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. Features
-Outdoor camping or emergency use
- Multi-function: Cigarette lighter,Digital display, etc
- Convenient to carry
2. Specification
3. Applications
4. Battery Pack Basic Features
| NO. | Items | Characteristics | Testing Methods | |
| 1 | Nominal Voltage | 12V | Follow | |
| 2 | Nominal Capacity | 75Ah | Follow | |
| 3 | Minimum Capacity | 71.25Ah | Follow | |
| 4 | Battery internal Impedance | Internal Impedance≤50mΩ, | Internal Impedance Testing Machine(1kHz ) | |
| 5 | Shipment Voltage | 12.8-13.6V | Multi-meter | |
| 6 | Dimension | Length | Approx:300mm | Vernier caliper |
| Width | Approx:270mm | |||
| Height | Approx:104mm | |||
| gross weight | Approx:12kg | electronic scale | ||
| 7 | Working Temperature | Charge | 0~45℃,45~85%RH | Temperature & Humidity Instruments |
| Discharge | -20~55℃,45~85%RH | |||
| 8 | / Storage Temperature & Humidity Range | Short: above one month | -20~+55℃,45~85%RH | Temperature & Humidity Instruments |
| Medium: above three months | 0~+45℃,45~85%RH | |||
| Long:above one year | +5~+30℃,45~85%RH | |||
| 9 | Allowed maximum continuous charge current | 5A | Multi-meter | |
| 10 | Allowed maximum continuous discharge current | 30A | Multi-meter | |
| 11 | Allowed maximum reverse charge voltage | NO Allowed | / | |
| 12 | Allowed maximum charge voltage | 14.6±0.1V | Multi-meter | |
| 13 | Discharge cut-off voltage | 10±0.1V | Multi-meter | |
5. Battery Pack Electrical Characteristics
5.1 Testing Conditions (Unless Specially Requirements)
Temperature:20±5℃ Related Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
The testing items under the Shipment Voltage(12.8-13.6V )
5.2 Battery Pack Electrical Characteristics
| No. | Items | Standards | Testing Methods |
| 1 | Internal Impedance | Impedance ≤50mΩ | Under 20±5℃ Environment Temperature , the Usage Frequency of Fully Charge( 1KHz) , Use AC Internal Impedance test machine to test |
| 2 | Nominal Capacity | 75Ah | Rest for 0.5~1 hour after fully charge, Using electrical loader to connect with the battery output port, and discharge with constant current 0.2C till it can’t discharge. Do the cycle three times, if there is one time that the discharge time is equal or more than 285minute , you can stop. |
| 3 | Short circuit protection | No load ability after short-circuit .comeback capability of loading after remove the lead away, | Short the pack with the lead (<50mΩ). If remove the lead away, connect the electronic loader with P+, P- of protection board again, so load ability comes back. |
| 4 | Allowed Maximum continuous charge Current | 5A | charging with 5A for more than 0.5h and the added temperature of battery pack less than 20℃. |
| 5 | Allowed Maximum continuous discharge Current | 30A | Discharging with 30A for more than 0.5h and the added temperature of battery pack less than 20℃. |
6. Reliability Test
6.1 Testing condition (Unless Special Requirements)
Temperature:20±5℃ Relative Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
All testing under full capacity(13.2-13.6V)
6.2 Reliability Test
| No. | Items | Standards | Testing Methods | |
| 1 | Vibration Testing | The appearance of battery should not leakage, break or explosion | Fix a charged battery on a vibrating table, vibrate it for 90 minutes in three mutually perpendicular directions at the 0.8mm resonance. The frequency is to be varied at the rate of 1hz/min between 10 and 55 hertz. | |
| 2 | High Temperature Discharge Testing | The battery should be no remarkable breakage, distortion. Discharge time should not less than 255mins | Place a full charged battery under the environments of 55℃ for 2 hours. Discharge it at the current of 200mA to the cut-off voltage. Then keep it at 20℃±5℃ for 2 hours. | |
| 3 | Low Temperature Discharge Testing | The battery should be no remarkable breakage, distortion. Discharge time should not less than 180 minute | Place a full charged battery under the environments of -20℃ for 15-24 hours. Discharge it at the current of 200mA to the cut-off voltage. Then keep it at 20℃±5℃ for 2 hours. | |
| 4 | Constant Humidity & Temperature Testing | The battery should be no remarkable breakage, distortion. Discharge time should not less than180mins | Place a full charged battery under the environments of 40℃ and 90% - 95%RH for 48 hours. And keep it in the room temperature for 2 hours. Then discharge it at the current of 200mA to the cut-off voltage. | |
| 5 | High & Low Temperature Storage | The battery should be no remarkable breakage, distortion. And charge/discharge normally | Place a full charged battery in a oven with 55±2℃ for2 hours, then keep it under 20±5℃ for 4hrs, then place it in a oven with -20±2℃ for 2 hours, then keep for 4 hours under 20±5℃, cycle as high temperature-normal temperature-low temperature-normal temperature-high temperature for 10 times | |
7. BATTERY PACK SAFETY TEST
7.1 Testing condition (Unless Special Requirements)
Temperature:20±5℃ Relative Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
All testing under full capacity(13.2-13.6V)
7.2 Battery Pack Safety Test
| No. | Items | Standards | Testing Methods |
| 1 | Short-Circuit | The battery should be no remarkable breakage, distortion. And charge normally. | Use a resistor with less than 0.05Ω to make the battery short circuit for 1 hour. The appearance and characteristics are normal. |
| 2 | Over Discharge Protection Test | The battery should be no remarkable breakage, distortion. Appearance and charge are normal. | Discharge the battery at the rate of 20A with the load of 30Ω for 24h . Charging for 10sec with specified adapter , and check the voltage(≥8.0V) |
| 3 | Impact Test | The battery should be no explosion or catch fire | Place a full charged battery on a flat and put a stainless steel stick (Diamond 7.9mm) in the middle of the battery upright . Beat the steel stick with 9.1Kg |
8. Pack diagram
9. Packing & Transportation:
9.1 Battery Packing:
9.2 Transportation:
Batteries should be packed. During transportation they should be protected from vibration, shock, impact, rain and direct sunshine .The prompt vehicles are lorry, train, steamships or planes etc.
10. Battery Usage Notice
Please read and follow the handling instructions for the battery before use. Improper use of the battery may cause heat, fire, rupture, damage or capacity deterioration of the battery. SHENZHEN TOPBAND CO.,LTD,Describes is not responsible for any accidents caused by the usage without following our handling instructions.