72V 20.8-35AH Lithium Triangle ebike Battery for 2000 3000W 5000w motor electric bike 60A 80A BMS

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1, E-bike battery cell: Made of 2600mAh, 2900mAh, 3200mAh, Samsung 3200mAh and Samsung 35E Li-on battery cell;
2, E-bike battery life: Can charge and discharge over 1000 times; Samsung battery cell can charge over 1500 times
3, Size: Please refer to the E-bike battery size chart.
4, Motor work with: 20.8Ah battery can work with 72V1500w-2000Wmotor; 26.1AH and 32Ah Battery can work with 3000W motor. 72V32Ah and 72V35Ah battery with 80A BMS can work with 3000w and 5000w motor.
5, Triangle Style. A triangle battery bag come with! Easy to install on the frame of the bike.
6, Connector: we can offer XT-60, Anderson, Bullet shape or XT-90 connector, please let us know what connector you need after your purchase. if you don't specify it, we normally send you the XT-90 connector for this battery.

Type of Battery Cell and Capacity(Amperage)
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Frequently Bought Together

About This Item

Voltage: 72V ;         
Battery Capacity: 20.8Ah, 26.1Ah, 32Ah   ;        
Battery Type:  Lithium Ion (Li-Ion), Triange  ;        
Charging Time:  4-7 hours ;        
Item Condition: New

Components Included: 
Battery and 5A Charger

Description

FAQs

Shipment & Delivery

Reviews

72V Triangle E-Bike Battery Pack (2000W–5000W Motors)

Product Overview

The 72V Triangle E-Bike Battery Pack is a high-capacity, heavy-duty lithium-ion power system designed specifically to fit inside standard bicycle frame triangles for high-power e-bike conversion kits and custom electric bicycle builds running 2000W, 3000W, and 5000W motors. Available in 20.8Ah, 26.1Ah, 32Ah, and 35Ah capacity options, this 72V series features cost-effective 2600mAh, 2900mAh, and 3200mAh 3C Li-ion cells as well as high-discharge 10C premium Samsung 3200mAh and Samsung 35E cells. Equipped with an industrial-grade 60A or 80A continuous BMS (supporting peak instantaneous discharge up to 120A or 160A), it delivers high torque without voltage sag, stable energy output, and an extended lifespan of up to 1,500+ complete charge cycles.

Custom Sizing Fabrication: Customized size and shape requests are welcome to fit unique frame triangles or specialized battery bag dimensions.

Technical Specifications

Feature Technical Parameter
Nominal Voltage 72V System
Compatible Motor Output 2000W | 3000W | 5000W Motors
Form Factor / Style Bicycle Frame Triangle Mount
Warranty & Support 1-Year Quality Warranty + Lifetime Technical Support
Custom Size Fabrication Customized size order is welcome
Battery Cell Options

• Standard 18650 Li-ion 2600mAh Cell (3C Discharge)


• Standard 18650 Li-ion 2900mAh Cell (3C Discharge)


• Standard 18650 Li-ion 3200mAh Cell (3C Discharge)


• Samsung 3200mAh Cell (10C High Discharge)


• Samsung 35E Cell (10C High Discharge)

Nominal Capacity Options 20.8Ah | 26.1Ah | 32Ah | 35Ah
Cell Combinations 8x20 | 9x20 | 10x20
BMS Continuous Discharge Current 60A or 80A
BMS Max Instantaneous Current 120A or 160A
Internal Resistance 105 mΩ
Charging Cut-Off Voltage 84V
Discharge End-Off Voltage 65V
BMS Rated Charging Current 20A
Charging Method CC / CV (Constant Current / Constant Voltage)
Battery Life / Cycle Count

Standard Cells (2600/2900/3200mAh): >1,000 Complete Cycles


Samsung Cells (Samsung 3200 / 35E): >1,500 Complete Cycles

Operating Temperatures

Charge: 0°C to 50°C (32°F to 122°F)


Discharge: -20°C to 50°C (-4°F to 122°F)

Key Features & Performance Highlights

  • Optimized for 2000W–5000W High Power: Heavy-duty 60A/80A continuous BMS (up to 160A peak instantaneous discharge) engineered to supply clean, high-amperage current to power-hungry hub and mid-drive motor controllers without thermal throttling.

  • Centered Triangle Frame Mounting: Positions heavy battery weight low and centered in the bicycle frame triangle, preserving vehicle balance, handling stability, and cornering control.

  • Samsung & Standard Cell Choices: Select between economical 3C discharge cells (2600mAh/2900mAh/3200mAh) or premium 10C high-discharge Samsung 3200mAh / Samsung 35E cells offering up to 1,500+ cycle durability.

  • Custom Dimension Options: Accepts custom shape and dimension orders to ensure seamless fitment inside custom frame bags or specialized center-triangle frame geometries.

  • 84V Full Charge Cut-Off: Integrated CC/CV charge management protects cells against overcharging, short circuits, thermal spikes, and excessive current draws.

  • 1-Year Warranty & Lifetime Support: Backed by a full 1-year quality warranty and lifetime technical support.

Package Contents

  • 1x 72V Triangle E-Bike Battery Pack (Selected Capacity & Cell Option)

  • 1x Wiring Connectors

Frequently Asked Questions (FAQ)

Q: What size motor is compatible with this 72V triangle battery?

A: Powered by a 60A or 80A continuous BMS (up to 160A peak), this 72V triangle pack is designed for high-power electric bike motors rated for 2000W, 3000W, and 5000W.

Q: What is the full charge cut-off voltage?

A: The full charge cut-off voltage is 84V, using safe CC/CV (Constant Current / Constant Voltage) charging protocols. The discharge end-off voltage is 65V.

Q: What battery cell choices are available, and how long do they last?

A: You can choose standard 3C discharge cells (2600mAh, 2900mAh, 3200mAh) rated for over 1,000 cycles, or premium 10C high-discharge Samsung 3200mAh and Samsung 35E cells rated for over 1,500 cycles.

Q: Can I order a custom size triangle battery for my bike frame?

A: Yes, custom dimension orders are welcome. You can contact us with your inner frame triangle dimensions to build a pack customized to your setup.

 

 

72V 20.8Ah ebike battery size 

72v 20ah lithium battery

72V 26.1Ah ebike battery Size

72v triangle battery

72V 32Ah & 72v 35Ah ebike Battery Size

72v 30ah ebike battery



Frequently Asked Questions

Welcome to our FAQ page, where you can find answers to the most commonly asked 

questions about our company, products/services, policies, and more

1. General Questions

A. General Questions

What is your return policy?

We want you to be completely satisfied with your purchase, so we accept returns on all items within 14 days of the purchase date. To start a return, please visit our Returns page and follow the instructions.

How do I track my order?

Once your order has shipped, you will receive a tracking number via email. You can use this number to track your order on our website or on the carrier's website.

Can I cancel or modify my order?

We try to process orders as quickly as possible, but if you need to modify or cancel your order, please contact our customer service team as soon as possible. We'll do our best to accommodate your request.

How long is the delivery

Normally the delivery is from 3-15 business days. Different product's delivery is different. You can see how long you will receive the item on the product page and also the checkout page. And the delivery of some certain items for example the assembled stealth bomber ebike is longer because it is shipped by sea due to the heavy weight and bulky package, the delivery takes about 35-45 business days. 

B. Returns and Warranty

Returns Policy

If you are not completely satisfied with theebikemotorkit purchase for any reason, theebikemotorkit welcomes you to return new for a full refund to your original method of payment if returned within 14 days of purchase, in most cases. In order to complete the return, you must have a proof of purchase and contact us before your return. For return details, please check our refund and warranty policy.

warranty

We have 1-year standard warranty for all batteries and motors(Including the batteries and motor in the Ebike). For controller, LCD or TFT display, it is 6-months warranty if you provide us the video to show the problems. The warranty does not cover the easy wore-out parts (for example throttle, brake lever, tire, cable, headlight, bicycle seat). For details, please check our refund and warranty policy.
Normally we always like to provide the technical service and advice after your purchase as long as you provide us videos to show the problems. So after your purchase, if there is some problem, don't be hestitated to contact us. we can always give you some advise.

2. Products/Services Questions

A. Finding Products

Search for Products

Know exactly what you want? Or perhaps you're just searching for a ebike kit? Use our comprehensive Search box located in the upper right corner of our site to find the exact product you need, or browse through the collection under the catalogue colum. You can be as broad as "ebike kit", "ebike battery", "ebike" or as specific as "48V2000W electric bike kit."

How to select a perfect product

Don't know what ebike kit, battery or ebike you want to buy among the wide range of selection? First, do you have a budge? if you do, stay with a budge to select within the budge range. Second, know what's your reqest for an ebike, for example, the speed, power, and driving range;  3, if you have a bike and want to buy ebike kit to convert your bike to be electric bicycle. then you need to measure your bike's wheel size and dropout.
For more information to help, please read our blog "What you need to consider when to buy an Electric Bike Kit"

How do i know the ebike conversion kit can be installed on my bike or not

To check if your bike can be installed with our ebike kit or not, you need to measure two sizes: 1, the wheel size of your bike; 2, the dropout of your bike. with this two sizes to check the ebike kit can be installled on your bike or not. Regarding how to measure the wheel size and dropout, please check our blog How to measure the wheel size and dropout of A bike  

Product Information

After you have found the perfect product, you can read the features and specification on each product detail page. The information is located beneath the product details. All the available wheel size, power, and amperage are listed on the option column for you to choose.

Product Availability & Out of Stock Products

Theebikemotorkit carries hundreds of SKUs for ebike kits, batteries and ebikes. Occasionally, an item may be temporarily out of stock. You can check the stock availablitiy by selecting your location, for example, If you are in US, You can choose your location to be United States(it is on  the upper right corner box). And you can also send us emails to ask us the availabilities of certain SKU.

B. Technical services

How to install

Normally we list on our installation guide video on thee product page. And you can also go to the help videos under the blogs to check the installation guide vidoe.

Trouble Shooting

We always provide technical service after your purchase as long as you provide us the videos to show the problems. And for some normal trouble during your usage, you can check our trouble shooting blog to ge your answer too.

3. Account Questions

Account registration, sign in, password & linked accounts

Resetting Your Password

If you have forgotten your password, click the "Forgot password?" link on the Sign In screen. Enter your email address, and we will send you a link to reset your password.

Changing Your Login Email Address or Password

You can change your account email address and password on the Account Information page. All your email subscriptions and order confirmations will be sent to your new email address.

4. Contact Questions

Call us

+86-18588534856
Representatives are available: 
MON-FRI: 9am to 6pm BJT 
SAT-SUN: 10am to 5pm BJT

Chat with us

Representatives are available: MON-SUN: 9am - 6pm BJT

Shipment & Delivery

We normally ship it from China, US, UK or Germany warehouse by FEDEX, UPS, DPD, DHL, GLS, POST or other international express. 

1, Ship it from US, UK and Germany warehouse

When you can receive your order: Order Handling Time + Delivery Time. If we have stock in US, UK or Germany warehouse, we ship it from US warehouse to US buyers, from UK warehouse to UK buyers, from Germany warehouse to Europe Union buyers. The delivery normally takes about 1-5 business days. The shipping cost to these three areas (US, UK and Europe Union) is free. To the other countries, you can check the shipping cost at checkout. No import tax from Germany to Europe Union countries.

 Shipping from US, UK and Germany Warehouse
 Destination Order Handling Time(Business day) Delivery (Business Days)

Shipping Methods

Shipping Fee

Import
Tax

US, UK, Germany 1-2 1-5 DPD, UPS, DHL, Evri, GLS, Post or FEDEX etc., Free None
Norway, Switzerland and EU, please check EU
countries list below
1-2 3-5


DPD, UPS, DHL, Evri, GLS, Post or FEDEX, etc.,


Free None



EU countries list: Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden 


2, Ship it from China

When you can receive your order: Order Handling Time + Delivery Time. For the orders which ship from China, We need some days to prepare your order especially the stealth bomber ebike. The order handling time is about 2-7 business days. Please check the shipping fee, handling time, delivery and import tax details in the following tables.

 Ship from China to US, UK, Australia, Canada, Germany, EU, and some Asia countries, please check the EU and Asia countries lists below
 Package

Shipping

Fee

Order Handling Time (Business Day)

Delivery (Business Day)

Shipping Methods

Import 

Tax

small package

(1-7.9kgs)

Free 2-3 10-5 FEDEX, UPS, DHL, DPD, GLS, Post or Evri, etc.,

Yes, if you

are asked

to pay

8kgs<package

<80kgs

Free 2-4 10-15 or 30-35 By air or by sea from China to US, EU, UK, CA or AU,  by FEDEX, UPS, DHL, DPD, GLS, Post or Evri, etc., for delivery none

Stealth Bomber

Ebike & Front Wheel

Free 5-7 35-45 By sea from China to US, EU, UK, CA or AU,  by FEDEX, UPS, DHL, DPD, GLS, Post or Evri, etc., for delivery none
Battery Free 3-7 12-18 By air from China to US, EU, UK, CA or AU,  by FEDEX, UPS, DHL, DPD or Evri, etc., for delivery none

 

EU countries list: Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden

Some Asia countries list: Japan, Malaysia, Philippines, South Korea, Thailand, Vietnam


Ship from China to United Arab Emirates 
 Package

Shipping

Fee

Order Handling Time (Business Day)

Delivery (Business Day)

Shipping Methods

Import 

Tax

small package

(1-7.9kgs)

Free 2-3 10-15 Special airline from China to UAE

Yes, if you

are asked

to pay

8kgs<package

<40kgs

Calculated at checkout 2-4 10-15  Special airline from China to UAE

Yes, if you

are asked

to pay, normally no

Stealth Bomber

Ebike, Front Wheel & Electric Wheelchair attachment 

Free 5-7 35-45 By sea from China to UAE, then ship it by local delivery company in UAE none
Battery Free 3-7 12-18 Special airline from China to UAE none

 


 Shipping from China to Norway, Switzerland, New Zealand, Mexico, Argentina & Brazil
 package

Shipping

Fee

Order Handling Time (Business Day)

Delivery

(Business

Day)

 Shipping Methods

Import

Tax

small package

(1-5.5kgs)

Free

2-3

10-13

FEDEX, UPS, DHL, etc.,

Yes, if you are asked to pay

6kgs<package

<80kgs

Free 2-4 10-13 FEDEX, UPS, DHL, etc., Yes, if you are asked to pay


Battery
Free 3-5 12-15 FEDEX, UPS, DHL, etc., Yes, if you are asked to pay

 Stealth Bomber

Ebike

We cannot ship this bike to these countries, but the DIY parts package for stealth bomber ebike can be shipped to these countries, the shipping rate and delivery are same to 6kgs<package<80kgs

  


 Shipping from China to Qatar, Saudi Arabia,(We cannot ship Stealth Bomber Ebike to this destination).
 Package

Shipping
Fee

Order Handling Time (Business Day)

Delivery
(Business
Days)

Shipping Methods

Import
Tax

package
(1-30kgs)

calculated 
at checkout
2-3 10-15 FEDEX, UPS, DHL or POST yes, if you are asked to pay 
package>30kgs,
normally the DIY
parts package for stealth bomber Ebike
calculated 
at checkout
2-4 10-15 FEDEX, UPS, DHL or POST yes, if you are asked to pay


Fulfillment & Warehouse Network

We are Authorized Distributor of Unit Pack Power ebike batteries with base factory in Shenzhen China, Oversea warehouse in US, UK, Germany, Australia and Canada. With this advantage, we can provide fast delivery from US, UK, Germany, Australia & Canada.
We are Authorized Distributor of Drvetion electric bicycles with base factory in Guangzhou, China, warehouse in Spain and Germany, which can provide fast delivery to European countries from Spain and Germany.
  • Local Inventory Orders: Orders for items stocked at our US, UK, or EU, CA, Australia are dispatched directly from those local warehouses via local ground couriers (e.g., FedEx, UPS, DHL or DPD).
  • Direct Factory Orders: Items or custom configurations not currently stocked in regional warehouses are shipped directly from our primary manufacturing hub in Guangzhou, China."

Updated on 28th, July, 2026

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