I have a Surface 3 & I think the battery has failed!
It will operate with the charger plugged in! But I need it to use it away from a power source!
I can't find the number of mHh it takes per hour to power it!
Is their a portable power supply I can purchase, that I can run it on until I get a new one?
Tully
You should be able to buy a Surface charger online. You can check some of your local places tech places as well. In the US, our Best Buys carry them.
This website says the internal battery is 28 Wh;
Battery Life - The Surface 3 Review
That converts to 5,600 mAh at 5 volts. Probably need to add some for battery charging, though, because I would assume power through the external power port would try to charge the battery.
https://www.amazon.com/dp/B01G1XH46M...subtag=WC67037
Sorry:
My mistake!
I should have said "Is there a portable device that I can charge off-line & use as battery backup?"
Tully
You need a 5V battery pack. There are many on the market, with a broad range of prices and capacities. They are mainly intended for smartphones, but if the Surface 3 original battery was only 5600 mAh (post #4), there are many with more capacity than that.
I wonder what it would cost to have the battery replaced? It'd be more in the line of a repair than a simple replacement.
https://www.ifixit.com/Guide/Microso...lacement/52684
Doesn't look like something I'd try myself, unless I was prepared to write off the Surface 3.
The 5V battery pack will only work if the surface is looking for 5V at the charge port. My guess is the Surface is like laptops etc and a lot higher voltage than 5V. And not a USB charging/power port like on a smart phone. If this is what your talking about? https://www.adafruit.com/products/1566
The reports I have seen, indicate the surface is glued together and not meant to serviced. Not by mere mortals anyway. lol.
I found this article at "Love my Surface" External Battery for Surface. If the battery isn't working, though, this approach may not help because it uses the battery as a "power buffer" of sorts. You may need to send it in to get it replaced, which I understand costs $400-450 for out-of-warranty Surface Pros. Cheaper to jump on the current Xmas specials and buy a new one for $500. Then you can give the busted one to charity and take a $200 tax write-off for "gifts in kind."
HTH,
--Ed--
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