Hello there I need some help please.

I have a MacBook Air 13'' i5 2013 (A1466) with 4 GB (820-3437-B logic bd) and is non functional from water damage.

I bought a used logic board 820-00165-A i5 4 GB in perfect shape here in Germany and the shop that sold it in the listing said it fits 2013-2014 13'' MacBook Airs and I googled about the board and found out its a 2015 model.

So I put the new logic board in as well as a new DC-in board and for the first time I saw the fan spinning and the screen working but with a low battery logo.

The MagSafe is plugged without a green light, when I try to power on the fan spins and the screen shows an empty battery with a thunderbolt symbol and then the screen goes off!

My questions are:

• Is this board compatible with my machine?
• Is my battery dead because it was sitting for maybe a year or two and that whats causing the problem?
• Why no green light?

Also the battery was empty so a power boost it so I got around 7.13 volts.

Any help would be great. Thank you