I have an m5310 and i have troubles with the battery charge i bought a new battery but is still the same , i plug the notebook to the ac power and batery start to load (the front green light is on ) after a few minutes this light start to flash (very low batery power) and even i leave it plug in to the ac power the batery dosen't charge

Is the cord and Battery the EXACT same power spec? If so, it may be the AC jack in the Laptop has been damaged due to pulling on the cord while plugged in, broken connection.

HI,

I strongly suggest you to replace it with a new battery.

Could be the Ac -DC adapter is faulty .
Suggest taking laptop to where you bought it and asking if they can check it with a different Ac-DC power adapter .

Try updating the latest BIOS from the Acer Website.

This is possibly an internal power Supply fault. take the battery out, plug in the adapter, IF the unit works now, you have A: A battery problem, or B: a charging circuit problem. If the unit still fails to work, the power supply in the PC has faulted. You need to get a "Quote: for a repair.

I have a new gateway laptop with windows 7 and today it said plugged in not charging 8%. I tried everything and nothing worked so I turned it off and unplugged it and took the battery out and put it back in and it started charging...hopefully this works.

I would try replacing your ac/adaptor (power plug) before troubleshooting any further. It sounds as if the adaptor is faulty. Check eBay, you can get a replacement for less than 10 dollars.

If the computer is connected to an electrical outlet, the light operates as follows:

• Solid green: The battery is charging.
  
  
• Flashing green: The battery is almost fully charged.
  
  

If the computer is running on a battery, the light operates as follows:

• Off: The battery is adequately charged (or the computer is turned off).
  
  
• Flashing orange: The battery charge is low.
  
  
• Solid orange: The battery charge is critically low.

Looks like the AC adaptor is faulty.

A common problem is for the power jack connections on the system board to go bad. They break loose from the main board because the power plug gets flexed and then the power doesn't get from the adapter to the board. No power light (or intermittent flickering) and no battery charging results.

What you need to do (or have done) is to resolder the power jack onto the board. This isn't difficult, but it involves getting the main board out to reach the solder side. In some cases the board can be damaged because of the bad connections and isn't repairable. Then the board needs to be replaced. But most often the soldering fixes the trouble.

Both batteries could be dead. But if you bought a new battery, it's unlikely. I don't know what green light you see, but if it's on the power adapter, it just means it's turned on--not that it is charging.
Two possibilities: Your power adapter is bad or the motherboard is bad. Because you say the computer works if plugged in, then you have ruled out the adapter.
You should be checking/cleaning the battery contacts and if all else fails, going for a new motherboard.