12.8v 40ah Lifepo4 Battery Pack
1. Deep cycle lithium battery pack 12V 40Ah feature
- High energy density
- High working voltage for single battery cells
- Pollution-free
- Long cycle life
- No memory effect
- Capacity, resistance, Voltage, platform time consistency is good
- With short-circuit production function, safe and reliable
- Factory price & High quality
- Good consistency, low self discharge
- Light weight, small size
- High discharge rate
- The lifepo4 battery pack is widely used for electric bicycle,golf
car,electric bike,electric wheelchair,power tools,electric
scooter,emergency light,etc
2. Deep cycle lithium battery pack 12V 40Ah Specification
NO. | Items | Characteristics | Testing Methods |
1 | Nominal Voltage | 12.8V | Follow |
2 | Nominal Capacity | 40Ah | Follow |
3 | Minimum Capacity | 38Ah | Follow |
4 | Battery internal Impedance | Internal Impedance≤80mR | Internal Impedance Testing Machine(1kHz ) |
5 | Shipment Voltage | 12.8~13.6V | Multi-meter |
6 | Dimension | Length | MAX: 1196x165x174mm | Vernier caliper |
Width |
Height |
gross weight | 6.3kg | 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 | 50A | Multi-meter |
10 | Allowed maximum continuous discharge current | 50A | Pulse current 170A/3S |
11 | Allowed maximum reverse charge voltage | NO Allowed | / |
12 | Allowed maximum charge voltage | 14.6±0.1V | Multi-meter |
13 | Discharge cut-off voltage | ≤10V | Multi-meter |
3. Deep cycle lithium battery pack 12V 40Ah 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 0.2C 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 |
4. Storage & Transportation
- Based on the character of cell, proper environment for
transportation of LiFePO4 battery pack need to be created to
protect the battery.
- Battery should be stayed in the ware house -20℃~35℃ where it’s dry,
clean, shade, and well-ventilated.
- The battery should be stored in 50% SOC during transportation.
- The battery need to be charged every 6 months if out of use.
- Keep the battery against dropping, turning over and serious
stacking during loading.
5. Warning & Tips
Please read and follow the specification and caution remarks on
battery surface before use the battery. Improper use may cause
heat, fire, rupture, damage or capacity deterioration of the
battery. Shenzhen Topband Battery Co., Ltd. Describes is not
responsible for any accidents caused by the usage without following
our specification.