Ebike Battery Guide 2025 Voltage and Capacity Explained

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The ebike battery is the core component of any electric bicycle. It determines your range, speed potential, and overall ride experience. In this guide, we’ll help you understand what to look for when comparing e-bike batteries for both performance and B2B procurement in 2025.

What is an Ebike Battery?

An ebike battery is a rechargeable lithium-ion pack that powers the motor. It consists of individual cells (usually 18650/21700), a battery management system (BMS), and casing. The two most important specs to consider are voltage (V) and capacity (Ah).

Voltage: 36V vs 48V vs 72V

  • 36V: Suitable for flat urban riding, budget models
  • 48V: Standard for most eMTBs, folding bikes, all-terrain models
  • 72V: High-performance ebikes, long-range, powerful dual motors

Capacity: What Does Ah Mean?

Capacity (measured in amp-hours or Ah) determines how far you can go per charge. Higher Ah = longer range.

  • 10Ah–13Ah: Ideal for short trips, urban commuting
  • 15Ah–20Ah: Balanced range and weight for most riders
  • 30Ah: For long-distance or heavy-duty use (hunting, off-road)

Top POLEEJIEK Models by Battery Configuration

BLJ-2625 – 30Ah Dual Motor Beast

With a massive 48V 30Ah battery and dual 1000W motors, this fat tire bike is made for long-range power. Ideal for rugged riders and B2B rental operators.

See BLJ-2625 →
BLJ-2625 30Ah Ebike

BLJ-2027 – Folding Bike with Dual 26Ah Batteries

This compact folding ebike is equipped with dual batteries (front tube + seat post), totaling 26Ah. Perfect for delivery use and long-distance urban riders.

Explore BLJ-2027 →
BLJ-2027 Folding Ebike Battery

BLJ-F4 – Retro Monster with 72V Power

The 72V high-voltage system on the BLJ-F4 enables ultra-fast 30 mph speeds with 3000W of dual motor power. Great for performance-focused use or rural terrain.

Check BLJ-F4 →
BLJ-F4 72V Retro Ebike

Removable vs Built-in Batteries

  • Removable: Easier to charge, replace, or upgrade
  • Built-in: Better waterproofing, aesthetics, lower theft risk

OEM Battery Customization

POLEEJIEK offers B2B partners flexible battery specs for OEM and white-label ebikes. Choose your voltage, capacity, cell brand, or battery location (downtube, rear rack, internal).

Request Custom Battery Ebike Pricing

Looking to supply high-voltage ebikes or long-range bikes to your customers? POLEEJIEK supports OEM battery specs with CE/RoHS certification.

Get Your Custom Quote →

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