$371.35

$371.35 $171.35

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Cheterdoli High-Capacity 21700 Hailong 5-Pin E-Bike Battery Pack – 36V / 48V / 52V 20Ah (20,000mAh) with Built-In BMS & Charger (Fast US Domestic Warehouse Shipping)

Upgrade your electric mountain bike, commuter e-bike, or high-torque mid-drive build with the premium Cheterdoli 21700 Hailong 5-Pin Lithium-Ion Battery Pack. Engineered with high-density 21700 battery cell technology rather than standard 18650 cells, this 20Ah (20,000mAh) pack delivers greater energy storage, reduced thermal strain under heavy acceleration, and extended range performance.

Featuring an industry-standard 5-Pin Hailong discharge interface, this battery connects securely to high-current base plates to handle high amp draws from mid-drive and hub motors up to 1000W+. Fully UL and CE certified, every pack includes a built-in protective Battery Management System (BMS) for continuous safety and ships directly from our US warehouse for fast delivery without international customs delays.

⚠️ Voltage Selection & 5-Pin Compatibility Notice

IMPORTANT SELECTION & INTERFACE GUIDE:

5-Pin Discharge Interface: Please verify that your current Hailong cradle or motor wiring uses a 5-pin discharge terminal connection before ordering.

Motor Power Output: Engineered for high-draw mid-drive motor systems (Bafang BBS02, BBSHD) and hub motor setups rated from 250W up to 1000W+.

Fast US Warehouse Shipping: Ships directly from domestic US logistics hubs for quick ground transit times.

🚀 Key High-Performance Features

Advanced 21700 High-Density Cells: Utilizes larger 21700 lithium-ion cells for improved energy capacity, lower internal resistance, and longer battery lifecycle compared to standard 18650 packs.
Heavy-Duty 5-Pin Hailong Interface: Built with a reinforced 5-pin connection block for lower resistance, reliable current transfer, and minimal power drop under heavy motor loads.
Integrated Smart BMS Protection: Protects cells against over-charging, deep discharge, over-current spikes, short circuits, and thermal runaway.
UL & CE Safety Certified: Thoroughly tested and certified to international safety standards for lithium energy storage systems.
Key-Locking Down-Tube Cradle: Features a lockable mounting bracket that fastens directly to standard frame water bottle bosses, offering easy removal for charging.

📊 Technical Specifications Matrix

Specification Parameter	Cheterdoli 21700 Hailong Battery Specifications
Brand / Manufacturer	Cheterdoli
Cell Architecture	High-Capacity 21700 Lithium-Ion Cells
Chassis Profile	5-Pin Hailong Down-Tube Case
Voltage Options	36V / 48V / 52V DC
Nominal Capacity	20Ah / 20,000mAh Full Capacity
Interface Port	5-Pin Discharge Terminal Base
Protection System	Integrated Smart BMS
Safety Certifications	UL & CE Certified
Shipping Fulfillment	Dispatched from US Warehouse
Applications	High-Power E-Bikes, Bafang Mid-Drives, Hub Motor Conversions

⚙️ Installation & Operation Guide

Mount Cradle Base: Bolt the 5-pin Hailong mounting cradle onto your bicycle frame's down-tube bottle cage bosses using stainless hardware.
Connect Controller Leads: Connect your motor controller's main positive (+) and negative (-) power leads to the base plate's wiring terminal.
Lock & Power Up: Align the 21700 battery pack with the slide tracks, push down until fully engaged into the 5-pin terminal block, turn the key to lock, and power on your system.

📦 Package Contents

1 x Cheterdoli 21700 Hailong Lithium-Ion Battery Pack (Selected Voltage & 20Ah Capacity)
1 x 5-Pin Quick-Release Mounting Base Cradle with Power Leads
2 x Battery Security Keys
1 x Smart CC/CV Lithium Battery Charger

Power your e-bike with high-density 21700 lithium energy shipped directly from the US. Select your voltage option below, click Add to Cart, and order today!

🏷️ Copy & Paste Shopify Tags

Specification：

* Brand: Aleaivy

* Battery Cell Composition: Lithium Ion A+++++ cell

* Voltage: 36 Volt /48 Volt /52Volt

* Capacity (amp hours): 20Ah

* Power:0W-2000W

* OUR HOLDER Plug:5-PIN

*Energy:

*BMS: 30A(36V/48V/52VBattery)

*Charge Temperature Range: -20°C-55°C/-4~131 ℉

*Chemical Composition: Lithium Iron Phosphate (LiFePO4)

*Discharge Temperature: -20~ 65°C/-4~149 ℉

*Maximum continuous discharge:

30A(36V/48V52V 10Ah Battery)/40A(36V/48V52V 15Ah 20Ah Battery)

*Type: Lithium Battery

* Peak Discharge Current :75A(30A BMS) 120A(40A BMS)

* Continuous Discharge Current :

30A(36V/48V/52V 10Ah Battery)/40A(36V/48V/52V 15Ah 20Ah Battery)

* Fit ebike: For 36V/48V 200W-2000W ebike Electric Bike

* Long life 1500+ deeply cycles,Quality Grade A+++++ cell, Riding time longer than ordinary batteries.

* Built-in BMS with short circuit , over-current , over-heat , over-charge , over-discharge protection.

About the Battery Lights

Press the“" button the lights will turn on.

Lights-1 Red 3 Green---100%

Lights-1 Red 2 Green---75%

Lights-1 Red 1 Green---50%

Lights-1 Red 0 Green---25%(you need to charge the battery at this time)

Package List:

* 1 x 36V/48V/52V 20Ah Hailong Battery

* 1 x Battery Fix Plate /Frame mount with Discharging Line

* 1 x 42V 2A /54.6V 2A US Charger

* 1 x 30Amp/40Amp BMS

* 2 x Keys

* 1 x Male XT60 Connector

* 1 x Female XT60 Connector

* 3 x Screws(One spare)

Charging note: Please connect the charger to the power supply first, and then connect the charger to the battery

Made with care

Great value

Elegant design

Quality materials

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.

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.