Project:Laptop Powerbank
From CoMakingSpace Wiki
| ProjectInfoBox surface pro 4 powerbank | |
|---|---|
| |
| Status: | in prototyping |
| Release Date: | jan 2019 |
| Initiator: | Luzian |
| Materials Used: | 18650 litium battery, BMS |
| Tools Used: | soldering iron |
| Approx. Cost: | ~35$ |
My dads daily driver is a Microsoft Surface Pro 4 and the NON removeable battery has lost some of its capacity over the years, otherwise it still works fine. So we want to build an external battery pack. The Surfaces powersurply delivers 12v dc, about the voltage you get out of an 3s Li-Po or Li-Io. I ordered a power plug for the Surface (it's a specical magnetic connector with support for a dock) an we conneted it to a 3s 3000mAh Li-Po. The laptop drained the battery all the way down to 10V, for us this means we won't need a boost converter.
Now I have to order 6 18650 cells and a suitable BMS.
