| Because original bat of sl45 is too expensive (about 25 usd) in my country and often difficult to find and buy, we can modify a Nokia battery (popular) for it. I chose Nokia, BL-4C for 6100, 720mAh, 3.6V (about 7usd).
Steps:
- Remove original sl45 battery from cover, then using knife to cut back side in order to unbind orignal cell. Note that: cut pole (negative and positive), don't remove the fuse and IC on small board.
- Nokia 6100 battery: remove IC and fuse on head (I try keep them, no problem), keep the cell.
- Solder cell 6100 to small board of original sl45 battery with corrected pole and put 6100 cell into the sl45 cover.
Effect: Standby and call time more longer. |