Originally Posted by Andrew Barr
The reason these cells exploded was due to fact that the users had failed to programme their chargers correctly. I know this for a fact. The delta peak was set too high on one occasion and the other times the charger was on a fixed charge time.
True, But you have failed to mention he was using a Temperature sensor. And when using a Temperature sensor it doesnt matter what value you use for the -ve Delta V as the Temperature sensor will stop the charge at a safe level. I noticed in the thread people all wanted to blame the bloke who owned the battery. No one would even consider it was caused by poor Quality cells.
When charging a set of flat cells at 6 amps the cell will ALWAYS trip the temperature sensor BEFORE the Zero Delta Peak Trips. Even at 1C they usualy trip the temperature sensor before fully charged. Assuming it is set to the recommended value for NiMH cells. Like around 50-51 Degrees C.
Besides that, Back several years no matter what you did to the batteries they never exploded Violently. They used to Vent Violently but not explode violently.
Charles