- compatible brand : OEM
- rechargeable : RECHARGABLE
- Type : Li-ion Batterty
- use : Camera, Karaoke Microphone, MP3 / MP4 Player, Home Appliace
- model number : 21700 2S1P
- brand name : OEM OR XMX
- place of origin : Guangdong, China
- battery type : Li-ion Batterty
- color : Silver, Blue
- nominal voltage : 7.4V
- products status : Stock
- Capacity : 4000mAh
- Place of Origin : Guangdong
- Color : Blue/SILVER
- Voltage : 7.4V
- Keyword : 3.7v Lithium Ion Battery
- Charging life cycle : 500 Cycle Times
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ITEM NO
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Detail data sheet
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Model
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21700-2S1P-4000mAh-7.4V
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Configuration
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2 Series 1 Parallel 2S1P
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Nominal Voltage
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7.4V
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Rated Capacity
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4000mAh 0.2C discharge
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Energy
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Approx. 29.6Wh
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Charge Voltage
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8.4V ±0.05V
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Standard Charge Current
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0.5C ~2000mA
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Max. Continuous Discharge Current
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1C 4000mA – *Can be customized with high-drain cells e.g., 10A, 15A*
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Cell Type
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High-Quality Li-ion 21700
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Internal Resistance
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< 50mΩ including BMS and connectors
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Dimensions LxWxH
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Approx. 78mm x 22mm x 70mm Customizable
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Weight
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Approx. 180-200g
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Connector
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Customizable e.g., JST, XT30, bare wires
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Protection
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Built-in BMS Battery Management System
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Product Description
Key Advantages:
ISO9001 Certified Factory
✅ UN38.3 / MSDS / CE / RoHS/UL/KC
✅ Fast Response & Professional Service
✅ Stable Supply and Competitive Price
✅ UN38.3 / MSDS / CE / RoHS/UL/KC
✅ Fast Response & Professional Service
✅ Stable Supply and Competitive Price
Our custom lithium ion battery packs are designed for solar energy storage, e-bikes, and industrial applications. Each pack uses
high-quality 21700 or 18650 cells with smart BMS protection.
high-quality 21700 or 18650 cells with smart BMS protection.
Detailed Images
Product detail drawing
产品细节图 +产品细节介绍
Item Specification :Cell
Type 21700 Li-ionNominal Voltage3.7V / 7.4V / 12V Capacity 4000–36000mAh optional
Working Temperature-20C ~ 60C
– High energy density and long lifespan >2000 cycles – Waterproof and dustproof casing IP65 optional – Built-in BMS for overcharge/overdischarge protection – CE, RoHS, UN38.3 certified
We design and produce customized lithium battery packs according to your specifications:
* Voltage & Capacity Design 3.7V~100V
* Shape & Size Customization
* BMS, Connector, and Cable Options
* Sample Ready Within 7 Days
* Voltage & Capacity Design 3.7V~100V
* Shape & Size Customization
* BMS, Connector, and Cable Options
* Sample Ready Within 7 Days
Introduction of product advantages or application effect or application mode
产品优点or使用效果or使用方式的介绍说明
battery solution for your selection
* 3S1P 11.1V 2200mAh for Power Tools
* 4S2P 14.8V 5200mAh for E-bike
* 7S3P 25.9V 7800mAh for Robots
* 12V / 24V / 48V LiFePO4 Battery Modules for Home Solar Systems
The 21700 2S1P battery pack, with its balanced voltage, considerable capacity and powerful discharge capability, is mainly targeted at “portable devices that require strong power and medium endurance.
Product Presentation
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Product Name |
21700 2S1P 7.4V 4ah battery pack
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packing way |
2S1P
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Capacity |
4000mah
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Voltage |
7.4v
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charge restriction voltage |
8.4v
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rated power |
29.6wh
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Weight
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150g
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warranty
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1 year
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shipment package
尺寸介绍货尺寸图片
Company Introduction
With over 10 years of experience in the lithium battery industry, we specialize in 18650 and 21700 cells and a wide range of customized battery packs.
Our products are widely used in E-bikes, Power Tools, Solar Energy Storage, Medical Devices, and Smart Equipment.
We own advanced production lines, strict quality control systems, and a professional R&D team to support OEM/ODM projects.
Our products are widely used in E-bikes, Power Tools, Solar Energy Storage, Medical Devices, and Smart Equipment.
We own advanced production lines, strict quality control systems, and a professional R&D team to support OEM/ODM projects.
Packing&Shipping
FAQ
Why Choose Us ?we give you qo reasons
1.10+ Years Battery Industry Experience
2.Direct Factory with Stable Quality & Supply
3.Strong R&D and Customization Capability
4.Wide Range: 18650 / 21700 / LiFePO4 / Polymer pack
5.Export Experience to 30+ Countries
3.Strong R&D and Customization Capability
4.Wide Range: 18650 / 21700 / LiFePO4 / Polymer pack
5.Export Experience to 30+ Countries
6.Professional battery manufacturer in Dongguan, China
7. OEM / ODM service, flexible design
8.Strict quality control and testing before shipment
9.Fast delivery and stable supply
10.Quick response — within 12 hours
7. OEM / ODM service, flexible design
8.Strict quality control and testing before shipment
9.Fast delivery and stable supply
10.Quick response — within 12 hours
Company introduction
Xinmengxing Technology is a high-tech enterprise. This is our third five-year period. We are constantly pursuing technological innovation, thinking innovation and quality innovation。we adheres to technological innovation, management innovation and R&D innovation as its foundation, constantly enhancing the competitiveness of its products
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