Nexbat 88V 55Ah Pro Battery: Surron Ultra Bee

Name: Nexbat 88V 55Ah Pro Battery: Surron Ultra Bee
Brand: Nexbat
SKU: NX-UB8855P
Price: 4045.00 USD
Availability: InStock

Vendor: Nexbat

Type: Battery

$4,045.00

Shipping calculated at checkout.

Available in stock (13)

Lead Time: Ships in 45 days

Engineered for riders demanding maximum top-end speed, higher acceleration, and sustained high-current delivery, the true stock-fit Nexbat 88V 55Ah Pro Battery is a high-voltage power upgrade available for the Surron Ultra Bee. Constructed with genuine Molicel P50B high-discharge cells, the 88V Pro configuration delivers dramatically increased peak current capability, superior thermal stability, and relentless pull under extreme load—while maintaining true factory-fit integration.

Fully compatible with modern high-power controller tuning, the Nexbat 88V Pro battery unlocks the most aggressive, responsive, and race-ready Ultra Bee riding experience in the Nexbat lineup.

Nexbat 88V Pro Surron Battery Features

Maximum 88V Performance Platform — Highest acceleration potential and strongest sustained pull available for Ultra Bee builds.

Molicel P50B High-Discharge Cells — Industry-leading current capability and thermal stability for extreme high-power demand.

Superior Sustained High-Load Output — Maintains consistent performance during climbs, sprinting, and prolonged aggressive riding.

High-Current Smart BMS System — Engineered for demanding controller tuning and reliable protection under extreme load.

Stable Voltage Under Extreme Conditions — Consistent response and output during maximum-performance riding scenarios.

True Ultra Bee Factory Fitment — Clean installation without oversized housings or external modifications.

Heavy-Duty High-Current Wiring — Supports extreme discharge safely and efficiently.

Optimized for Maximum-Power Controller Builds — Designed specifically for serious Ultra Bee performance setups.

Built for Max Top-End Speed and Race-Level Performance — The highest-voltage Nexbat Ultra Bee battery configuration available.

Nexbat 88V Pro Battery Specs
Model	UB8855P
Cells	Molicel P50B
Cell Configuration	24S11P
Energy (Watt Hours)	4840 Wh
Nominal Voltage	86.4V
Nominal Capacity	55Ah
Peak Output Current*	650A
Nominal Current (1C)	55A
Full Charge Peak Power	65.5 kW
Nominal Peak Power	56.2 kW
Max Charge	100.8V
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).
**Continuous output is dependent of cooling/airflow.

Compatibility

E-Moto: Surron Ultra Bee (all model years)

Controller: Requires aftermarket controller upgrade

EBMX X-9000

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

EBMX XUB-80 / Torp TM50 Pro / Sotion FW01 Pro

Charger: Requires 88V Surron Ultra Bee Battery Charger

Performance Difference vs. Stock

Stock Ultra Bee estimated peak discharge: ~180A*
Nexbat Peak Discharge: 650A
Result: ~3.6× the peak discharge capability

*Disclaimer: Stock Ultra Bee peak discharge values are estimates based on available data.

Samsung 50S vs. Molicel P50B

Nexbat 80V Pro Batteries for Surron Ultra Bee are true-fit performance upgrades are built with high-discharge Molicel P50B cells for riders seeking maximum performance and long-term upgrade potential. The key difference is overall current capability, sustained load performance, and riding intent.

88V Samsung 50S (Standard)	88V Molicel P50B (Pro)
Up to 275A peak output	Up to 650A peak output
Balanced power, efficiency, and ride time	Significantly higher current capability and peak acceleration
Smooth, predictable throttle response	Stronger sustained power under heavy load and aggressive riding
Reliable sustained output for everyday and trail riding	Superior thermal stability for demanding controller tuning
Ideal for riders prioritizing range, consistency, and long-term durability	Built for maximum-performance Ultra Bee builds
Best for balanced high-performance riding and extended real-world usability	Best for riders seeking the hardest acceleration, strongest pull, and highest overall performance

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.

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