EVFREAKS Race 81V 50Ah Battery for Sur-Ron Light Bee
Built for extreme performance, the EVFREAKS 81V 50Ah Race Battery delivers up to 60kW peak and 25kW continuous output – giving you all the torque and acceleration needed for serious off-road riding and competition-level racing. With a 550A peak discharge, this battery is engineered for riders who demand maximum power and responsiveness from their setup.
Every unit is hand-built in Germany using Grade AA+ 21700 cells, copper-welded (no nickel), and assembled with premium materials to ensure safe, reliable, and consistent power delivery under the most demanding conditions. Housed in a 1.5mm stainless steel IP65-rated case, and equipped with an active 650A BMS, AWG6 silicone cabling, and QS8 anti-spark connectors, this pack is designed for riders who don’t compromise.
Custom made to order – 2 to 3 weeks production time.
Technical Specifications:
 
| Specification | Detail | 
| Voltage | 81V | 
| Capacity | 50Ah (3855 Wh) | 
| Peak Power | 40–60kW discharge | 
| Weight | 18 kg | 
| Protection Rating | IP65 | 
| Enclosure | 1.5mm stainless steel | 
| Battery Management System | 650A rated | 
| Bluetooth Interface | App (Android & iOS) | 
| Warranty Coverage | 1 year | 
| Shipping Availability | UK & EU stock | 
Included with Purchase:
- 
Discharge phase cable replacement harness (6AWG with QS8 connector) 
- 
125A high-current upgraded breaker 
- 
Lid extension hardware (required if not using EVF seat extenders – battery is 25mm taller than stock) 
- 
Air wedge to prevent battery movement 
- 
Full remote support from an EVFREAKS engineer for installation & programming 
PLEASE NOTE:
- 
For off-road/race use only – not road legal 
- 
Charger not included – optional adjustable chargers (0–15A / 0–40A) available 
- 
DIY installations are at your own risk 
- 
Always charge in a dry, ventilated, and supervised location 
- 
Professional installation is strongly recommended 
Why EVFREAKS?
At EVFREAKS, we don’t rely on mass-produced components or Chinese imports. Every battery is hand-built in Germany using only AA+ grade cells and premium materials to ensure unmatched performance, safety, and longevity. Since 2021, our builds have proven themselves in racing conditions – where consistency and reliability matter most. We're not just selling batteries; we're engineering purpose-built power systems that outperform anything else on the market. No compromises.