FP2 Battery Alternative - DIY replacement

[Jens1]

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1IPC/x/y/z on batteries and similar FP2 batteries

On the Fairphone batteries there is a small line with IPC. On the different FP2 versions there are different sizes mentioned, though both have the same size. Don’t trust this numbers totally. As far as I know that means: Version FP2-BAT01: 1icp6/44/62 Version FP2BAT02: 1ICP6/42/61 Measured; 65,5mm x 45mm x 6mm 1: It is one cell, 3,6V nominal voltage; some batteries for cameras have 2 cells in line, 7,2V ICP: Integrated Circuit Protection, the integrated electronics protects the cell(s) from…