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* Suitable: D3F [https://us.dyucycle.com/products/dyu-small-electric-bike-d3f]/D3+ [https://us.dyucycle.com/products/dyu-d3plus-electric-mini-bike] * Parameter. 20A BMS(Battery Management System). The range is about 30 miles without pedaling. * More extended Service Life. lithium battery still has more than 80% capacity after 1000cylces. the life expectancy of our Ebike Battery is up to 5 years. * High Quality & Safe. The battery is equipped with a fuse and a BMS protective board to prevent overcharge, over-discharge, the current, and short circuits, and ensure a long life expectancy. * Waterproof. The battery case is ABS which is super waterproof. don’t worry battery was wet by rain or water. Voltage:36V Model:10.4Ah Rated Voltage：36V Rated Capacity：10.4Ah Battery Power：37.4Wh Max Charge Voltage：42V Discharge Cut-off Voltage：27.5V Max. Charge Current：4A Standard Discharge Current：4A Max. Discharge Current(BMS)：12A Over-current protection：60A Net weight：2.0kg Gross weight：2.3kg Battery size：205×75×90mm Package Contents: 1* Battery Packing size 240×140×115mm Operating Temperature: Charge:0℃～45℃ Discharge:-20℃～60℃ Note: 1. When charging the battery, please use the regular brand charger. The charging time should not exceed 6 hours. 2. It is strictly forbidden to place batteries in water and in fire, so as to avoid getting close to the heat source. It is not permitted to use metal and conductive materials to plug in the charging and discharging interfaces. 3. If you do not use the battery for a long time, please keep the battery power between 40% and 70%, it is recommended that the battery be charged every two months; otherwise, the battery may be damaged, and this irreversible damage is not within the warranty. 4. Please keep these products and accessories properly and keep them away from children. 5. Unauthorized self-repair and modification of parts may cause damage to the product and such man-made damage is not covered by the warranty. 6. Please use this product according to your local laws, regulations, and restrictions.