I have an old laptop that uses a SLA Battery and I'm wondering what sort of circuit would be need to convert the charging circuit for NiMH Cells.
Many manufacturers were able to do some time ago but that information has been lost. The Replacement NiMH Battery had two 6v banks and the computer will output 7.5v to the battery when charging. So I assume I'd need two 45C temperature cutoffs (one for each bank) and also a boost converter to a voltage regulator and then a NiMH charging circuit but I can't find a circuit that will allow the same input and output since the battery only has 2 terminals.