How is the battery connectors polarization?

Hey guys,

I want to try to "jump start"/revive my LG G2 D800's internal battery after it deeply discharged and can not be charged by the inbuild circuit anymore. (I am aware of the risks involved)

For that I need to know which is the + and which is the - connector on that thing though... does anyone know which side is which?

find a picture of the connector here:

http://goo.gl/W5Wy7n

I would have guessed that the side with the white arrow might be the + pole... but my guesswork has never been reliable.

Thanks for any helping thought!

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