
1. Battery feature
- Long life time
- High energy densuty
- Excellent performance and Safty
- Maintenance free
2. Specification
NO. | Items | Characteristics | Testing Methods | |
1 | Nominal Voltage | 12.8V | Follow | |
2 | Nominal Capacity | 50Ah | Follow | |
3 | Minimum Capacity | 47.5Ah | 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: 187*166*117mm | Vernier caliper |
Width | ||||
Height | ||||
gross weight | 5.8kg | 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 | 30A | Multi-meter | |
10 | Allowed maximum continuous discharge current | 30A | Pulse current 300A/2S | |
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 |
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 |
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.
Shenzhen Topband Battery Co., Ltd
Shenzhen Topband Co., Ltd. was registered in so-called “China Silicon Valley”, Shenzhen Hi-tech Industrial Park in 1996, and got listed in Shenzhen Stock Exchange ( the stock code as 002139) in 2007.
After years of rapid development, now Topband takes lithium battery as the core technology and has become one of the leading suppliers of lithium battery solutions in China, focusing on nano lithium iron phosphate/ LiFePO4 technology for EV, RV/ caravan, marine, motorcycle, golf cart / trolly, UPS, solar storage, medical, floor scrubber, industrial, commercial use, etc.
Topband has more than 5000 staffs, covers an area of 100,000 square meters. And large production plants are mainly located at Shenzhen and Huizhou
Our R&D team of over 300 professionals, in cooperation with Tsinghua Research Institute and Harbin Industrial University have laid a firm foundation of our leading technology.
We have got the certificates of ISO9001, ISO14001, OHSAS18001, TS16949 and UL, CE, CB, UN38.3, TUV, etc.
Topband is a Hi-tech enterprise. Since the company established, with innovation, we have committed ourselves to making people’s lives more comfortable and high-efficient. We and our companions are working hard at making technology progress to let people enjoy the changes of new technology.