Joinsun 21700 Battery Lithium-ion Cells Catalog ^{In Stock} 吉欣 21700 圆柱锂电芯产品目录 ^现货

3C Digital Type 3C数码型

	Model 电芯型号	Capacity 标称容量	Voltage 标称电压	Max Continuous Charge Rate 最大持续充电倍率	CDR Max Continuous Discharge Rate 最大持续放电倍率	Max Non-Continuous Discharge Rate 瞬间放电倍率	Max Series and Parallel Connections 最大串联和并联数	Cycle Life 循环寿命	Certificates 认证	Cathode Material 正极材料
In Stock 现货
	INR21700-40C	4500mAh 4.5Ah	3.6V	0.5C	2C	4C	7S 7P ^{(25.2V / 28Ah 28000mAh)}	400~500	UL 1642, CB IEC 62133, CE, RoHS, FCC, BIS IS 16046 16047, PSE, CCC (3C), BSMI, and more	NCM 三元
	INR21700-45C	4500mAh 4.5Ah	3.6V	0.5C	2C	4C	7S 7P ^{(25.2V / 31.5Ah 31500mAh)}	400~500		NCM 三元
	INR21700-48C	4800mAh 4.8Ah	3.6V	0.5C	2C	4C	7S 7P ^{(25.2V / 33.6Ah 33600mAh)}	400~500		NCM 三元
	INR21700-50C	5000mAh 5Ah	3.6V	0.5C	2C	4C	7S 7P ^{(25.2V / 35Ah 35000mAh)}	400~500		NCM 三元
	INR21700-55C	5500mAh 5.5Ah	3.6V	0.5C	3C	5C	7S 7P ^{(25.2V / 38.5Ah 38500mAh)}	400		NCM 三元

Energy Storage Type 储能型

	Model 电芯型号	Capacity 标称容量	Voltage 标称电压	Max Continuous Charge Rate 最大持续充电倍率	CDR Max Continuous Discharge Rate 最大持续放电倍率	Max Non-Continuous Discharge Rate 瞬间放电倍率	Max Series and Parallel Connections 最大串联和并联数	Cycle Life 循环寿命	Certificates 认证	Cathode Material 正极材料
In Stock 现货
	INR21700-40E	4000mAh 4Ah	3.6V	0.5C	3C	5C	7S 7P ^{(25.2V / 28Ah 28000mAh)}	600~1000	UL 1642, CB IEC 62133, CE, RoHS, FCC, BIS IS 16046 16047, PSE, CCC (3C), BSMI, and more	NCM 三元
	INR21700-45E	4500mAh 4.5Ah	3.6V	0.5C	3C	5C	7S 7P ^{(25.2V / 31.5Ah 31500mAh)}	600~1000		NCM 三元
	INR21700-48E	4800mAh 4.8Ah	3.6V	0.5C	3C	5C	7S 7P ^{(25.2V / 33.6Ah 33600mAh)}	600~1000		NCM 三元
	INR21700-50E	5000mAh 5Ah	3.6V	0.5C	3C	5C	7S 7P ^{(25.2V / 35Ah 35000mAh)}	600~1000		NCM 三元
	INR21700-55E	5500mAh 5.5Ah	3.6V	0.5C	3C	5C	7S 7P ^{(25.2V / 38.5Ah 38500mAh)}	400		NCM 三元

Power Type 动力型

	Model 电芯型号	Capacity 标称容量	Voltage 标称电压	Max Continuous Charge Rate 最大持续充电倍率	CDR Max Continuous Discharge Rate 最大持续放电倍率	Max Non-Continuous Discharge Rate 瞬间放电倍率	Max Series and Parallel Connections 最大串联和并联数	Cycle Life 循环寿命	Certificates 认证	Cathode Material 正极材料
In Stock 现货
	INR21700-40D	4000mAh 4Ah	3.6V	0.5C	3C	5C	20S 20P ^{(72V / 80Ah 80000mAh)}	800~1000	UL 1642, CB IEC 62133, CE, RoHS, FCC, BIS IS 16046 16047, PSE, CCC (3C), BSMI, and more	NCM 三元
	INR21700-45D	4500mAh 4.5Ah	3.6V	0.5C	3C	5C	20S 20P ^{(72V / 90Ah 90000mAh)}	800~1000		NCM 三元
	INR21700-48D	4800mAh 4.8Ah	3.6V	0.5C	3C	5C	17S 17P ^{(61.2V / 81.6Ah 81600mAh)}	800~1000		NCM 三元
	INR21700-50D	5000mAh 5Ah	3.6V	0.5C	3C	5C	13S 13P ^{(46.8V / 65Ah 65000mAh)}	800~1000		NCM 三元

High C-rate Type 高倍率型

	Model 电芯型号	Capacity 标称容量	Voltage 标称电压	Max Continuous Charge Rate 最大持续充电倍率	Fast Charging Rate 快充充电倍率	CDR Max Continuous Discharge Rate 最大持续放电倍率	Max Non-Continuous Discharge Rate 瞬间放电倍率	Max Series and Parallel Connections 最大串联和并联数	Cycle Life 循环寿命	Certificates 认证	Cathode Material 正极材料
In Stock 现货
	INR21700-33M	3300mAh 3.3Ah	3.6V	0.5C		5C	8C	7S 7P ^{(25.2V / 23.1Ah 23100mAh)}	300~400	UL 1642, CB IEC 62133, CE, RoHS, FCC, BIS IS 16046 16047, PSE, CCC (3C), BSMI, and more	NCM 三元
	INR21700-40P	4000mAh 4Ah	3.6V	0.5C		5C	8C	20S 20P ^{(72V / 80Ah 80000mAh)}	500~1500		NCM 三元
	INR21700-45P	4500mAh 4.5Ah	3.6V	0.5C		3C	5C	20S 20P ^{(72V / 90Ah 90000mAh)}	400~1000		NCM 三元
	INR21700-40T	4000mAh 4Ah	3.6V	2C	2C	10C	15C	13S 13P ^{(46.8V / 52Ah 52000mAh)}	400		NCM 三元

High Safety Type 高安全型

	Model 电芯型号	Capacity 标称容量	Voltage 标称电压	Max Continuous Charge Rate 最大持续充电倍率	Fast Charging Rate 快充充电倍率	CDR Max Continuous Discharge Rate 最大持续放电倍率	Max Non-Continuous Discharge Rate 瞬间放电倍率	Max Series and Parallel Connections 最大串联和并联数	Cycle Life 循环寿命	Certificates 认证	Cathode Material 正极材料
In Stock 现货
In Stock 现货	INR21700-40MF	4000mAh 4Ah	3.6V	0.5C		3C	5C	13S 13P ^{(46.8V / 52Ah 52000mAh)}	400~800	UL 1642, CB IEC 62133, CE, RoHS, FCC, BIS IS 16046 16047, PSE, CCC (3C), BSMI, and more	NCM 三元

For Drone 无人机型

	Model 电芯型号	Capacity 标称容量	Voltage 标称电压	Max Continuous Charge Rate 最大持续充电倍率	Fast Charging Rate 快充充电倍率	CDR Max Continuous Discharge Rate 最大持续放电倍率	Max Non-Continuous Discharge Rate 瞬间放电倍率	Max Series and Parallel Connections 最大串联和并联数	Cycle Life 循环寿命	Certificates 认证	Cathode Material 正极材料
In Stock 现货
	INR21700-40T	4000mAh 4Ah	3.6V	2C	2C	10C	15C	13S 13P ^{(46.8V / 52Ah 52000mAh)}	400	UL 1642, CB IEC 62133, CE, RoHS, FCC, BIS IS 16046 16047, PSE, CCC (3C), BSMI, and more	NCM 三元

➜ See Our 18650 Battery Cell Series 查看我们的 18650 锂电芯系列产品

About Joinsun OEM and ODM 关于吉欣代工和定制

Joinsun is a leading Chinese manufacturer and supplier of 21700 Battery and 18650 Battery Lithium-ion Cells in China. Joinsun focuses on providing OEM and ODM services to potential clients and customers. We can produce products with diverse performance levels, prices, and delivery times. 吉欣是中国领先的 21700 锂电芯和 18650 锂电芯制造商和供应商。吉欣专注于为潜在客户和现有客户提供代工和定制服务，我们能生产具有多种性能、价格和交期的产品。

About 21700 Battery ^{Related Knowledge} 关于 21700 锂电芯 ^相关知识

The 21700 battery is a cylindrical rechargeable lithium-ion cell, named after its physical dimensions—21mm in diameter and 70mm in length. Compared to the 18650 battery, the 21700 offers greater capacity, higher energy density, and improved overall performance, making it a preferred power source for demanding applications such as electric vehicles, industrial equipment, and energy storage systems. 21700 锂电芯是一种圆柱形可充电式的锂离子电芯，其名称来自它自身的物理尺寸：直径 21 毫米，长度 70 毫米，所以称为 21700。21700 与 18650 锂电芯相比，21700 锂电芯具有更大的容量、更高的能量密度和更优异的整体性能，因此它成为了电动车、电动工具、家电、数码产品等对容量有更高需求的产品的理想电源选择。

1. Electrical Characteristics 1. 电子特性

Nominal Voltage: 3.2V, 3.6V, 3.7V or 4V 标称电压: 3.2V, 3.6V, 3.7V 或 4V
Fully Charged Voltage: 3.65V or 4.2V 满充后电压: 3.65V 或 4.2V
Discharge Cut-off Voltage 放电电截止电压 : 2.5V~3V
Capacity Range: 3000mAh to 6000mAh, depending on chemistry and build quality 容量范围: 3000mAh~6000mAh
Max Continuous Discharge Rate (CDR): Some models support continuous discharge rates of over 20C 最大持续放电倍率: 一些型号能超过 20C 以上
Cycle Life: 300 to 1500+ cycles depending on usage patterns and chemistry 循环使用寿命: 300~1500次

The 21700 Battery Voltage Comparison Table: 21700 锂电芯电压对比表

Types 电芯类型	Nominal Voltage 标称电压	Full Charge Voltage 满充电压	Discharge Cut-off Voltage 放电截止电压
NMC	3.6V / 3.7V	4.2V	2.5V–3V
LCO	3.7V	4.2V	2.75V–3V
LMO	3.7V	4.2V	2.5V–3V
LFP	3.2V / 3.3V	3.65V	2.0V–2.5V

2. Chemistry 2. 化学特性

21700 batteries are available in several lithium-ion chemistries, each tailored to specific performance needs:
LCO: Lithium Cobalt Oxide, Prioritizes high energy density but offers moderate discharge capabilities.
LMO: Lithium Manganese Oxide, Known for enhanced safety and thermal stability.
NMC: Nickel Manganese Cobalt Oxide, Balances capacity, power output, and safety, widely used in various sectors.
LFP: Lithium Iron Phosphate, Offers excellent cycle life and safety, with lower voltage than NMC. 21700 锂电芯有多种锂离子化学体系可选，每种体系都针对特定的性能需求：
LCO：钴酸锂，侧重高能量密度，但放电能力中等。
LMO：锰酸锂，以安全性和热稳定性见长。
NMC：镍锰钴氧化物，在容量、功率输出和安全性之间取得平衡，广泛应用于各个领域。
LFP：磷酸铁锂，具有优异的循环寿命和安全性，但电压低于 NMC (镍锰钴氧化物)。

3. Certifications

High-quality 21700 batteries are typically certified to meet international standards, such as:
UL 1642, FCC, CE, CB IEC 62133
Additional certifications: CCC (China), PSE (Japan), BIS IS 16046/16047 (India), KC (Korea)

3. 认证

高品质的 21700 锂电芯通常通过国际标准认证，例如： UL 1642、FCC、CE、CB IEC 62133
附加认证：CCC（中国）、PSE（日本）、BIS IS 16046/16047（印度）、KC（韩国）

4. Applications

Thanks to their powerful performance and compact size, 21700 batteries are widely used in:
Electric Vehicles: 2-wheels and 3-wheelers scooters, self-balancing scooters, electric motorcycles, e-bikes, and ride-on toy cars.
Portable Electronics: Power banks, flashlights, emergency lamps, high-speed fans, portable fans, portable routers, e-cigarettes, and electric adult devices.
Industrial Tools: electric drills, saws, circular saws, chainsaws, electric scissors, robot lawn mowers, and garden power tools.
Energy Storage: power banks, portable power stations, RV lithium batteries, and marine lithium batteries.
Others: Outdoor solar systems, solar-powered surveillance systems, and 24-hour emergency backup systems.

4. 应用

得益于强劲的性能和紧凑的体积，21700 锂电芯被广泛应用于：
电动交通工具：两轮和三轮电动车、电动平衡车、电动摩托车、电动自行车以及儿童电动车。
便携式电子产品：移动电源、手电筒、应急灯、暴力风扇、手持小风扇、便携路由器、电子烟和成人电器。
工业工具：电钻、锯子、圆锯、链锯、电动剪刀、机器人割草机及园艺电动工具。
储能应用：移动电源、便携式电源站、房车锂电池和船用锂电池。
其他领域：户外太阳能系统、太阳能监控系统以及24小时应急备用系统。

5. Important Notice

Before purchasing or using a 21700 battery, always check compatibility with your device, especially regarding size and current requirements for charging and discharging.