The icon for the battery with a red x is a sign this device is inactive or has a noncharging icon. This icon only shows up only on Samsung Tablets as well as other mobile devices in the event that the wrong charging device is used. Samsung tablets can tell whether the charger is an original Charger, and if not, restrict the power of the charger and show the icon that says not charging as well as the icon for battery, with the red icon with the X.

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The tablet then fails to charge due to the insufficient power or amps that the charger is able to provide. If Samsung detects and blocks an original charger, the charger will be able to supply 0.4 (or 0.5 Amps of power. Normal chargers provide around 1.35 Amps of power and can charge tablets perfectly. To compare, your regular computer’s USB 2.0 ports supply around 0.5 Amps of power.

For a solution to the Samsung tablet charging issue using Red X you simply need to purchase a Genuine OEM Samsung tablet charger that is compatible with the model tablet. If you’re using a brick charger that isn’t from Samsung like the one mentioned above Samsung tends to restrict the power available, most likely to protect your personal security.

Some other things you could test:

Try one of these suggestions options to try and fix the issue. However, buying a new charger is a good way to solve this issue:

1. Reboot the tablet. Do this by pressing long on the power button and turning it off, then turning it back on.

2. If you’re using the original charger, make sure it is operating properly and the USB cable is free of breakages or shorts in the wires within the cable, which can hinder charging.

3. If you know someone who has a similar device, you can confirm that it’s the cable or charger by taking their charger.

4. If you own a battery bank you can connect it to the USB end to try charging via that, and see if it can be used as a solution.

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