VTB 72V 50Ah EVO GT Battery Upgrade for Sur-Ron Light Bee (Collective)

Unlock more power, range, and charging capability from your Sur-Ron Light Bee with the VTB 72V 50Ah EVO GT Battery from Emoto Supply.

Designed as a high-performance battery upgrade for the Sur-Ron Light Bee, the EVO GT combines Samsung 50S 21700 cells, high-current BMS technology, Bluetooth monitoring, an integrated color LCD, and support for ultra-fast charging.

With up to 32kW peak power capability, a 50Ah capacity, and a laboratory-tested range of up to 165 km, this battery is built for riders looking to take their upgraded Light Bee well beyond stock performance.

Key Features

• 72V 50Ah high-performance battery
• Samsung 50S Grade A 21700 cells
• Up to 32kW peak power
• 250A standard discharge capability
• High-current BMS with 550A peak capability for up to 10 seconds
• Bluetooth BMS monitoring
• Integrated VTB color LCD
• Up to 50A / 1C fast charging
• Built-in XT90 fast-charging port
• IP67 water-resistant construction
• Upgraded high-current RAS 6808 connectors
• Spark-prevention power button
• Fits the original Sur-Ron Light Bee battery compartment
• Approximately 20mm battery height increase

Battery Specifications

Model: VTB7250-9C-QF
Voltage: 72V
Capacity: 50Ah
Cell Type: Grade A Samsung 50S 21700
Standard Power: 19.2kW / 250A
Peak Power: Up to 32kW
BMS Peak Capability: Up to 550A for 10 seconds, configured to a 400A peak for this battery
Maximum Charging Current: 50A / 1C
Quick Charging Time: Approximately 1 hour with compatible VTB fast charger
Water Resistance: IP67
Weight: 18.2 kg / approximately 40.1 lb
Dimensions: 154 × 138 × 385 mm
Height Increase: Approximately 20mm above the original battery position

Extended Riding Range

The 50Ah capacity provides significantly more stored energy for riders who want additional range without sacrificing high-performance discharge capability.

Laboratory-Tested Range: Up to 165 km / approximately 103 miles at an average speed of 25 km/h (15.5 mph).

Actual riding range will vary based on speed, rider weight, terrain, temperature, tire pressure, controller settings, motor configuration, riding style, and other conditions.

Samsung 50S 21700 Cells

The EVO GT uses Grade A Samsung 50S 21700 cells selected for high-current performance and capacity.

The battery pack is designed to maintain extremely tight cell voltage consistency, with a stated voltage difference of less than 0.01V after 10,000Ah of cycling.

Expected Cell Lifespan: Minimum 70% capacity after 3 years under specified operating conditions.

High-Current BMS

A custom BMS utilizing 22 HYG017N10 MOSFETs is engineered to handle the demands of high-performance e-moto applications.

The system supports high-current pulses while minimizing heat generation, with stated heat generation below 18W during a 250A discharge.

The BMS provides protection against multiple charging and discharging conditions while allowing riders to monitor battery status in real time.

Bluetooth BMS Monitoring

Connect to the battery through Bluetooth to monitor important operating information directly from a compatible device.

The BMS provides real-time battery condition information to help riders monitor performance and identify potential issues.

VTB Interactive Color LCD

An integrated color display provides real-time battery information directly on the pack, including:

• State of Charge (SOC)
• Voltage
• Current
• Power
• Temperature
• BMS feedback

The display can also help diagnose battery shutdowns and operating conditions.

Accidental-touch protection activates when current exceeds 0A to help prevent the battery from being unintentionally switched off while operating.

Ultra-Fast Charging

The integrated low-profile XT90 charging port allows the battery to remain installed in the bike while charging.

With a compatible VTB fast charger, the battery supports charging currents of up to 50A continuously, allowing approximately 1-hour charging under supported conditions.

A protective rubber cap provides additional coverage for the charging port when riding.

High-Current Connectors

Two upgraded RAS 6808 connectors replace the standard Sur-Ron REB6808-style 200A connector.

Connector Rating:

• 240A continuous
• 480A peak

These upgraded connectors are designed to better support high-current performance applications.

Reduced Voltage Sag

The EVO GT is engineered for strong voltage stability under heavy loads.

Stated Voltage Drop: Approximately 7V at 250A discharge.

Reduced voltage sag helps maintain stronger performance when demanding high current from the battery.

CNC Copper-Nickel-Chrome Tabs

Traditional nickel battery tabs are replaced with CNC-machined Copper-Nickel-Chrome tabs.

The upgraded construction is designed to improve discharge efficiency by reducing tab resistance to approximately 0.1mΩ.

Spark-Prevention Design

Instead of relying on the factory-style breaker or air switch, the EVO GT incorporates a press-and-hold power button designed to reduce electrical arcing and sparking during battery activation.

IP67 Construction

The battery is rated IP67, with discharge cells sealed using epoxy resin to provide increased protection against water and environmental exposure during outdoor riding.

Sur-Ron Light Bee Fitment

Designed specifically as a battery upgrade for the Sur-Ron Light Bee.

The battery fits within the original battery compartment while increasing the installed battery height by approximately 2 cm / 0.8 in.

Vendor

Emoto Supply

Important

High-performance batteries can substantially increase the electrical output of your e-moto. Your controller, motor, wiring, connectors, drivetrain, and other electrical components must be capable of handling the battery’s voltage and current output.

Actual performance, range, charging time, and power output depend on the complete vehicle configuration and riding conditions. Verify compatibility with your controller, motor, charger, and electrical system before installation.