Can i buy a better battery

Question:To be specific on my laptop.....i have a 15.4 toshiba satellite a215-s7422. my battery life is only up to 2 hours and 30 minutes and i use my laptop to be on yahoo answers most of the time.does anyone know a better battery to buy and how much will it cost? Answer: they have different types of battery's with like 8 cells instead of 4 which give you a longer lasting laptop. if you go to a frys/best buy and so on. where they sell batteries you could ask them the differences and they will show you different ones just beware the better the battery the higher the cost which the quote "you get what you pay for" comes into play. you could get 2 cheap batteies or 1 good one that will out do both. Place is :http://www.mainec.com/ Hp: HP Pavilion DV780 battery , HP n6400 battery , HP F2024 battery , HP F2299A battery , HP Pavilion ZX5000 battery , HP Pavilion ZV6000 battery , HP Pavilion ZV5000 battery , HP PP2210 Series battery , HP PP2200 Series battery Toshiba:Toshiba PA3383U-1BRS battery , Toshiba PA3384U-1BAS battery , Toshiba PA3384U-1BRS battery , Toshiba PA3395U-1BRS battery , Toshiba PA3420U-1BAC battery , Toshiba PA3420U-1BAS battery , Toshiba PA3420U-1BRS battery.