Needing help for almost dead gameboy sp?

[Nic]

Recently my GBA won't turn on for no reason. Takes about three minutes then it boots up. This problem started when I recently started to beat my Pokemon Yellow and Green. If it dies can somebody please give me a link to where I can buy a new battery? I know how to do it but not sure where to buy one.

 

[Tyeforce]

http://www.amazon.com/Replacement-battery-Game-Boy-Advance-SP/dp/B000M0H2IG

And it's under $5!

 

[Neko Yuki Pyrozanryu]

Go to my friends house and take his...
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