Where to buy AS1410 4400mAh 11.1V Battery

I understand and aware of all that. I do need an extra battery so I can use my 1410 without plug in during the day.
FWIW, here's the best one I found so far. Cheap UM09E31 11.1V,10.8V,6 cell 9 cell Laptop Batteries,battery for ACER UM09E31 Just ordered it. Will see how it goes. The best part is the 6600mAH.

 

please post if it first..... or not

 

I completely understand that I am ignorant about this, which is why I am looking for help. I have an Acer AS1410-8913. I have the UM09E71 11.1V 4400mAh 6-cell battery, which now lasts me less than 4 hours. Reading through this thread (which may not even be monitored anymore), I haven't seen anyone mention this particular battery. Is the UM09E31 a match for me? This is the battery that comes up when I search for mine on this site:

UM09E31 UM09E32 battery|acer UM09E31 UM09E32 battery|UM09E31 UM09E32 batteries for Acer Aspire AS1410 AS1410-8804 AS1410-8000 AS1410-2039 AS1410-2039 from battery-noebook.info

Any guidance will be greatly appreciated! Thanks!

 

I would suggest to take the bigger model and you may find it cheap here; I took the 6600mAh model 5 months ago and I am very satisfied.

 

Can you give us an idea of how much larger the battery is physically (size and weight)? Does it protrude much?

Thanks