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1. Before purchasing, please confirm your battery model again to avoid buying the wrong battery. Here is the basic information of our product.
Battery model: BV-T5C""
Compatible Products：Compatible For Microsoft Nokia Lumia 640
2. After replacing the battery, please consume all the power of the battery, then use the original charger to charge for 8 hours, and cycle the same operation 3-5 times to activate the properties of the battery to achieve the best use effect.
3. Please use the original charger and data cable to charge the battery.
4. Long term depletion or full charge storage can accelerate battery aging. It is recommended to keep the battery level within the range of 20% -80%.
A Suggestion to Increase Battery Life :
1. Do not over discharge or idle for a long time, the battery is easy to expansion.
2. Do not keep the battery in a low battery state for a long time. Charge it if the battery level is less than 20%.
3. Do not play with your phone while charging, as the battery life will be very short and unsafe.
4. Low temperature can make battery drum packs.
5. Do not use inferior chargers to charge the battery, in order to avoid damaging the battery.
6. Do not leave the battery in the charger for too long.
7. Do not disassemble or replace the battery structure.
8. Do not tear off the battery label.
