Hi, your very first post on CPF and then in this thread, my double welcome!
Yes, dV/dt delta peak sensibility (for NiMH/NiCd) and BattTemp threshold (for all chemistries) are configurable per user program, see my older post about options and parameter ranges. The two are program options, not global settings. In contrast, SysTemp threshold is a global quantity to protect the device itself (not the battery) from damage, e.g. on a hot summer afternoon.
From my experience, at typical loads good condition batteries don't get hot in the MC3000 neither during charge nor during discharge. That's because the bay metal contacts don't get hot from the internal system heat and because the batteries have low internal resistance. Heck one could even mimic MH-C9000's charging algorithm, i.e. 1.47V cut-off voltage plus top-off charge, which would never lead to warm batteries.
Q. Yoh man. What exactly do you mean with "typical loads"?
A. Yoh man. I mean that you don't operate the charger at its very extreme limits 24/7 at all times, or will you?
Q. No man, i won't. Yet could you specify, gimme some numbers for exemplification?
A. As a rule of thumb, the max. charging power is ~13W per slot, the max. discharging power is ~13W per device. They are called "full load".
A. I'd define a "typical load" situation as 30~70% of these operational extremes ymmv.
Well I Actually tried to register just to post in this thread, but then the username was taken, and then it turns out that I registered long time back but never posted
I'm actually dwelling whether to buy 3 hobby charger (bulky!) or this one once it's out.
When I charge my AA NiMHs using 1-1.5A, they do get quite hot, 40-50C, and in 50% of the cases they reach this temperature even before they trip 5mV voltage drop used to detect end of charge. That's why I use temp threshold to not cook them, so they terminate either on dV/dT or temperature. Some cells would even go to 60*C without tripping 5mV drop, happens when I forget to connect temp sensor. If you use too low current, not to heat the cells, then perhaps you will never get the dV/dT. So IMHO, for a dream charger, you would need temp sensor per cell.
So Just to be sure: is it possible to terminate charge of a single cell, if temp threshold for that particular cell would be reached?