32700 4S7P SLA Replacement battery 12.8V 42Ah LiFePO4 pack wide temperature range
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32700 4S7P SLA Replacement battery 12.8V 42Ah LiFePO4 pack wide temperature range
1. Quick Details of 12.8v 42Ah SLA replacement battery
- Cylindrical high density LiFePO4 cells inside
- Compact in size and light in weight
- BMS manages to each cell for high reliability
- Extra long cycle life - more than 2000 times at 100% DOD
- Wider temperature range:-20℃~60℃
2. BMS management system of 12.8V 42Ah lithium battery
Over current protection: The BMS will cut-off protection circuit if it is over current.
Low-voltage protection: When the battery is low voltage, BMS automatically close all output function. You need to recharge the battery.
Over-voltage protection: When the battery is over voltage, BMS automatically close all input. You need to disconnect the charger.
Overload protection: When output power or start power of device is too large, BMS automatically cut off the circuit.
Short circuit protection: When DC output protection, BMS automatically cut off the circuit.
Overheating protection: When internal temperature is over 149℉ or 65℃, BMS automatically cut off the circuit.
3. 4S7P 12.8V 42Ah LiFePO4 Battery Pack Specification(@Battery initial Temp25±5℃)
| No. | Item | General Parameter | Remark |
| 1.1 | Description | 32700 4S7P SLA Replacement battery 12.8V 42Ah LiFePO4 pack wide temperature range | 4S7P |
| 1.2 | Battery Type | 32700 LiFePO4 battery cell | |
| 1.3 | Typical Capacity | 42Ah | |
| 1.4 | Typical Voltage | 12.8V | |
| 1.5 | End of Charge Voltage | 14.6V | |
| 1.6 | Charge Current | 0.2C | |
| 1.7 | Charging time | 5-6 Hours | |
| 1.8 | Over-Charge Voltage Protection cell | 3.65V | |
| 1.9 | Max continuous charge current | 21A | |
| 2.0 | Maximum Continuous Discharging Current | 42A | |
| 2.1 | Over-discharge Voltage Protection cell | 2.5V | |
| 2.2 | Max. pulse current | 60A for 3 seconds | |
| 2.3 | Terminal | M6 | |
| 2.4 | Dimension | 197*165*170mm/can be customized | |
| 2.5 | Weight | 5.7kg | |
| 2.6 | Operation Temperature Range | Charge 0~55 C, Discharge -20~60 C | |
| 2.7 | Storage Temperature & Humidity Range | Less than 1 month:-20℃～45℃,45%RH～75％RH | |
| Less than 3 months:-10℃～35℃,45%RH～75％RH | |||
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Recommended storage environment: 15℃～35℃,45%RH～75％RH |
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| 2.8 |
Long time storage: If the battery need be stored for a long time, the voltage should be at 50%SOC, and stored in the condition as storage proposal. It needs at least one charge & discharge cycle every six months. |
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4. Electrical Characteristics & Test Condition
Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.
Normal charge:Charge battery under CC(0.33C)/CV(14.6V) mode until over charge protection or the charge current reduce to 0.05C, and then rest for 1h.
| NO | Items | Criterion | Condition | |
| 1.1 | Normal Capacity | 42Ah | After Normal charge, discharge @0.33C current to the end of discharge voltage. | |
| 1.2 | Internal Impedance | ≤50mΩ | @50% SOC @1kHz AC internal resistance test instrument. | |
| 1.3 | 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. | |
| 1.4 | 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. | |
| 1.5 | Discharge temperature | -20℃(6h) | ≥70% | |
| characteristic@0.33C | ||||
| 0℃(6h) | ≥80% | Capacity @specified temperature | ||
| 25℃(4h) | ≥100% | Capacity @ 25℃ | ||
| 55℃(4h) | ≥95% | |||
| 1.6 | Capacity retention rate | remain capacity | After normal charge, store the battery @25±5℃ for 28days, then discharge capacity@0.33C,the retention capacity accord with criterion. | |
| ≥96% | ||||
| 1.7 | Communication | No | ||
5. Delivery of 12.8V LiFePO4 42Ah battery
• By Air with Door to Door Service
• By Sea with Door to Door Service
• By Express with Door to Door Service: DHL, TNT, UPS, FedEx etc.
6. Why Choose PAC Technology Co., Ltd?
Reliable quality -- We have more than 10 years of rechargeable lithium battery industry experience. Automated battery production line and precise equipment. In strict accordance with international standards for production inspection, to ensure battery quality and safety.
Positive service -- We give response for all inquiries/questions in 12 hours. We have a professional battery R&D team. We can provide professional customized and one-stop services.
Taking responsibility -- Purple Horn members to proactively take responsibility, we always offer the best Battery Solution to our customers.
Purple Horn provides 24 hours customer service. Waiting for your inquiry!
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