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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Low temperature 12V 300Ah Lithium Iron Phosphate Battery , over 2000 cycles
1. General Information
This specification defines the performance of rechargeable LiFePO4 battery pack TB12300F- S103A manufactured by Shenzhen Topband Battery Co., Ltd, describes the type, performance, technical characteristics, warning and caution of the battery pack.
2. Specification
| NO | Items | Characteristics | |
| 2.1 | Normal capacity | 300Ah | |
| 2.2 | Nominal energy | 3.84KWh | |
| 2.3 | Nominal voltage | 12V (LFP-4S) | |
| 2.4 | Internal resistance | ≤30mΩ @1kHz AC | |
| 2.5 | Normal charge voltage | 14.6±0.5V | |
| 2.6 | Float charge voltage(for Standby use) | 13.8±0.2V | |
| 2.7 | Allowed MAX charge current | 150A | |
| 2.8 | Recommended charge current | ≤150A | |
| 2.9 | Allowed MAX discharge current | 200A | |
| 2.10 | End of discharge voltage | 10.0V | |
| 2.11 | Dimension | 520±3 mm | |
| 268±2 mm | |||
| 222±2 mm | |||
| 2.12 | Weight (No accessories) | 38.0±1.0Kg | |
| 2.13 | Operation temperature | Charge | -20～45℃ |
| Discharge | -20～60℃ | ||
| 2.14 | Self-discharge rate | Residual capacity | ≤3%/Month; ≤15%/ year |
| Recover capacity | ≤1.5%/Month; ≤8%/ year | ||
| 2.15 | Storage environment | ≤1month | -20～+60℃, 5～75%RH |
| ≤3month | -10～+45℃, 5～75%RH | ||
| Recommend environment | 15～35℃, 5～75%RH | ||
| 2.16 | charge performance at low temperature | Battery can be charged at -20℃ | |
3. Electrical Characteristics & Test Condition
Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.
| NO | Items | Criterion | Condition | |||
| 3.1 | Normal Capacity | 300Ah | After Normal charge, discharge @0.33C current to the end of discharge voltage. | |||
| 3.2 | Internal Impedance | ≤30mΩ | @50% SOC @1kHz AC internal resistance test instrument. | |||
| 3.3 | Short circuit protection | Auto cutoff load when short circuit | Connect the positive and negative of this battery pack through a lead with 0.1Ω resistance. | |||
| 3.4 | Cycle life @DOD100% | ≥2000 cycles |
After Normal charge,discharge @0.33C current to the end of discharge voltage. Repeat above process until discharge capacity reduce to 80% of initial value. | |||
| 3.5 | Discharge temperature characteristic@0.33C | -20℃(6h) | ≥70% |
Capacity @specified temperature Capacity @ 25℃
| ||
| 0℃(6h) | ≥80% | |||||
| 25℃(4h) | ≥100% | |||||
| 55℃(4h) | ≥95% | |||||
| 3.6 | Capacity retention rate | remain capacity ≥96% | After normal charge, store the battery @25±5℃ for 28days, then discharge capacity @0.33C,the retention capacity accord with criterion. | |||
4. Circuit Protection
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 | Item | Content | Criterion |
| 4.1 | Over charge | Over-charge protection for each cell | 3.75±0.03V |
| Over-charge release for each cell | 3.60±0.04V | ||
| Over-charge release method | Under the release voltage | ||
| 4.2 | Over discharge | Over-discharge protection each cell | 2.50±0.03V |
| Over-discharge release for each cell | 2.8±0.04V | ||
| Over-discharge release method | Charging | ||
| 4.3 | Over current | Discharge over current protection | 255A±5A,delay time 30s±5s |
| Discharge over current release | Recovering after 30s | ||
| Short circuit protection | Available | ||
| 4.4 | Temperature | Charge over temperature protection | Protect@55±5℃; Release@45±5℃; |
| Charge under temperature protection | Protect@0±5℃; Release@10±5℃ | ||
| Discharge over temperature protection | Protect@65±5℃; Release@55±5℃; |
5. Dimensional Drawing
