Item

Parameters

Notes

Total Energy（Wh）

384

Nominal Voltage（V）

3.2

Nominal Capacity（Ah)

120

Standard Charge Current（A）

20

Adjustable

Max. Charge Current（A）

30

Recommended

Charge Cutoff Voltage（V）

6.0

5-6V solar panel power≤150W

Charge Cutoff Current（A）

1

Adjustable

Standard Discharge Current（A）

0.9

28-38V 0.9A direct drive LED light

Max. Continuous Discharge Current（A）

75

Recommended

Discharge Cutoff Voltage（V）

2.5

Battery voltage

Impedance（mΩ）

≤1

Between the positive and negative of the battery

Outer Case

ABS

Dimensions（mm）

260(L)*185(W)*95(H)

Outer case size

Weight（kg）

3.4KG

Outer case weight

Working Temperature（℃）

-20～55

Storage Temperature （℃）

-40～55

Working Condition Moisture（RH）

≤85%

Storage Condition Moisture（RH）

5%～95%

Wires&Connectors

Charge:12AWG wire+ waterproof connector

LED:16AWG wire+waterproof connector

Item

Test Instructions

Criteria

Normal Temp. Performance

Full charge in accordance with (3.3), store at 20±5℃ for 2h, then discharge in accordance with (3.4)

Discharge time ≥240min;

No fire,no explosion

 High Temp. Performance

Full charge in accordance with (3.3), store at 55±2℃ for 2h, then discharge in accordance with (3.4)

Discharge time ≥240min;

No fire,no explosion

 Low Temp. Performance

Full charge in accordance with (3.3), store at -20±2℃ for 2h, then discharge in accordance with (3.4)

Discharge time ≥150min;

No fire,no explosion

Normal Temp. Capacity Retention

Full charge in accordance with (3.3), store at 20±5℃ for 30 days, then discharge in accordance with (3.4)

Capacity retention:≥95%

C-rate Discharge Performance

Full charge in accordance with (3.3), standby at room temperature for 10min, and then discharge at 1C current till cut-off voltage at 2.5V, record the discharge capacity

Discharge capacity≥90%

Cycle Life

Full charge the battery in accordance with (3.3)at 20 ℃ ± 5 ℃, standby for 5min, and then then discharge in accordance with (3.4) till termination conditions;

Repeat the cycle;

Detect battery capacity every 25 cycles according to the standard charge and discharge test.

When the capacity is  80% of the rated, cycle life≥2000;

When the capacity is  60% of the rated, cycle life≥6000;

Item

Test Conditions

Criteria

Constant Temperature & Constant Heat Experiment

Full charge the battery in accordance with (3.3) and then store it open-circuit at the conditions of temperature of 40 ℃ ± 2 ℃, relative humidity 90 ~ 95%  for 48 hours;

Then return to the temperature condition of 20 ℃ ± 5 ℃, relative humidity of 25% to~ 85%

Discharge  in accordance with (3.4)

The battery pack has no obvious deformation, corrosion, smoke or explosion; discharge capacity is greater than 80% of rated.

Temperature Impact

After the battery pack is charged as required by 3.3,place it open-circuited in the oven;

1) Keep it at -40 ℃ ± 2 ℃ low temperature for 120min;

2) Then raised till 75 ° C ± 2 ° C at a rate of 10 ° C / min;

3) Maintain 75 ℃ ± 2 ℃ high temperature for 120min;

4) Drop the temperature till -40 ° C ± 2 ° C at a rate of 10 ° C / min

Repeat the cycle for 4 times,and then restore to room temperature;

remove the battery pack from the oven, standby at 25 ℃ for  120min till the lithium battery return to room temperature.

No deformation, nor cracking, nor leakage ;

Open circuit voltage, charge capacity are in line with the product specifications, and the battery can still be normally charged and discharged.

Item

Test Instructions

Criteria

Crush Test

The battery pack is charged as required by 3.3 ;

placed between the two extruded surfaces; 

gradually increasing the pressure at 2KN;

keep for 1min.

No fire, no explosion

Acupuncture Test

Fully charge the battery pack according to the provisions of 3.3; 

Place the thermocouple in the battery pack;

Acupuncture through the center of battery pack with a Ф5 stainless steel needle at a speed of 20-40mm / s.

No fire,no explosion,no leakage 

Short-Circuit Test

After the battery pack is charged in accordance of 3.3;

Keep for 1 h at 20 ° C ± 5 ° C;

Short-circuit the battery pack for 10min ( external resistance <10mΩ).

No fire,no explosion,no leakage 

Drop Test

After standard charging according to 3.3,the battery pack is kept in condition of 20 ° C ± 5 ° C for 1 h; and free fall the battery  from a height of 1.5m to the wooden floor.

No fire,no explosion,no leakage 

Over Charge Test

Remove BMS,charge the battery pack at  10A / 30V CC CV until one of the single cells voltage is higher than 5V at 20 ℃ ± 5 ℃ ambient temperature.

No fire,no explosion,no leakage 

Over Discharge Test

Remove BMS, discharge the battery pack at 0.5C (60A) current till the voltage drops to 0V at 20 ℃ ± 5 ℃ ambient temperature.

No fire,no explosion,no leakage