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Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Compare Sur-Ron Battery (stock) vs Nexbat Battery upgrade for Sur-Ron Light Bee
Darwin EV Sur-Ron Light Bee Champagne Build: Nexbat 72V 50Ah Battery, Torp TC1000 Controller, TM25 Motor, EXT Suspension
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Compare Sur-Ron Battery (stock) vs Nexbat Battery upgrade for Sur-Ron Light Bee
Darwin EV Sur-Ron Light Bee Champagne Build: Nexbat 72V 50Ah Battery, Torp TC1000 Controller, TM25 Motor, EXT Suspension

Nexbat 81V 45Ah Battery: Sur-Ron Light Bee

Vendor: Nexbat

Type: Battery

$2,800.00
$2,800.00
Shipping calculated at checkout.

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Cell Type: Samsung 50S

The Nexbat 81V 45Ah Battery is a true stock-fit, high-performance power upgrade for the Sur-Ron Light Bee electric dirt bike. Built for clean installation and maximum output — without oversized covers or extended cases. Nexbat batteries are designed for compatibility with modern phase-based controllers and sustained high-current operation.

Nexbat 81V Sur-Ron Battery Features

  • True Stock Fitment — no extended cover required
  • Peak Output: 350A+ (Samsung 50S) / 450A+ (Molicel P50B)
  • 600A Integrated Smart BMS
  • High Continuous Output Capability
  • Stable Voltage Across Full Discharge
  • Heavy-Duty 6 AWG Power Leads
  • Full Color Digital Display
  • Compatible with Modern Phase-Based Controllers:
    • Torp TC1000 / EBMX X-9000 / Nucular P24F
Available Configurations:

Standard Pack

  • Samsung 50S cells
  • Peak output: 350A+
  • Optimized for balanced power and range

Pro Pack

  • Molicel P50B cells
  • Peak output: 450A+
  • Optimized for maximum power and thermal stability under extreme load
True Stock Fitment
Fits the stock Sur-Ron Light Bee battery compartment. No tall packs, no cover extensions — proper fitment and clean install.
High-Performance Design
Built for sustained high current and aggressive riding. Maintains consistent voltage and output across the full discharge.
Controller Compatibility
Fully compatible with modern phase-based controllers, including Torp TC1000, EBMX X-9000, and Nucular P24F.

Nexbat 81V 45Ah Battery Specs

Nexbat 81V 45Ah Nexbat 81V 45Ah Pro
Model LB8145S LB8145M
Cells Samsung 50S Molicel P50B
Cell Configuration 22S9P 22S9P
Nominal Voltage 81V 81V
Nominal Capacity 45Ah 45Ah
Peak Output Current* 350A+ 450A+
Nominal Peak Power 28.4 kW 36.5 kW
Full Charge Peak Power 33.1 kW 42.5 kW
BMS Rating 600A Smart BMS 600A Smart BMS
Continuous Output** 250A+ 250A+
Max Charge 94.5V 94.5V
Power Leads 6 AWG 6 AWG
Waterproof IP67 Rating IP67 Rating
*Peak current ratings shown are conservative estimates based on controlled testing. Actual packs are capable of achieving higher peak current under optimal conditions (controller tuning, wiring, battery temperature, and SOC).
**Continuous output is dependent of cooling/airflow.

Compatibility

E-Moto: Sur-Ron Light Bee X/S, Segway X160/X260 (all model years)

Controller: Requires aftermarket controller upgrade

Torp TC1000 / EBMX X-9000 / Nucular P24F

Motor: Compatible with stock Sur-Ron motor and aftermarket motors made for Light Bee

Torp TM25 / TM40 / EBMX XLB-60 Race / XLB-60 Core / Sotion FW01

Charger: Requires 81V Fast Sur-Ron Battery Charger (add-on option available)

Battery Disclaimer ▾

Darwin EV Terms and Conditions

Liability Waiver: By purchasing this product, you accept full responsibility for any damage or harmful consequences that may result from the product. You understand that you waive the right to sue and seek compensation for damages that may arise from the use of the product in question, regardless of whether the product has been used properly or misused. You also acknowledge that all products created, manufactured, or distributed by Darwin EV, LLC are provided on the condition that its users accept full responsibility for any ill effects the product may cause.

Product Servicing: Darwin EV, LLC products are built to last. We stand behind the quality of our batteries and will address any manufacturer-related issues. Upon purchase, the customer agrees to take all safety precautions when operating and caring for their product, including maintenance and proper storage of lithium-ion battery packs.

Battery Maintenance: Store in a dry place. When not riding for long periods, keep battery charge between 50% and 80%. For best results, always charge after riding — do not store a depleted battery.

Handling of Lithium-ion Battery Cells – Risks and Precautions: Misusing or mishandling lithium-ion batteries can pose a serious risk of personal injury, property damage, or death. Batteries may explode, burn, or cause a fire if misused or mishandled. Only use with proper circuitry in a protected battery pack. Only use within manufacturers’ listed specifications.

Restocking Fee: There is a 20% restocking fee for any battery order cancellation.

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Shipping Policy: Shipping and processing times can vary depending on the product. Most products ship within 0–3 days and take about 2–4 days in transit when shipped within the continental United States. Cut-off time: 4:00pm PST (7:00pm ET), Monday–Saturday.

Battery Lead Time: It is possible to receive your battery sooner. However, our official lead time on batteries is 20 days to allow for transit time and customs clearance.

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Return Policy: We accept returns on new, unused products in original packaging. Returns must be initiated within 30 days from the date of purchase. Eligible returns must be made by mail. Upon approved request, a return label will be made available for download to print, free of charge. Refund processing may take up to 7 days. Returns are subject to banking processing fees.

Restocking Fees: A 20% restocking fee is applied to battery order cancellations or returns.