Samsung Galaxy Tab A8 Battery Doesn't Hold Charge

The Galaxy Tab A8 uses any standard USB Type-C charger. The charging port is a USB Type-C 2.0 port.

• If no pins appear to be broken on the inside of the charging port, cleaning out the charging port itself may return the device to a functional state. Something non-metallic is best suited for the job, as metal pieces may detach/break pins in the charging port. Compressed air may dislodge loose debris, however stubborn debris may require a non-metallic item to remove, such as a wooden toothpick. Care is advised in the latter scenario, as breaking a toothpick inside the charging port may further damage/block the port.
• If debris has been ruled out as the cause, it may warrant replacement of the charger/charging port. If a brand new charger isn’t providing sufficient charge after debris has been removed, the charging port is likely the cause. There are multiple DIY replacement kits available on popular websites such as Amazon, in which case the above specified charging port will suffice to replace the old port.

Higher brightness levels consume more battery life than lower ones.

1. Go to settings, then display.
2. Locate the box labeled brightness along with a sliding bar.
3. If the bar is all the way to the right side, slide it more to the left to lower the brightness. Reducing the brightness of the screen will also reduce the overall battery consumption, and in turn will increase the battery life of your device.

Devices often struggle to keep multiple applications open and running at once. The increased workload of multitasking drains battery life at a heightened pace.

• Check what apps are open:
  1. Go to Settings > Display > Navigation bar.
  2. If it’s “buttons”, tap the icon with 3 vertical lines in the bottom-right corner. If it’s “swipe”, start swiping from the bottom of the screen and hold for a second until a list of your current open apps shows.
  3. Either close each app individually by swiping the open app screen up, or select the “close all” option to close all your apps.
• Put any unused apps in deep sleep, as this will keep them on your device but not use power to operate.
• Check mobile data usage:
  1. Go to Settings > Apps > whatever app you choose > Battery.
  2. Change the setting to either “Optimized” or "Restricted" to reduce battery usage for that app. You could also select the “Mobile Data” setting instead of “Battery” and deselect “Allow background data usage” to minimize data processing in the background, further reducing battery usage.
• Check other battery usage settings:
  1. Go to Battery and device care > battery.
  2. Go through each setting to improve your battery life and prevent excessive battery drainage.
• If needed, delete any unnecessary apps that may be affecting battery usage negatively.

If you’re still experiencing problems, it may likely be that your battery has aged, and has degraded over time. All lithium based batteries experience this, especially if recycled or exposed to excessive heat. If your device is still having trouble charging, or won’t charge/turn on at all, your battery has probably reached the end of its life, and is in need of replacing.

• If you notice your battery is swollen, puffy, or corroded, check these[hyperlink] instructions first and then click here[hyperlink] to see a battery replacement guide.
• If at any point, the battery gets punctured or begins to ignite, it is advised not to pour water on the battery. Doing so can worsen the situation. ABC dry chemicals, extinguishers marked as class B or D, or a specialized lithium-fire blanket will suffice to quell the situation.

If all else fails, the motherboard is likely the issue.

• Replace the motherboard.