[SpEEdyBL]

You can parallel ni-mh cells when running them, but not when charging them. The problem is that the paralleled nimh cells may peak at different voltages. As soon as a nimh cell peaks, the voltage wont go any higher. Meanwhile, if one of the cells has not peaked and it's voltage rises above that of the other (peaked) cell, it (the non-peaked cell) will send current to the peaked cell, and over charge it. And because the non-peaked cell is sending current, it, itself will take even longer to peak. Sorry if this is confusing. It's late at night.