Shenzhen Topband Battery Co., Ltd
A professional manufacturer of LiFePO4 battery / lithium iron phosphate, dedicated to designing, researching, manufacturing, and exporting LiFePO4 batteries( cell & pack & energy storage system) to
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1. General Information
This specification defines the performance of rechargeable LiFePO4 battery pack TB1212F-S120A manufactured by Shenzhen Topband battery describes the type, performance, technical characteristics, warning and caution of the battery pack.
2.Specification
| NO. | Items | Criteria | Remarks |
| 2.1 | Rated Capacity | 12Ah | |
| Minimum Capacity | 11.4Ah | ||
| 2.2 | Energy | 153.6Wh | |
| 2.3 | Nominal Voltage | 12.8V | |
| 2.4 | Outgoing Voltage | ≥12.8V | |
| 2.5 | Internal resistance | ≤80mΩ | |
| 2.6 | Series parallel application | Support up to four groups in series and Need to inform battery suppliers | |
| 2.7 | Limited charge voltage | 14.6±0.2V | |
| 2.8 | Floating charge voltage | 13.8±0.2V | |
| 2.9 | Standard charge current | 6A | |
| 2.10 | Maximum charge current | 12A | |
| 2.11 | Standard discharge current | 6A | |
| 2.12 | Maximum discharge current | 12A/ Continue to finished | |
| 15A/ Continue to discharge 30 min | |||
| 2.13 | Pulse discharge current | Withstand 60A/3s | |
| 2.14 | Discharge cut-off voltage | 8.0V | |
| 2.15 | Dimension | Length: 151±2mm | |
| Width: 98.5±2mm | |||
| Height: 95±2mm | |||
| 2.16 | Weight | Approx: 1.6±0.3Kg | |
| 2.17 | Operating Temperature | Charging:0～45℃ | |
| Discharging:-20～60℃ | |||
| Recommended operating temperature:15℃～35℃ | |||
| 2.18 | Self-discharge rate | Residual capacity:≤3%/month≤15%/year | |
| Reversible capacity: ≤1.5%/month;≤8%/year | |||
| 2.19 | Storage Temperature & Humidity Range | Less than 1 month:-20℃～35℃,45%RH～75％RH | |
| Less than 3 months:-10℃～35℃,45%RH～75％RH | |||
| Recommended storage environment: 15℃～35℃,45%RH～75％RH | |||
| Long time storage: If the battery need be stored for a long time, the voltage should be 13.2V(50%SOC), and stored in the condition as storage proposal. It need at least one charge & discharge cycle every six months | |||
"Quick Discharge" means discharge to the cut-off voltage with 0.5C current.
4. Product Performance
| NO. | Items | Criteria | Testing method | |
| 4.1 | Rated Capacity | 12Ah | 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 | 11.4Ah | ||
| 4.3 | Internal resistance | ≤80mΩ | 50% battery SOC state frequency of 1 KHZ ac resistance tester | |
| 4.4 | Short circuit protection | Yes | Connect the positive and negative of this battery pack through a lead with the resistance less than 5mΩ. | |
| 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. | |
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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. | |
| Recovery capacity≥90% | ||||
5. Protective circuit specification
The batteries are supplied with a LiFePO4 Battery Management System (BMS)that can monitor and optimized each single prismatic cell during charge & discharge, to protect the battery pack overcharge, over discharge, short circuit. Overall, the BMS helps to ensure safe and accurate running.
| NO. | Items | Content | Specification |
| 5.1 | 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 | ||
| 5.2 | 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 recovery | ||
| 5.3 | Over current | Discharge over current protection | 80~110A |
| Protection delay time | 10~40ms | ||
| Over current release method | Release after cutoff the load. | ||
| 5.4 | Short | Yes. | Remove after the short circuit automatic recovery |
| 5.5 | Battery temperature | Charge over temperature | Protection @65±5℃ |
| Release @50±5℃ | |||
| Discharge over temperature | Protection @65±5℃ | ||
| Release @50±5℃ |
6. Dimensional Drawing
If this is not OK for you, please feel free to send us inquiry.
There's more models for option, such as 12V 15Ah, 12V 20Ah, 12V 50Ah, 24V 10AH, etc.
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