I wasnt isinuating discharging your NiMH cells. I was just saying get a feel for when they quit or loose there punch then let up on them. I use the light bar to just test there times to see if they stay consistant over time. I do use the bar to drain the NiCD almost to total discharge then use a resistor till the resistor is cool. Had Sanyo packs a long time and there still perfect, they just dont last to long there only 1500's