exception of the wheel package.

Our Power Lineup

72 VOLT SYSTEM:

Motor: Bafang 3000w

CONTROLLER: 60AMP 

BATTERY OPTIONS: 25ah+10ah frame batteries

BATTERY TYPE: Standard and all future packs are SunPower 50SE. The current Rocket ST batch is Samsung 25Ah (50GB) + 10Ah (50S). After that batch, every LEGIT bike ships SunPower 50SE.

Why SunPower 50SE

We compared cell platforms for our dual 25Ah + 10Ah packs the same way we compare motors — under real load. Here is how Samsung 50GB, Samsung 50S, and SunPower 50SE stack up on published continuous discharge.

Samsung INR21700-50G / 50GB — Energy-focused. Continuous discharge about 9.8A (2C); 14.7A only in a limited temperature window. Strong capacity cell, not built for hard continuous current.

Samsung INR21700-50S — High-rate. Continuous discharge 25A without temperature cutoff; 45A only with 80°C surface temperature cut (Samsung datasheet).

SunPower INR21700-50SE — High-rate. SunPower publishes about 30A continuous (~6C) for the 5000mAh 50SE. That is the discharge headroom we needed for 72V hard-throttle riding.

We chose SunPower 50SE over Samsung 50GB for a clear discharge upgrade, and over Samsung 50S for additional continuous-current margin. We build these packs with copper bus bars for lower resistance and cleaner current delivery under load.

Manufacturers test cycle life at very different currents. A cell cycled at 1C will always look longer-lived on paper than one cycled at 25A — so published cycle counts aren't identical tests.

Under those published conditions: Samsung 50GB is about 80% after 500 mild cycles; Samsung 50S is about 60% after 250 hard 25A cycles; SunPower 50SE is in the long-cycle / ~500–600 class. We chose 50SE for discharge headroom, then finish the pack with copper bus bars.