Replacement for APPLE M9421 laptop Battery(4400mAh)

APPLE M9421 Battery Tips:

When your get the APPLE M9421 Laptop battery, please read the following sentences first, for they may give you some tips to prolong the lifetime of M9421 battery for your APPLE laptop!

• 1. Make sure you get the correct type of battery before it's fixed, otherwise the mismatched battery may destruct your laptops.
• 2. When you receive the new APPLE M9421 battery, please don't be hurry to use it immediately, erenow your APPLE M9421 battery may require for three to four charge/discharge cycles before achieving maximum capacity.
• 3. Don't make APPLE M9421 laptop battery short-circuit, dropped, pinched, and exposed to& immersed in the water.
• 4. Keep your battery for APPLE M9421 away from fire and other excessive heat sources to prevent it from explosion.
• 5. Don't press drop and burn the battery for APPLE M9421.
• 6. When you don't use power supply for M9421, keep it in a cool, dry and clean place.
• 7. If finding any leak or deformation, please stop use your APPLE M9421 laptop battery, you should get a new one for the sake of your laptops.
• 8. For it's self-discharging, don't be worried about this natural phenomenon. Just need to make the APPLE battery M9421 in a fully charged status and it's necessary to fully discharge and then fully charge the M9421 APPLE Battery every two to three weeks.
• 9. It is normal for your APPLE M9421 replacement battery to become warm when charging or normal use. But if it is getting too hot, there may be something wrong with the device, please remove it and ask help from our qualified personnel.
• 10. New APPLE M9421 battery is sometimes hard to be charged. Your electronic device may indicate a fully charged condition for about 10 to 15 minutes when a new battery pack is being charged for the first time. When this happens, remove the battery pack and let it cool down for a while. Repeat the charging procedure again. When a new APPLE M9421 battery is unable to charge, it is suggested to remove the battery from the device and reinsert it for several times to wake up dormant cells. Occasionally, BIOS updating is required to make the battery work normally on your device.
• 11. More useful info about APPLE M9421 laptop rechargeable battery in Battery tips.