Black AKJA 72V-20AH lithium-ion battery shown with a black AC power adapter and a black plug, on a white background with text overlays.

72V 20‑50AH 18650 Battery Pack 40AH BMS Protection

72V20AH
$581.62
Sale price  $581.62 Regular price  $281.62
Skip to product information
Black AKJA 72V-20AH lithium-ion battery shown with a black AC power adapter and a black plug, on a white background with text overlays.

72V 20‑50AH 18650 Battery Pack 40AH BMS Protection

$581.62
Sale price  $581.62 Regular price  $281.62
Shipping calculated at checkout.
Color

AKJA High-Power 72V 21700 Lithium-Ion Battery Series –

Extended Capacity Options (20Ah, 30Ah, 40Ah & 50Ah) Engineered for 500W to 3000W Electric Motorcycles, Scooters & Fat Tire E-Bikes (Integrated 40A/45A Smart BMS, Peak 84V Output & Complimentary Universal 110V–220V Charger Included)

Unleash smooth, high-torque acceleration and extended driving range with the AKJA 72V High-Power 21700 Lithium Battery Series. Built using premium high-density 21700 cylindrical lithium-ion cells, this battery pack offers superior energy density, low internal resistance, and enhanced thermal endurance over traditional 18650 configurations.

Formulated to handle continuous high-amperage current for 500W to 3000W motor systems, the AKJA 72V series maintains steady voltage retention under heavy load without thermal cutoffs. Housed in a compact enclosure ($265 \times 180 \times 150\text{ mm}$) weighing between $4\text{ and }9\text{ kg}$, each pack is governed by an integrated Smart BMS and comes complete with a complimentary universal charger set.

⚠️ System Compatibility, Plug & Charger Selection Notice

IMPORTANT SELECTION & CHARGING GUIDELINES:

  • Nominal 72V DC Architecture: Charges to an 84V Maximum Peak Cut-Off with a 35V Discharge Cut-Off. Ensure your motor controller operates within standard 72V DC range.

  • Motor Power Compatibility: Safely feeds high-demand mid-drive and hub motor controllers rated from 500W up to 3000W.

  • Current Output Ratings: Rated for 45A discharge, 30A maximum continuous output, and a 60A instantaneous peak burst.

  • Complimentary Charger & Plug Customization: Ships by default with a standard 220V EU plug charger. If you require a US 110V AC plug or custom discharge connectors (XT60, XT90, Anderson), please specify your preference in the order notes at checkout!

🚀 Key High-Performance Features

  • Advanced 21700 Cell Architecture: High-density 21700 lithium cell matrix delivers long cycle life and minimal voltage drop under acceleration.

  • Supports Motors Up to 3000W: Handles steep inclines, heavy loads, and quick acceleration bursts without triggering protection trips.

  • Integrated Smart BMS Protection: Protects cells against overcharging, deep discharge, over-current spikes, thermal limits, and short circuits.

  • Compact Physical Footprint: Measuring $265 \times 180 \times 150\text{ mm}$, this geometry fits easily into cargo boxes, frame compartments, or under-seat bays.

  • Included Universal Fast Charger Set: Every battery ships with a matching CC/CV smart charger featuring automatic full-charge shut-off.

📊 Technical Specifications Matrix

Specification Parameter AKJA 72V Battery Series Specifications
Brand Name AKJA
Cell Type / Chemistry High-Density 21700 Lithium-Ion (Li-Ion)
Nominal System Voltage 72V DC
Peak Charge Voltage 84V DC
Discharge Cut-Off Voltage 35V DC
Capacity Options 20Ah, 30Ah, 40Ah, 50Ah
Continuous Discharge Current 30A Continuous / 45A Rated
Peak Instantaneous Burst 60A Maximum Burst
Motor Wattage Support 500W to 3000W Motors
Physical Dimensions ($L \times W \times H$) $265 \times 180 \times 150\text{ mm}$
Weight Range Approx. 4.0 kg – 9.0 kg (Depends on capacity)
Operating Charge Temp $0^\circ\text{C}$ to $55^\circ\text{C}$

 

📋 Ideal Applications

The AKJA 72V 21700 Lithium Series is engineered for:

  • 500W to 3000W Electric Motorcycles, Scooters, and City Mopeds

  • Fat Tire Off-Road E-Bikes and High-Speed Commuter Hybrids

  • Commercial Delivery Trikes, Cargo Bicycles & Marine Trolling Motors

📦 Package Contents

  • 1 x AKJA 72V 21700 Lithium-Ion Battery Pack (Selected Ah Capacity)

  • 1 x Complimentary Smart CC/CV Battery Charger (EU default; US 110V option available)

  • 1 x Power Discharge Connection Harness

Power your motorcycle or custom e-bike build with high-capacity 72V 21700 power. Select your capacity and charger options above, click Add to Cart, and order today!

Made with care

Great value

Elegant design

Quality materials

Details

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

Shipping & Returns

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.

Shop The Full Collection

1000°C High-Temperature Explosionproof E-Bike Battery Bag

1000°C High-Temperature Explosionproof E-Bike Battery Bag

1000°C High-Temperature Explosionproof E-Bike Battery Bag

$16.32
Sale price  $16.32 Regular price  $16.32
1000°C High-Temperature Explosionproof E-Bike Battery Bag i

1000°C High-Temperature Explosionproof E-Bike Battery Bag i

1000°C High-Temperature Explosionproof E-Bike Battery Bag i

$42.88
Sale price  $42.88 Regular price  $12.88
100V 96v 72v 84v High-Amp Variable Voltage Power Station

100V 96v 72v 84v High-Amp Variable Voltage Power Station

100V 96v 72v 84v High-Amp Variable Voltage Power Station

$429.91
Sale price  $429.91 Regular price  $229.91
105V 50Ah High-Voltage Sur-Ron Ultra Bee E-Moto Battery Upgrade

105V 50Ah High-Voltage Sur-Ron Ultra Bee E-Moto Battery Upgrade

105V 50Ah High-Voltage Sur-Ron Ultra Bee E-Moto Battery Upgrade

$7,122.86
Sale price  $7,122.86 Regular price  $6,122.86