YBWF Original Co. sell original parts direct from factory of OEM manufaturer. 1) All the battery are original with full polymer lithum ion cell which give you nonstop backup. 2) It is a replacement battery with complete mAh compatible to its respective brand" TROUBLE SHOOTING TIPS - Please use an original charger to charge your mobile, other than original charger can affect your battery and mobile drastically. Check if there is any dust in the connector or if any pin is broken or not. Also check for any corrosion in contact and plug. Clean the plug using IPA or swabs. Make sure you use ESA safe ----- only check the interface connector to see if there is any dust or not. If there is any dust then clean or replace the interface connector as required. If the problem is not solved then update the software/operating system (os) to the latest version. THE BATTERY INSTRUCTIONS: Please drain all the power of the battery for the first 5 times before charging, and then take a full charge. Thus the battery can be reached the optimum effect of using. Please note that its full effect and longevity is only achieved after 3 to 5 complete charge and discharge cycle because Li-on Battery become stable after few uses.
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