Anyone know where I can find a quality replacement battery for the SP3? I have the screen off and would like to replace the battery before I seal it back up again.
Since it's such a difficult operation otherwise I don't think you'll find many people attempting to replace their batteries. (especially since any repair is a pain as I'm sure you know and you might as well buy another computer for the price MS charges)
I think your best shot is a reputable seller on eBay or if there's a site with a solid reputation that handles parts then maybe.
Replaced the battery on my Surface 2 last month. Got it on ebay. You will find the same replacement batteries there that are offered by any other sources.
It worked fine, came in at 40% charge and charged right up.
If you haven't found this you will need it https://www.ifixit.com/Guide/Microsoft+Surface+Pro+3+Battery+Replacement/51877