Multi-Function Frame Battery Built-in genuine A+ grade lithinum cell. With on/off button, help you save more power. With Secure Lock, avoid your battery be stolen. Lighted battery LED power Indicator, inform you charge your battery on time. Each pack have ran through a full charge and discharge test in produce, to make sure you are getting every amp hour you paid for. With Strong Battery Manage System. Our BMS can protect battery prevent may problem, such as. With our strong, you can use this ebike battery more safety. Let you have a more pleasure experience while you are riding. Use A+ grade cells All THE TIME. Unit Pack Power never use fake cells. We insist on using A+ grade battery cells all the time. This is why our battery is expensive than others. Battery looks the same outside but different inside. When you receive them at first, they behave like a normal battery. But when you use it for a few mo. Nths, you will find that the battery no longer works. Model:DP 9 polly shark down tube. 14.483.545.55inch. Weight: 6.5kg(48v). Discharge port :5 pin. LED indicators : 4 LED lights. Continuous discharge current :30A. Over current protection :100±5A. Charger :3A, America standard charger. Fit bike: City bike, mountain bike, cruiser bike, fat bike, Tricycle/Trike, scooter etc. Circle time: 1000 times. Over-Current Protection, Over-Discharge Protection, Over-Charge Protection, Short-Circuit Protection. 1 x battery (frame mount +2 keys are included). Factory directly store: 10 years battery packing experience, from 24V, 36V 48V 52V 60V 72V to DIY Voltage/Size, all we can make it for you, Mature production technology, and filter the high consistency cells, we know how to make a reliable and safe battery for customers. Widely Compatible: Our battery fits most motor kits, for example: Bafang, Voilamart, CSC, Tongsheng, Ebikling, but exclude these four: Bosch, SHIMANO, Yamaha, Panasonic. Life expectancy is two times that of lead-acid batteries. The weight is more lighter. No memory effect and rechargeable. The battery pack life is more longer. Safer and more environmentally friendly, No heavy metals and hazardous substances. Built-in BMS system will prevent battery pack over-charge, over-discharge, over-current, over-heat, short circuit. According to transportation requirements, battery can not be fully charged. Please fully charge the battery once you receive it to activate the battery for maximum capacity. In order to keep the highest power and longest using life, make sure to charge the battery at least every three months once time, if prepare storage for a long time make sure keep battery capacity above 80%. Battery should be placed in a dry environment, far away from fire and water.