Hi guys , After a couple Hours at cleaning, reflowing/retouching corroted spots, and even repaired/reconstructed trackpad ribbon cable because the mouse was out, would not move. So NO NEED TO BUY NEW BATTERY OR TRACKPAD 
Long story short, im gonna attach photos of this little bugger that took me a while to find.
Please let me know specifications or datasheet to see if i can replace with somthing else, all suggestions are welcome.
By the way there is no shematic for the battery pack board 820-3503-A, had Shorts everywhere, so must've taken about 7 components that looked critical on its circuitry, i almost gave up.
anyways, any input is appreciated!

Long story short, im gonna attach photos of this little bugger that took me a while to find.
Please let me know specifications or datasheet to see if i can replace with somthing else, all suggestions are welcome.
By the way there is no shematic for the battery pack board 820-3503-A, had Shorts everywhere, so must've taken about 7 components that looked critical on its circuitry, i almost gave up.
anyways, any input is appreciated!
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