Acer 722 netbook - battery fluctuation?

Hi all,

Just bought an Acer 722 off Amazon. I had the option of buying a 3.5 hour battery, or a 7 hour battery - I got the latter.

After charging the laptop, it shows:

100%: 3 hours 50 minutes

When it depletes, it goes:

93%: 3 hours 33 minutes

91%: 3 hours 59 minutes

Now I understand that as a new battery, it's going to fluctuate. What I'm wondering is - did I get the 3.5 hour battery, rather than the 7 hour battery? Not really sure how to check it, and the fact that the fluctuations are happening around the 3-4 hour mark are concerning me.

(As a side-note, I can't get YouTube videos to work smoothly using Chrome/Flash11. Any alternative Flash player that works?)

 

here are the 2 different batteries


24.4 W 2200 mAh 3-cell Li-ion battery pack
48 W 4400 mAh 6-cell Li-ion battery pack


get a program called battery bar it will tell you the batter mAh if its the higher one then you got the latter

 

It is the higher one Should I let it deplete completely and then recharge it? Would that help it calibrate?

Also, is there a 9 cell to give me a bit of a boost?

 

it would and 4 hours rated time for moderate use is very good.

7 hours probably was on pwoer saving with wireless off.

you could probably get 7 hours with moderate/heavy use with the 9 cell attery

 

OK, good to know.

Could you link me to a 9-cell battery that would be compatible with this? I'm rubbish with this! And I'm too scared to buy an "unofficial" battery, haha.

 

9-Cell Battery For Acer One E100 522 722 Happy2 AC700 AC761 P0VE6 POVE6 PAV70 | eBay

Tjis is actually 7800 so its about a 70% increase in life.

Dont worry about unoffical batteries unless they re DIRT cheap then dont trust them.