1500mah Battery from SG1 work with this phone?

[SyntaxError]

Being the so called "geek" around these parts, people often bring me their busted or otherwise misbehaving phones to work on (reset,root,etc.) but sometimes I can only do so much and end up with quite the collection of misfit devices.
Well I have acquired two Samsung Galaxy S1's with otherwise still operational batteries. They look very similar (albeit thinner) to the 1800ish battery in the S2 that I currently use.
Not wanting to add another device to my pile, could I, or has anyone else tried to use this as a backup battery in an S2 yet? other than lower battery life duration I see it as a viable backup plan.

Thanks,
Syntaxerror

 

[kevincott]

Saw this question before, no.

 

[alpha2k]

no. They are different phones, just the same company, but they probably use different voltages and such. I wanted to use my warp1 battery in my sequent, but sadly it's not an option, they are simialr phones, but different hardware/voltages etc..