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Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V / 81V Battery Upgrade for Sur-Ron Light Bee
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
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 / 81V Battery Upgrade for Sur-Ron Light Bee
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Nexbat 72V 50Ah, 81V 45Ah Battery Upgrades: Sur-Ron Light Bee X
Darwin EV Sur-Ron Light Bee Champagne Build: Nexbat 72V 50Ah Battery, Torp TC1000 Controller, TM25 Motor, EXT Suspension

Nexbat 81V 45Ah Battery: Surron Light Bee (Samsung 50S)

Vendor: Nexbat

Type: Battery

$1,995.00
$1,995.00
Shipping calculated at checkout.

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The Nexbat 81V 45Ah Battery (Samsung 50S) is a high-voltage, true stock-fit performance upgrade for the Surron Light Bee, delivering stronger acceleration, higher top-end speed potential, and stable power in a clean factory-style installation. Built with genuine Samsung 50S lithium cells and an integrated smart BMS, this configuration provides dependable high-voltage output, smooth discharge, and reliable everyday performance for riders stepping into 81V power—without oversized cases or extended battery covers.

Designed for seamless compatibility with modern phase-based controllers, this battery offers a balanced entry into high-voltage Surron LBX performance.

Key Features

  • Samsung 50S High-Performance Cells — Proven reliability, efficiency, and consistent output
  • High-Voltage 81V Performance — Stronger acceleration and increased top-speed potential vs 72V systems
  • Integrated Smart BMS Protection — Safe, balanced discharge and dependable operation
  • True Stock Fitment — No extended cover or oversized enclosure required
  • Stable Voltage Through Full Discharge — Predictable throttle response and smooth power delivery
  • Heavy-Duty Power Leads — Built to handle increased current from performance controllers
  • Compatible with Modern Phase-Based Controllers — EBMX X-9000 and Torp TC1000
  • Balanced Power and Efficiency — Ideal for riders entering high-voltage 81V performance

Specifications
Model LB8145S
Cells Samsung 50S
Cell Configuration 22S9P
Nominal Voltage 79.2V
Nominal Capacity 45Ah
Peak Output Current* 225A
Nominal Current (1C) 45A
Full Charge Peak Power 20.8 kW
Nominal Peak Power 17.8 kW
Max Charge 92.4V
Power Leads 6 AWG
Waterproof 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).

Compatibility

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

Controller: Requires aftermarket controller upgrade

EBMX X-9000 / Torp TC1000

Motor: Compatible with stock Surron motor and aftermarket motors made for Light Bee

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

Charger: Requires Nexbat 81V Surron LBX Fast Charger

Samsung 50S vs. Molicel P50B

Both Nexbat 81V batteries are true stock-fit upgrades for the Surron Light Bee, featuring high-quality cells, smart BMS protection, and full compatibility with modern performance controllers. The key difference is overall power and riding intent.

Samsung 50S (Standard) Molicel P50B (Pro)
Up to 225A peak output Up to 585A peak output
Smooth, reliable everyday performance Much stronger acceleration and sustained power
Balanced power and range Built for high-power controllers, motors, and aggressive riding
Ideal for trail riding and moderate builds Most powerful 81V Nexbat option
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.

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Shipping Policy: Shipping and processing times can vary, depending on the
product. Most orders ship within 1 day and take about 1-4 days in
transit when shipped within the continental United States. Cut-off time:
4:00pm PT (7:00pm ET) Monday – Saturday.

Lead Times: Some products have lead times to allow for processing and/or clearance, in addition to transit times. It is possible to receive your items sooner. Here are our official lead times for the following product types:

  • EWatt Batteries, Lids, Chargers: 10 days
  • Forks, Shocks: 5 days
  • Custom Wheel Sets: 21 days

Signature Required: Shipping of high-value items requires a signature from an adult (18+). Without a signed delivery receipt, the driver will be unable to complete the delivery.

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Return Policy: We accept returns on new, unused batteries in original packaging. All battery sales outside the lower 48 states (US) are final and cannot be refunded or returned. 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 Fee: There is a 25% restocking fee for any battery returns and any battery order cancellations made after 72 hours of purchase.