as far as dimensions go, is the 12 cell battery bigger than the 6 cell or does size not matter? What is the difference- 12 cell last longer when charged up? thxI plan on buying one for my Sony laptop (PCG-3B4L) and want to make sure it fits. DC 19.5 V, 11.1 v 4400mAhBattery-VGP-BPS13/S
The capacity of a battery pack is measured in mAh so as you have mentioned a 4400 pack will last X minutes on a single charge. A battery pack of say 8800 mAh would last 2 x X minutes (approx) per single charge. The lifetime of each would be similar The physical size grows dependent on the number of cells as will the weight so more cells more capacity more weight. All cells are not created equal. A really cheap battery probably uses cheap poor quality cells, use a USA based supplier with a warranty worth the paper its written on and you should be just fine. Sony charge a lot more than these guys. Check the link for one such USA based company.
Don't buy batteries unless its specifically made for your laptop model. Go to a sony showroom first and check. That way once its confirmed then only think about buying. Unless its a reputable generic brand they will be using low quality elements which will not hold its charge as well as premium batteries. 12 cell batteries last much longer then 6 cell. But it won't be 2x longer but maybe 1.5. Yes size matters.
