Brand New VIVO B-77 Li-ion Battery. This VIVO B-77 battery is compatible with the VIVO Y31. Each VIVO B-77 Cell Phone battery carries a full 1 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.

Brand: VIVO Battery
Type: Li-ion
Capacity: 2100mAh/7.98WH
Voltage : 3.8V
SKU : 22LK242_Te

Replace Cell Phone Batteries part number :

B-77

Compatible with the following models :

For VIVO Y31

online store

SG: VIVO B-77 Cell Phone Battery
AT: VIVO B-77 Handy-Akku
IT: batteria del cellulare VIVO B-77
FR: batterie de téléphone portable VIVO B-77
NL：mobiele telefoon batterij VIVO B-77
DE：Handy-Akku VIVO B-77

https://www.battery.org.uk/product/Vivo/B-77/184929.html

VIVO B-77 Cell Phone Battery Instruction Manual

1. let the power of the VIVO B-77 batteries (15%) drain to 0% When you use your brand new Battery first time. And then full charge it(usually charge it full 12 hours) and let it drain to 0% again. Do this for 2~3 cycles.
2. If you have a nickel-metal hydride battery, completely drain and recharge the VIVO B-77 Cell Phone battery once a month to maximize its capacity to hold a charge.
3. Don't leave your computer plugged in constantly when it is not in use. If your computer always relies on this power, it will loose its ability to last long on its own. So always charge your computer when the VIVO B-77 battery is almost dead and then unplug it from the wall.
4. If you have two or more battery pack of B-77, it's wise to discharge and then fully charge it on battery power once a week or so, just to keep the battery fresh conditions.
5. Keep it cool. Do not expose the B-77 battery to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can't create as much power.Overheat is damaging harmful for you Cell Phone battery, so it is wise to remove the Battery from a Cell Phone when it has been fully charged.
6. If you do not use your VIVO Cell Phone for extended periods of time (a week or more), remove the VIVO B-77 battery pack from the Cell Phone .

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B-77 Cell Phone battery for VIVO Y31