White-background product view. Color and labeling can be customized.
Cylindrical - Model 21700
21700 3.7V 5,000mAh Lithium-ion Cell
- 电芯类型
- Cylindrical
- 标称电压
- 3.7V
- 额定容量
- 5,000mAh
- 尺寸
- 21700 single cell
- 循环寿命
- ≥ 800 cycles (80% retention)
- 连接器
- XT60 / JST / customizable
Application Guide
21700 Lithium Battery Cell for High-Energy Pack Design
21700 lithium cells are widely used in modern cylindrical battery packs because they provide higher capacity per cell than 18650 formats while keeping pack design compact. They are suitable for power tools, e-mobility, robotics and other applications where energy density and assembly efficiency matter.
Typical Applications
- Power-tool battery packs
- E-bike, scooter and light mobility packs
- Robotics and high-energy portable devices
- Custom cylindrical lithium battery packs
Custom Battery Options
- Single-cell sourcing or complete pack assembly
- Series/parallel configuration for voltage and capacity targets
- High-current BMS and thermal design support
- Connector, cable, housing and label customization
Related buying guides
Technical Data
规格参数
Model 21700
产品特点
21700
- A-grade lithium-ion cells, high consistency
- Long cycle life ≥ 800 cycles
- Wide operating temperature -20°C ~ 60°C
- Smart BMS with multiple safety protections
- Customizable wiring, connectors and housing
- 容量定制
- 连接器定制
- PCM / BMS 定制
- 线长定制
- Logo 印刷
- 电池包组装
常见问题
Is 21700 better than 18650?+
For many new pack designs, 21700 cells provide higher capacity per cell and can reduce the number of cells, welds and balancing points in the pack.
Can BLUS ENERGY build custom 21700 battery packs?+
Yes. We can design series/parallel 21700 battery packs with BMS, connectors, cables, housing and certification support.
如何申请产品报价与样品？+
请在联系页面填写表单，或发送邮件至 info@blusenergy.com。请注明电压、容量、尺寸、应用场景、目标认证与数量需求，工程师会在 24 小时内回复。
产品最小起订量（MOQ）是多少？+
标准电芯：MOQ 500 只。定制电池包：打样 100 只起，量产 1,000 只起。小批量可另议。
电池产品具备哪些国际安全认证？+
IEC62133、UN38.3、MSDS、CE、RoHS、UL2054、UL9540、IEC62619、KC、BIS、PSE、CB、ISO9001、ISO14001。如有其它认证需求可另行安排。
样品打样和批量交货周期分别需要多久？+
标准产品：7–15 天。定制电池包：样品 15–25 天，量产 25–45 天（视认证与模具而定）。
所有电池产品的官方质保期限是多长？+
消费类电芯 12 个月，工业类电池包 24 个月，储能系统视项目情况最高可至 10 年。
储能成套设备是否提供安装指导与技术支持？+
提供。BESS 与家庭储能配备安装手册、远程培训、现场调试（收费）以及 7×24 小时工单支持。
获取报价 - 21700
我们提供 10 mAh 到 100 kWh 的定制电池方案。提交您的需求 —— 工程师 24 小时内回复。