Excellent battery efficiency
Kinstar Lithium-ion 48V 21Ah high capacity rack battery provide staying power, demonstrably have maximum energy density with small size and low weight for maximum riding pleasure.
Modern design and easy handling
The high capacity rack battery with a modern design which featured with a beautiful taillight. It is easy to remove and charge the battery at home. It can also be conveniently charged directly on the eBike.
Fast charge and no memory effect
Kinstar Li-ion 48V 21Ah high capacity rack eBike battery can be full charged in about 6 hours, durable energy storage without memory effect and extremely low self-discharge.
Long service life
The Battery Management System(BMS) offers maximum protection against overcharging, overdischarging, overcurrent, overheating and short circuits as well as extending the service life of the battery pack.
| Items | Specifications | Notes |
| Nominal capacity | 21Ah | 0.2C discharge at 25°C |
| Nominal voltage | 46.8V | Average operating voltage |
| Nominal energy | 982Wh | Capacity(Ah) × Voltage(V) |
| Charging voltage | 54.60 ± 0.05V | |
| Charging current | 4A 丨5A | Standard丨Rapid |
| Charging time | 6.0 hours 丨5.0 hours | Standard丨Rapid |
| Charging method | CC - CV | Constant current, constant voltage |
| Continuous discharge current | 10A 丨30A | Standard丨Maximum |
| Peak discharge current | 70A | Within a short time |
| Discharge end voltage | 36V | Discharge cut-off voltage |
| Dimensions | 325mm丨150mm丨73mm | Length丨Width丨Height |
| Typical weight | 4.80 KG | 169.30 oz |
| Charge temperature range | +10 ~ +45°C | +50 ~ 110°F |
| Discharge temperature range | -20 ~ +60°C | -4 ~ +140°F |
| Storage temperature | -20 ~ +45°C | Within 3 months |
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