Introduction
If your Amazon Fire HD 8 12th Gen is losing charge faster than usual, taking a long while to recharge, or not charging at all, you may have a faulty battery. This can be used to remove and replace your battery with a new and fully functional battery.
The battery of the Amazon Fire HD 8 12th generation has 13-hour life span before needing recharging. It has a 4750 mAh Lithium Polymer Battery. This battery is the source of all your power and capabilities of the device. If the battery is not working then the device is not working. The battery of your device should be lasting around 13 hours depending on how you use your device. The time it should take to fully charge your battery should be 5 hours.
Before beginning this guide make sure your device is turned off, not hooked up to any power source, and make sure to unhook the battery from the motherboard. For this guide you will need spludgers, opening picks, and some adhesive to keep the new battery in place. You will need to remove the back casing to get to the battery. Once you’ve reached the battery, start pulling on the adhesive tape just sticking out from under the battery. Slowly and gently pull the adhesive up until it is fully out. Now the battery is ready for extraction and replacement.
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Put picks around the corner and move them along the edge to pry the case off.
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Once there is separation between the case and the screen, place a pick in between the screen and on the corner of the back case.
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With the corners lifted, take the opening tool and pry each corner off.
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Repeat this for the corner diagonal from the initial corner.
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Once both corners are pried off, gently take the back case off the device.
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Slowly and gently, pull and remove the 3 adhesives under the old battery.
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Remove all 3 by pulling the adhesive, signified by a black flap with white adhesive. You will know it is removed when the adhesive has come out from under the battery and you are now able to move the battery.
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Remove the old battery from the device using the opening tool.
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If necessary, clean under your old battery and then insert the new battery with new adhesive to ensure the battery stays in place.
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To reassemble your device, follow these instructions in reverse order. Make sure you have applied new adhesive for the new battery placement to ensure it stays in place.
