Guang Zhou Sunland New Energy Technology Co., Ltd.
Guang Zhou Sunland New Energy Technology Co., Ltd. Your Personal Battery Expert! sales@tacbattery.com Mobile : 15813319221
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1.Battery specifications
| No. | Items | Specifications |
Remark
|
|
1 |
Capacity for assembled cell discharging by 0.2C
| ≥20Ah | Standard discharging method |
|
2 |
Battery Voltage
|
≥40.8V
| Delivery voltage, Within 10 days from Factory |
|
3 |
Standard charge condition
| Charge with 0.2C constant current and 50.4Vconstant voltage, charge to 50.4V,continue charging till current declineto ≤0.01C | Charge voltage:50.4V±0.02V Charge current:0.2C |
|
4 | Maximum charge current |
10A
| For continuous charging mod |
|
5 |
Maximum discharge current
| 10A | For continuous discharge mod |
| 6 |
Peak current
| 170A | 10S |
|
7 |
Standard discharging method
|
0.2C constant current discharge to 30V, | 0.2C to 30V |
| 8
|
Weigh
|
4KG |
2.Battery Pack Dimensions
| NO. | Items | Units:mm | |
| 1 | Length | L | Max330mm |
| 2 | Width | W | Max147mm |
| 3 | Thickne | T | Max57mm |
| 4 | Wire | L1 | 200±3mm |
3.Handling of Cells
Consideration of strength of film package
1) Soft Aluminum foil
Easily damaged by sharp edge parts such as pins and needles, Ni-tabs, so don’t strike by those sharp parts.
2) Sealed edge may be damaged by heat above 100°C, bend or fold sealed edge.
Prohibition short circuit
Never make short circuit cell. It generates very high current which causes heating of the cells and may cause electrolyte leakage, gassing
or explosion, that are very dangerous.
The LIP tabs may be easily short-circuited by putting them on conductive surface.
Such outer short circuit may lead to heat generation and damage of the cell.
An appropriate circuitry with PCM shall be employed to protect accidental short circuit of the battery pack.
Mechanical shock
LIP cells have less mechanical endurance than metal-can-cased LIB.
Falling, hitting, bending, etc. may cause degradation of LIP characteristics.
Handling of tabs
The battery tabs are not so stubborn especially for aluminum tab.
Don’t bend tab.
Do not bend tabs unnecessarily.
4.Storage of the Batteries
The batteries should be stored at room temperature, charged to about 30% to 50% of capacity.
We recommend that batteries be charged about once per half a year to prevent over discharge.
5. Other The Chemical Reaction
Because batteries utilize a chemical reaction, battery performance will deteriorate over time even if stored for a long period of time without being used. In addition, if the various usage conditions such as charge, discharge, ambient temperature, etc. are not maintained within the specified ranges the life expectancy of the battery may be shortened or the device in which the battery is used may be damaged by electrolyte leakage. If the batteries cannot maintain a charge for long periods of time, even when they are charged correctly, this may indicate it is time to change the battery.