This Other M21G battery Replaces:
This M21G battery Fits The Following Other Models:
for M22LG YM-M001 mobile 4G router WiFi
Features of Our Other M21G replacement battery:
Each Other M21G replacement battery unit is made of high-quality lithium-ion cells for longer last time.
The battery is up to standard and fully compatible with original specifications.
All our batteries are certified by CE, UL, ROHS, ISO9001/9002 as safe products.
The interface metal and fixed insulator of the battery are made of good materials to ensure stable current input and durability.

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Our prices are highly competitive and we offer frequent discounts and promotions to ensure that our customers get the best value for their money.
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Quality Guarantee:
We stand behind the quality of our batteries and offer a satisfaction guarantee on all of our products, so you can shop with confidence and peace of mind. 30 Days Money Back, 1 Year Warranty!
FAQs
Q: How to charge a new battery for Other M21G for the first time use?
A: New Other M21G battery pack is normally shipped in its partially charged condition. Please cycle your new M21G battery pack by fully charge and discharge it for 3-5 times to allow it to reach its maximum rated capacity before use. (Note: it is perfectly normal for a battery to become warm to the touch during charging and discharging).
New batteries are hard for your device to charge; they have never been fully charged and are therefore "unformed". Sometimes your device's charger will stop charging a new battery before it is fully charged. If this happens, simply remove the battery from your device and then re-insert it. The charge cycle should begin again. This may happen several times during your first battery charge. Don't worry; it's perfectly normal.
Q: The Other M21G battery has been installed several times, but device can't boot up?
A: Carefully check if interfaces of the device and the battery are correctly connected. If the cause of loose contact is ruled out, please contact the after-sales customer service to ensure that the battery part number and device model are matched.
Q: How to store the M21G battery replacement if you won’t use it for a long time?
1.It is not a feasible way for you either fully charge or fully discharge battery if long term storage. Security risks will generate if under a fully charged state, while both cells and control circuit protection lock will be deactivated if under a fully discharged state. So you’d be better store the Other M21G battery at a half fully charged state and keep it in a cool, dry place. 20 degrees Celsius is the optimum storage temperature.
2.Install and run M22LG YM-M001 mobile 4G router WiFi battery as often as possible(at least once a month) so as to ensure its availability and avoid power drain.
Q: How to extend the life of your Other M21G battery replacement?
1.Please fully charge your device before using it for the first time. Because the M22LG YM-M001 mobile 4G router WiFi battery replacement is normally shipped in a partially-charged state. Please cycle your battery pack by fully charge (more than 12hours) and discharge(less than 10%) for 3-5times to reach maximum rated capacity.
2.Please don’t discharge battery to 0%, which is the most common reason among faulty batteries. It will damage battery if the device usually works at a critical power level ( below 3%).
3.Charge the battery before it runs to 20%. It is scientifically justified that charging battery at 20% till 80% will extend battery life to the longest.
4.If your M21G battery won’t be used for a long time, please charge it once a month and keep battery power over 50%, remove it from your device and store it in an antistatic bag in a cool, dry place.
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