1. Smart Lithium battery 12V 12Ah Specification
1 | Nominal Voltage | 12.8V | |
2 | Normal Capacity | 12Ah | |
3 | Internal Resistance | ≤60mΩ | |
4 | Series application | Not allowed | |
5 | Communication function | Bluetooth | |
6 | Operation temperature range @charging | 0~45℃ | |
7 | Standard charge voltage | 14.6±0.1V | |
8 | Float charge voltage(for Standby use) | 13.8±0.1V | |
9 | Allowed MAX charge current | 12A | |
10 | Recommended charge current | ≤6A | |
12 | Output Voltage Range | 8.0~14.6V | |
13 | Allowed discharge current | 12A | |
14 | Pulse discharge current | 55A withstand 3s | |
15 | Discharge Cut-off voltage | 8.0V | |
16 | Dimension | Length 151±2mm | |
Width 98.5±2mm | |||
Height 95±2mm | |||
17 | Weight | Approx. 1.6Kg | |
18 | Storage Temperature & Humidity Range | Short: within 1 month | -20~35℃, 45~75%RH |
Long term: above 1 month | 10~30℃, 45~75%RH | ||
19 | Self-discharge rate | Residual capacity | ≤3% per month; ≤15% per year |
Reversible capacity | ≤1.5%per month; ≤8% per year |
2. Smart Lithium battery 12V 12Ah Circuit Protection
Test item | Content | Criterion |
Over charge | Over-charge protection for each cell | 3.80±0.03V |
Over-charge release for each cell | 3.60±0.05V | |
Over-charge release method | Under the release voltage | |
Over discharge | Over-discharge protection for each cell | 2.00±0.05V |
Over-discharge release for each cell | 2.30±0.05V | |
Over-discharge release method | Charging | |
Over current | Discharge over current protection | 55~65A |
Protection delay time | 100~200ms | |
Over current release method | Release after cutoff the load. | |
Over Temperature | Battery over temperature | Protection @65±5℃ |
Release @60±5℃ |
3. Electrical Characteristics & Test Condition
@Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.
NO | Items | Criterion | Condition | |
1 | Capacity | ≥125Ah | Rest for 1 hour after fully charged, then discharge with 0.33C current until the battery reaches the cutoff voltage. you can stop and define the Discharging current*time value (Ah) as battery capacity. | |
2 | | ≥2000cycle | Charge / CC(0.33C)/CV(14.6V); | |
3 | | -20℃ | ≥70% | At 25±5℃ discharge the battery with the current of 0.33C to the cut-off voltage. Store the battery at various temperatures for 2h and discharge the battery with 0.33C to the cut-off voltage. Record the ratio between discharging & charging capacity. |
0℃ | ≥80% | |||
25℃ | 100% | |||
55℃ | ≥95% | |||
4 | Charge Retention ability | remain capacity≥90% | Charge the battery to full capacity and store it for 28days, and then discharge it with 0.33C to the cut-off voltage. |
4. New function
It's available to add Bluetooth tool for monitoring battery feature from smart phone as following:
5. Storage and 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 ware house -20℃~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.