Prouduct Description
Lithium Battery 18650 3.7V 20.8ah Rechargeable Li-ion Battery Pack for Solar Street Light
| Electrical Characteristics |
Nominal Voltage |
3.7v |
| Nominal Capacity |
20.8Ah |
| Energy |
76.96Wh |
| Internal Resistance |
≤80mΩ |
| Cycle Life |
>500 cycles @ 1C 100% DOD |
| Months Self Discharge |
<3% |
| Effciency of Charge |
100%@0.2 |
| Effciency of Discharge |
96-99%@0.2C |
| Standard Charge |
Charge Cut-off Voltage |
4.25±0.1V |
| Charge Mode |
0.2C to 4.25V,then 4.25V,charge current to 0.02C(CC/CV) |
| Charge current |
4.16A |
| Max charge current |
10.4A |
| Standard Discharge |
Continuous current |
4.16A |
| Max discharge current |
20.8A |
| Discharge Cut-off Voltage |
2.75V |
| Environmental |
Charge Temperature |
0 ºC to 45 ºC (32F to 113F) @60±25% Relative Humidity |
| Discharging Temperature |
-20 ºC to 60ºC (-4F to 120F) @60±25% Relative Humidity |
| Storage Temperature |
0 ºC to 40 ºC (32F to 104F) @60±25% Relative Humidity |
| Mechanical |
Plastic Case |
Steel shell |
| Dimension |
20*67*526mm |
| Terminal |
Connector |
| Weight |
370g |
Features of Lithium ion Battery
1,Longer Cycle Life:Offers up to 20times longer life and five times longer fioat life than lead acid battery, helping to minimize replacement cost and reduce total cost of ownership.
2,Lighter Weight:About 40% of the weight of a comparable lead acid battery. A 'drop in' replacement for lead acid batteries.
3,Higher Power:Delivers twice power of lead acid battery,even high discharging rate,while maintaining high energy capacity.
4,wider Temperature Range:-20ºC-60ºC.
5,Superior Safety:Lithium Iron Phosphate chemistry eliminates the risk of explosion or combustion due to high impact,overcharging or short circuit situation.
6,Increased Flexibility:Modular design enables deployment of up to four batteries in series and up to batteries in parallel.
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