Dongguan Hanke New Energy Development Co., Ltd.  

Product Name: 3.7V 502040 350mAh Customizable Lithium Ion Battery Lithium Polymer Battery Model NO.: 502040 Rechargeable: Chargeable Installation: Packaged Electrolyte: Li-ion Shape: Square Battery Discharge Rate: Medium Discharge Rate Nominal Voltage: 4V Usage: Bluetooth Earphone Type: Lithium-Polymer Battery Nominal Capacity: 350mAh Charging Current: 1c Discharge Curren: 1c Battery Internal Resistance: <160m?; Cycles: 300times Battery Weight: 8g Charging Voltage: 4.25V Discharge Protection Voltage: 2.75V Storage Temperature: 0--45 Operating Temperature: -20--50 Lithium Battery Protection: Overcharge Protection, Overdischarge Protection, S Trademark: XinChen Transport Package: Plastic Tray with Carton Specification: 5.0*20*40mm Origin: Guangdong, China Product Description Battery name:3.7V 502040-350mAh customizable Lithium Ion Battery Lithium polymer batteryBattery model:502040-350mAhNominalcapacity:350mAhInternal resistance:≤160mΩ battery voltage:3.7Vrecharging current:≤0.5CDischarge current:0.5C Charging temperature:-20ºC~50º Discharge temperature:-20ºC~55ºC Battery weight:7gstorage temperature:-0ºC~45ºC output method:4.25V biggest size:5.0*20*40mm Discharge cut-off voltage:2.75V Instant discharge maximum current:1C Lithium battery protection:Short circuit protection, overcharge protection,Over discharge protection, over current protection,Temperature protectionCharging voltage protection:Customized according to customer needsApplication areas:Bluetooth earphoneSmart wearSmart braceletSmart homemedical instruments Shenzhen Xinchen Industrial Co., Ltd. Professional lithium battery manufacturers, can customize various types of lithium batteries according to customer requirements, Quality assurance, delivery on time. As lithium batteries have awide range of applications and many size specifications, please contact customer service to explain the battery requirements, such as: size specifications, capacity requirements, outlet requirements, whether with communication functions, use rate, temperature, delivery time, etc. Note:Free Design ProofingDanger warning:1. It is forbidden to immerse the battery in seawater or water. When it is not used, it should be placed in acool and dry environment.2. It is strictly prohibited to use the battery upside down3. It is strictly prohibited to directly connect the battery to the power socket.4. It is forbidden to use, leave or throw the battery beside hot high temperature sources (such as fire, heater).5. It is forbidden to directly connect the positive and negative poles of the battery with metal. Short circuit is forbidden at any time, it will cause serious damage to the battery.6. It is forbidden to transport or store the battery with metal, such as hair clips, necklaces, etc.7. Don't knock or throw, step on the battery, etc.8. Prohibition of mixing with liquid lithium ion or different types of polymer lithium batteries9. It is forbidden to bend the top edge, open or destroy the edge, and it is forbidden to guide the bottom of the cell edge.10. Do not drop, impact, or bend the battery11. Prohibit the use of damaged batteries12. It is forbidden to use or place the battery under high temperature (in direct sunlight or in ahot car), otherwise it may cause the battery to overheat, catch fire or malfunction, and shorten the life.13. It is forbidden to use in places with strong static electricity and strong magnetic fields, otherwise it is easy to damage the battery safety protection device and bring unsafe hidden dangers.14. The battery case design and packaging are forbidden to damage the battery, and the battery cell must not be disassembled under any circumstances.15. If the battery leaks and the electrolyte enters the eyes, please do not rub it. Rinse the eyes with clean water and send it to the doctor for treatment immediately, otherwise it will hurt the eyes16. If the battery emits abnormal odor, heat, discoloration, deformation or use, storage, or any abnormalities during charging, immediately remove the battery from the device or charger and disable it.17. If the battery is dirty, wipe it with adry cloth before use, otherwise it may cause poor contact function failure18. The batteries should be wrapped with insulated paper to prevent fire and explosion.