Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.
Normal charge:Charge battery under CC(0.33C)/CV(43.8V) mode until
over charge protection or the charge current reduce to 0.05C, and
then rest for 1h.
4. Product Performance
| NO. | Items | Criteria | Testing method |
| 4.1 | Rated Capacity | 40Ah | Rest for 1 hour after fully charged, then discharge with 0.33C
current until the battery reaches the discharge cutoff voltage.
Repeat above process for three times, if the discharge time is not
less than 120 minutes, you can stop and define the Discharging
current*time value (Ah) as battery capacity. |
| 4.2 | Minimum Capacity | 38Ah |
| 4.3 | Internal resistance | ≤40mΩ | 50% battery SOC state frequency of 1 KHZ ac resistance tester |
| 4.5 | Cycle life (DOD100%) | ≥2000cycle | Discharge with the current of 0.33C until it can’t discharge, and
then rest it for 1h. Charge the battery following
CC(0.33C)/CV(14.6V) mode to full capacity, and then rest it for 1h.
Repeat above process until full charged capacity is no more than
80% of normal value. Accumulated times is defined as cycle life. |
| 4.6 | Discharge Temperature Characteristics | -20℃ | ≥70% | At 25±5℃ discharge the battery with the current of 0.33C to the
cut-off voltage and record charge capacity. Store the battery at
various temperatures for 2h and discharge the battery with 0.33C to
the cut-off voltage. |
| -0℃ | ≥80% |
| 25℃ | ≥100% |
| 55℃ | ≥95% |
| 4.7 | Charge Retention ability | Residual capacity≥80% | Charge the battery to full capacity and store it for 28days, and
then discharge it with 0.33C to the cut-off voltage. |
5.Dimension drawing
6. Transportation
1. Based on the character of cell, proper environment for
transportation of LiFePO4 battery pack need to be created to
protect the battery.
2. Battery should be stayed in the warehouse 15℃～35℃ where it’s
dry, clean, shade, and well-ventilated.
3. The battery should be stored in 50% SOC during transportation.
4. The battery need to be charged every 6 months if out of use
5. Keep the battery against dropping, turning over and serious
stacking during loading.
7. Warning&Tips
Please read and follow the specification and caution remarks on
battery surface before use the battery. Improper use may cause
heat, fire, rupture, damage or capacity deterioration of the
battery. SHENZHEN TOPBAND NEW ENERGY CO.,LTD. Describes is not
responsible for any accidents caused by the usage without following
our specification.
1. The battery must be far away from heat source, high voltage, and
avoid to be exposed in sunshine for long time.
2. Never throw the battery into water.
3. Do not put the battery in a charger or equipment with wrong
terminals connected.
4. Never connect the positive and negative of battery with metal.
5. Avoid excessive physical shock or vibration. don't hit, fall,
stamp on the battery
6. Without the permission of the manufacturer and guidance,
forbidden to remove or to assemble the battery
7. Do not use the battery mixed with other different manufacturer,
type, or model batteries.
8. Keep the battery against high temperature. Otherwise it will
cause battery heat, get into fire or lose some function and reduce
the life.
9. When battery run out of power, please charge your battery timely
(≤15day).
10. Please use the matched or suggested charger for this battery.
11. If battery emit peculiar smell, heating, distortion or appear
any abnormity during working or storage, please stop using and take
it out from device.
12. If the battery leaks and get into the eyes or skin, do not
wipe, instead, rinse it with clean water and see doctor
immediately.
13. Please far away from children or pets.
14. Do not put disuse battery into a fire or water.
15. The battery pack supports up to 4 series-connected
applications.
16. Parallel connection of this battery pack is allowed under
condition that voltage difference ≤0.2V,parallel numbers ≤4 groups,
and operated by professionals.
