21700 3.7V Rechargeable Battery Packs
GLE 21700 Li(NiCoMn)O2 lithium battery
Geilienergy 21700-3350mAh lithium battery
good consistency lifep04 car battery
GLE 21700 3350mAh 3.7V 12.39WH 05

GLE 21700 3350mAh 3.7V 12.39WH

Product description: Geilienergy 21700-3350mAh lithium battery has the characteristics of high safety, good consistency and high reliability. Widely used in electric bus, electric logistics vehicle, electric special vehicle, power station, energy storage system, etc.

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Cell Size

Item

Description

Dimensions

H

Height(Bare Cell)

71mm max

D

Diameter(Bare Cell)

21.9mm max

GLE 21700 3350mAh 3.7V 12.39WH 06

Parmeter

Cell Specification

ITEM

SPECIFICATION

Normal capacity

3350 mAh@0.5C

Minimum capacity

3250 mAh@0.5C

Normal voltage

3.6V

Energy density

450 Wh / L

183 Wh / Kg

Charging voltage

4.20 ±0.05 V

Discharge ending voltage

2.75 ±0.05 V

Standard charging current

0.5C(1675 mA)

Standard discharge current

0.5C(1675 mA)

Max charge current

1C(45℃>T≥10℃)

0.5C(10℃>T≥0℃)

0.1C(0℃>T≥-10℃)

 

Max discharge current

1C(60℃>T≥45℃)

2C(45℃>T≥35℃)

3C(35℃>T≥0℃)

1C(0℃>T≥-20℃)

Max recommended charge and discharge cell body temperature

Charge:-10~45℃

Discharge: -20~60℃

Maximum short term allowable charge and discharge cell body temperature. Charging and discharging at these conditions will shorten cell cycle life.

Charge: 60℃

Discharge: 75℃

Internal resistance

≤35 mΩ(AC Impedance, 1000 Hz)

Cell dimensions

Height  : 71.0mmMax

Diameter:21.9mmMax

Weight

≤ 67g

Characteristics

NO.

Item

Standard

Test  Method

1

Discharge Characteristics (Room Temperature)

Discharge    capacity    /    Initial capacity*100%

A) 0.5C1A ≥100%

B) 1C1 A ≥95%

C) 2C1 A≥90%

D) 3C1 A≥90%

Under the room temperature, after 0.5C standard charged, rest for 15min and then discharge at 0.5C, 1C,2Cand 3C to the discharge cut-off voltage 2.75V respectively. Discharge capacity of different rate accord with testing standard.

2

Normal Storage

Residual capacity ≥ Initiall capacity *85%

Recovery capacity ≥ Initiall

capacity *90%

Tested the initial condition and initial capacity of battery. Store for 28 days after standard charged, tested the final condition of battery. Then discharge at 0.5C5A to the discharge cut-off voltage 2.75V, tested the residual capacity of battery. 0.5C/0.5C tested the recovery capacity of battery. Charge/discharge cycle can be conducted for 3 times before meeting the Standards.

3

CycleLife

Residual capacity ≥ Initiall capacity*80%

Measured the initial condition and initial capacity of battery. Then conduct 0.5C/1C 500th cycle measured the final condition of battery.

4

Long Time Storage (45℃)

Recovery capacity ≥Initial capacity *90%

Standard charge. Then discharge at 1C to 30 min . Tested the initial condition of battery. Store for 28 days at 45±2℃ temperature, measured the final condition of battery. Then conduct 0.5C/ 1C cycle for 3 times to record the discharge capacity.

5

Discharge Characteristics under Different Temperature

Discharge capacity / Initialll capacity *100%

A) 55 ℃ ≥ 100%

B) -10 ℃ ≥ 60%

Tested the initial condition and initial capacity of battery. Standard charge. Put the battery into a 55℃±2℃ for 4h, discharge at 0.5C to the cut-off voltage 2.75V, then standard charge at room temperature. In turn put the battery into -10℃±2℃ for 8h, discharge at 0.5C to the cut-off voltage, then test the final capacity of the battery, and then store it for 2h at room temperature. Observe the variation of the battery’sappearance.

Safety Performance

NO.

Item

Standard

Test Method

1

Overcharge

No explosion、No fire

Standard charge. Charge at 1I1(A) to 10V.

2

Over Discharge

No explosion、No fire、No leakage

Standard charge. Discharge at 1I1(A)to 90 minutes .

3

Short Circuit

No explosion、No fire

Standard charge. Keep the battery into a explosion-proof tank and short-circuit the positive and negative terminals directly (general resistance shall be less than 5mΩ). Short circuit time 10minutes.

 

4

Drop

No explosion、No fire、No leakage

Standard charge. Then let it fall off from a height of 1.5m(the lowest height) to the cementfloor.

5

Crush

No fire, No explosion,

Standard charge. Placed the battery in two iron plane moulds, and connected with the thermocouple. With the most strongly 13 KN pressure for the moment compression. Observe the variation of the battery’s appearance and temperature.

6

Hot Oven

No fire, No explosion

Standard charge. Keep the battery connected with a thermocouple and put it into a gravity convection or circulating air oven. Temperature is raised at a rate of 5  ℃

±2 ℃ per minute to a temperature of 130 ℃±2 ℃ and remained for 30min at this temperature. Observe the variation of the battery’s appearance.

Environmental Characteristics

NO.

Item

Standard

Test Method

1

Temperature Cycling test

No leakage \ fire \ explosion

Standard charge. Put the battery into a 20 ℃ ±5 ℃ chamber:

a) Raising the chamber temperature to75℃±2℃ for6h;

b) reducing the chamber temperature to-40℃±2℃ for 6h;

c) change the temperature within 30minutes;

d) repeating the sequence for 10cycles.

2

Low Pressure

No explosion、No fire、No leakage

Standard charge. Keep the battery to the altitude chamber of 11.6Kpa 6hours.

3

Vibration

Diminishing rate of voltage≤10%

No remarkable damage \ smoking \ explosion \ leakage

Standard charge. Equip it to the vibration platform, adjust and prepare the test equipment according to following vibration frequency and relevant swing, doing frequency sweeping from X, Y, Z three directions, each from 7Hz to 200Hz for 3 hours of recycling

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GLE 21700 3350mAh 3.7V 12.39WH

   

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