Will not charge - has not been used in a very long time

Are u using an proper Apple charger and plug while charging it

Are you using the supplied Samsung charger? Many times if your not using it, the tablet won't truly charge.

If you charge the device fully, meaning 100%, and while using it with a simple app it doesn't last 2 hrs. then you need to replace the battery. Next time it goes dead, don't turn it on, instead plug the charger and let it charge to 100% while the device is off. Once is fully charge, use it as you would normally do. But still,it needs a new battery.

bad charger

If you need further help, I’m available over the phone at https://www.6ya.com/expert/thomas_9f23c57b7a2fc8ff

Lithium ION batteries are usually rechargeable. The use mode for these batteries is that there are a set number of recharges that equate to the life of the battery. Usually that life is approximately 1,000 charges.
If you use your battery to 50% then recharge, you can do this ~2,000 times. As the life of the battery is used up, the maximum charge lessens which means where you may have had 8 hours of play time when the battery was new, you will only have 6 hours as the battery life is used up.
In order for a Lithium ION battery to recharge there must be at least a small amount of charge left as a "seed" for that recharge. If you drain a L-ION battery down to zero, it may never recharge again or the max charge will be reduced to an insignificant amount of the original full charge. eg instead of 8 hours you may only get 15 minutes, or 5 minutes, or no minutes.
You are much better off recharging when 50% depleted than using it up til your product stops.
L-ION batteries cannot be repaired only replaced. Most cheap products using L-ION batteries cannot have their batteries replaced.

Lithium ION batteries are usually rechargeable. The use mode for these batteries is that there are a set number of recharges that equate to the life of the battery. Usually that life is approximately 1,000 charges.
If you use your battery to 50% then recharge, you can do this ~2,000 times. As the life of the battery is used up, the maximum charge lessens which means where you may have had 8 hours of play time when the battery was new, you will only have 6 hours as the battery life is used up.
In order for a Lithium ION battery to recharge there must be at least a small amount of charge left as a "seed" for that recharge. If you drain a L-ION battery down to zero, it may never recharge again or the max charge will be reduced to an insignificant amount of the original full charge. eg instead of 8 hours you may only get 15 minutes, or 5 minutes, or no minutes.
You are much better off recharging when 50% depleted than using it up til your product stops.
L-ION batteries cannot be repaired only replaced. Most cheap products using L-ION batteries cannot have their batteries replaced.

Lithium ION batteries are useusally rechargeable. The use mode for these batteries is that there
are a set number of recharges that equate to the life of the battery. Usually that life is
approximately 1,000 charges.
If you use your battery to 50% then recharge, you can do this ~2,000 times. As the life of the
battery is used up, the maximum charge lessens which means where you may have had 8
hours of play time when the battery was new, you will only have 6 hours as the battery life is
used up.
In order for a Lithium ION battery to recharge there must be at least a small amount of charge
left as a "seed" for that recharge. If you drain a L-ION battery down to zero, it may never
recharge again or the max charge will be reduced to an insignificant amount of the original full
charge. eg instead of 8 hours you may only get 15 minutes, or 5 minutes, or no minutes.
You are much better off recharging when 50% depleted than using it up til your product stops.
L-ION batteries cannot be repaired only replaced. Most cheap products using L-ION batteries
cannot have their batteries replaced.

The charger has a function that restores the battery operation parameters by discharging then charging the battery a number of times. Refer to charging instructions in the pack but I think the cycle is a 3 hourly one, time to charge from a full discharge. If the charger thinks the battery is dead then it will try to recover the battery using this process. You may have left the charger on long enough to charge then also discharge the battery.
Start again and charge for the time in the instructions ONLY, if you are not sure of the time try it for an hour, then without disconnecting the charger turn the unit on and take particular note of any screen messages, if any.
You should be able to continue as normal now, but still be aware of the time you are leaving the charger connected for, as it may take some time before it returns to normal operation and stops trying to recover what it thinks is a dead battery.

The battery on the Asus does take a very long time to charge (over 12 hours before you use it the first time, then 8 hours or more each time). It takes even longer if you charge it from the USB port in a computer rather than connect it to its dedicated charger, or if you use it while it's charging. If you've already charged it for 8-12 hours, try turning it on by pressing the power button *and holding it down* for a couple of seconds before releasing it. Then, when using the tablet, try keeping it hooked up to the charger when possible, or at least recharge it overnight.

You can check on battery charge by tapping "Settings" at the bottom of the Home screen, then tap "Battery" in the Device category. The % charge will be at the top of the screen. I enjoy my Asus tablet, and it's good for several hours at a time between charges, but you do have to keep it charged up. Good luck!

So, greyhen2, we meet again. Here's the answer I gave to your other posting of this same question:

The battery on the Asus does take a very long time to charge (over 12 hours before you use it the first time, then 8 hours or more each time). It takes even longer if you charge it from the USB port in a computer rather than connect it to its dedicated charger, or if you use it while it's charging. If you've already charged it for 8-12 hours, try turning it on by pressing the power button *and holding it down* for a couple of seconds before releasing it. Then, when using the tablet, try keeping it hooked up to the charger when possible, or at least recharge it overnight.

You can check on battery charge by tapping "Settings" at the bottom of the Home screen, then tap "Battery" in the Device category. The % charge will be at the top of the screen. I enjoy my Asus tablet, and it's good for several hours at a time between charges, but you do have to keep it charged up. Good luck!