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Here are the steps about how to fully charge the item:
1. Use the battery to 2% before you perform the next charge.
2 please turn off the fast charging option .
3. Charge it around 7 hours. Don't stop charging even it reaches 100% within 4 hours. Because the power percentage is programmed to original battery. So actually it doesn't get fully charged even if it shows 100%.
4. Fully charge performed until it shows the words like " FULLY CHARGED".
If you have more concerns about our product, just feel free to contact us.