Dear buyers, please contact customer service when you see the products you like, don’t worry about pre-ordering, look forward to your welcome Battery specifications: Brand Name:DAWEIKALA Model Number:14500 Type:Li-Ion Nominal Capacity:3800mAh Voltage: 3.7V Weight: 25g Rechargeable:Yes Internal resistance: within 50mΩ Environmental temperature: Charging: 0-60 Discharge: -20-60 Applicable types: digital products, cameras, camcorders, razors, communications, , energy storage, military, etc. Charging and discharging standard: more than 1000 times, charging cut-off voltage 4.2V (volt), discharging cut-off voltage 2.75V (volt) Certification:NONE Charger specifications: Model:988 Weight:58g Size:10.552.8cm/11*5.3*3cm Input: DC 5V Output : DC 4.2V 1200mA2 -We uphold the principle of honest sellers- If there is any problem with the product, or you are not satisfied with the product you received, you can contact us at any time, and we will provide you with a satisfactory solution If the item you received is defective, please contact us immediay If you have any questions about the product, please contact our customer service, and the online customer service will help you