3.6V 21700 Lithium ion Battery
Description of 21700 Battery
This 21700 cell is a cylindrical lithium ion cell with 5000mAh. Unlike 18650 cell, it is larger. Besides, this kind 21700 cell has high energy density with low self-discharge and low impedance rate. If you need larger-capacity and better quality cell, this model is your best choice
HIGHLIGHTS OF 21700 Battery:
Full charge Voltage: 4.2V
Discharge Cut-off Voltage: 2.75V
Continuous Discharge: 10A
Internal Impedance:≤ 18mΩ
What does 21700 Battery Applicate in?
Medical equipment: monitor, ventilator, anesthesia machine,infusion pump, ECG machine, etc.
Customized Smart Robot: Educational Robot, Clean Robot, Service Robot, Industrial Robot,etc
Energy storage: backup power, AGV, solar panel, electricity, UPS, yachts, etc.
Financial equipment: mobile payment, micro printer, bar code scanner, POS machine, etc.
Elecmmunication: miner lamps, GPS, Smart robot , Laptop and etc.
APPEARANCE of 21700 Battery
There shall be no such defects as deep scratch, crack, rust, discoloration or leakage, which may adversely affect the commercial value of the cell.
Diameter : 21.1+0.2/-0.1mm
Diameter is defined as the largest data value measured on the “A” area of a cylindrical cell.
Height : 70.9+0.2/-0.3mm
-Specification of 21700 Battery-
|Nominal Capacity||5000 mAh|
|Minimum Capacity||4900 mAh|
|Nominal Voltage||3.6 V|
|Energy||≤ 18 Wh|
|Internal Impedance||≤ 18 mΩ|
|Weight||≤ 71 g|
|Charging||Method||Constant Current & Voltage|
|Standerd Current||1000 mA|
|Quick Charging||3500 mA|
|Standard Current||1000 mA|
|Max. Continuous Current||10000 mA|
|Operating Ambient Temperature||Charging||0°C ~ 45°C|
|Discharging||-20°C ~ 60°C|
|Cycle Life (times)||500|
|Self-discharge Rate (monthly)||≤ 3%|
-Some Cautions about 21700 Battery-
(1)Do not disassemble battery.
(2)Do not reverse the position and negative terminals.
(3)Do not connect the battery electrodes to an electrical outlet.
(4)Do not short circuit. Otherwise it will cause serious damage of the battery.
(5)Do not immerse the battery in water, and keep the battery in a cool dry surrounding if it stands by.
(6)Do not use or leave the battery at high temperature as fire or heater. Otherwise, it can overheat or fire or its performance will be degenerate and its service life will be decreased.
(7)Do not use the battery in a location where static electricity and magnetic field is great, otherwise, the safety devices may be damaged, causing hidden trouble of safety.Turn off the switch on its base.
(8)Do not transport or store the battery together with metal objects such as hairpins, necklaces, etc.
(9)Please use special lithium charger.
How to Custom 21700 Battery Pack
We have the unique ability to develop custom 21700 battery pack to fit your needs. Our expert team of chemists, engineers, and manufacturers who use proven chemistry and production methods that will get from spec to production fast. Slim, flexible, more powerful.