3.7V Cylindrical lithium battery 18650 20000mAh

Short Description:

3.7V Cylindrical lithium battery product model: XL 14.8V 20000mAh

3.7V Cylinder lithium battery technical parameters (specific design according to customer requirements – voltage / capacity / size / line)

Single battery model: 18650

Packing method:Industrial PVC heat shrinkable film

Product Detail

Make an inquiry

Product Tags


.Voltage of single cell: 3.7V

.Nominal voltage after battery pack combination: 3.7V

.Capacity of single battery: 2.5ah

.Battery combination mode: 1 string and 8 parallels

.Voltage range of battery after combination:3.0v-4.2v

.Battery capacity after combination: 20Ah

.Battery pack power: 74Wh

.Battery pack size: 40*74*69mm

.Maximum discharge current: < 20A

.Instantaneous discharge current: 40A-60a

.Maximum charging current: 0.2-0.5c

.Charging and discharging times: > 500 times

3.7V 20Ah 白底 (2)


3.7V 20Ah 白底 (1)

Do not submerge the battery in the water.Warnings:

Do not mix fresh batteries with used batteries.

Do not mix batteries with metal stuff together.

Do not insert batteries with the (+) and (-) reversed.

Do not use Efest batteries with defective E-cig mods.

Do not disassemble, dispose in fire, heat or short circuit.

Do not put the battery in a charger or equipment with wrong terminals connected.


(1) Environmental friendly.

(2) High density of energy.

(3) High capacity.

(4) Fast charging.

(5) Safety in use.

(6) Long cycle life, chargeable up to 500 times.

(7) No memory effect.

(8) Doesn't contain Mercury, No fire, No explosion, No leakage.

(9) High temperature resistance.

(10) Stable discharge

Major Application:

(1) Portable equipment: Laptop, camcorder, PDA, digital camera, portable DVD etc.

(2) Home appliances: Two-way radio, Walkie-talkie, Electric toys, Electric bicycles, Emergency lighting

(3) Military equipment: IR telescope

(4) Medical devices

(5) Power tools

Our advantages:

1. Good quality experience with famous brands;

2. OEM service for customized battery;

3. 18650/lipo (500 times cycle life,after 500 times,still keeps 80% of initial capacity)

4. Our certification is complete;

5. Sample order(<10 pcs ) is available——helps you test the quality with “0” risk.

6. 12 month wanrranty——replace one by one if there is any quality problem.

7. In the field of batteries,Have more than 12 year professional experience.

  • Previous:
  • Next:

  • Related Products