36 В Ач светодиодный фонарь большой емкости аккумулятор для электровелосипеда с задней

This "Guangmang" type rear rack battery, can put in 52PCS 18650 cylinder cells, come with a double-deck luggage carrier and 2A smart charger. When you received it you can start to use it, no more need to prepare anything.

Lithium ion Battery Optional Specifications

We manufacture a variety of products such as, electric bike conversion kits, mountain and city electric bikes, fat tyre electric bikes and relative parts for electric bicycles. Our factory is certified by CE, SGS, CCC, EEC and other related certifications. Our products are reliable and durable. We export to Europe, the USA, Canada, Southeast Asia, Australia and many other countries . Our customers have given us high praise for our products and service. The business philosophy at our company is that the customers are first, employees are second and shareholders are last. 

Q:How many years will my battery last?
A:The average rider can use a lithium battery for 2-3 years before feeling like it needs to be replaced. This depends on riding conditions, the weight of the rider, amount of use and discharge rate over time. Discharging your lithium battery quickly under high current will lower the battery capacity over time.

Q:How should I charge the battery?
A:To achieve the longest life from your battery it is best to charge the battery after each use or at least once daily if used every day. It should also be charged once every month if not used for a long period of time. All bikes come with smart chargers which stop charging when the battery is at capacity, so it is okay to leave you bike plugged in at all times.

Q:What does the battery management system do and do your batteries have them?
A: Yes, all of our lithium ion batteries come with battery management systems. The battery management system (BMS) is a small piece of circuitry incorporated as part of the lithium ion battery packs; it is designed to protect against overcharge, excessive discharge and to balance the charge between the individual cells. It's very important to have this for safety and for enhanced battery life.

Q:What type of battery do you use ?
A:We use only Lithium-ion batteries: they are lighter than lead batteries and last longer. Their durability and reliability are also much better.