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laptop become unusable when the battery reach 10% CPU speed go down from 3GHZ To only 0.20

That is entirely normal. Lack of battery charge triggers the CPU to slow down.

In many cases, 10% sends a critical battery charge warning - apparently not for your machine.

Plug the machine in a start charging.

Is there a charging issue?

You risk sudden shutdown, losing data, at such a low level.

Continued deep discharge followed by charge can also damage the battery leading to very early battery replacement. This is an expensive way to run.

laptop become unusable when the battery reach 10% CPU speed go down from 3GHZ To only 0.20

That is entirely normal. Lack of battery charge reduces the power available to run the laptop and should cause a speed step slow down for the CPU to continue to operate.

In many cases, 10% sends a critical battery charge warning - apparently not for your machine.

Plug in the machine in order to start charging.

Is there a charging issue?

You risk sudden shutdown, losing data, at such a low level.

Continued deep discharge followed by charge can also damage the battery leading to very early battery replacement. This is an expensive way to run.

laptop become unusable when the battery reach 10% CPU speed go down from 3GHZ To only 0.20

That is entirely normal. Lack of battery charge triggers the CPU to slow down.

In many cases, 10% sends a critical battery charge warning - apparently not for your machine.

Plug the machine in a start charging.

Is there a charging issue?

You risk sudden shutdown, losing data, at such a low level. Continued deep discharge followed by charge can also damage the battery leading to very early battery replacement. This is an expensive way to run.

laptop become unusable when the battery reach 10% CPU speed go down from 3GHZ To only 0.20

That is entirely normal. Lack of battery charge triggers the CPU to slow down.

In many cases, 10% sends a critical battery charge warning - apparently not for your machine.

Plug the machine in a start charging.

Is there a charging issue?

You risk sudden shutdown, losing data, at such a low level. 

Continued deep discharge followed by charge can also damage the battery leading to very early battery replacement. This is an expensive way to run.

laptop become unusable when the battery reach 10% CPU speed go down from 3GHZ To only 0.20

That is entirely normal. Lack of battery charge triggers the CPU to slow down.

In many cases, 10% sends a critical battery charge warning - apparently not for your machine.

Plug the machine in a start charging.

Is there a charging issue?

You risk sudden shutdown, losing data, at such a low level

laptop become unusable when the battery reach 10% CPU speed go down from 3GHZ To only 0.20

That is entirely normal. Lack of battery charge triggers the CPU to slow down.

In many cases, 10% sends a critical battery charge warning - apparently not for your machine.

Plug the machine in a start charging.

Is there a charging issue?

You risk sudden shutdown, losing data, at such a low level. Continued deep discharge followed by charge can also damage the battery leading to very early battery replacement. This is an expensive way to run.