I too....fall into the category of....one of the people who have had absolutely NO problems with my LaCrosse BC-900 chargers.
I have 2 of them, both purchased from Thomas-Distributing. They both have the v33 firmware in them.
I have used EVERY possible setting they have...and regularly charge 4 cells at a time using the 1000mA charge/500mA discharge rates. Warning - older cells can tend to heat up a bit at the very end of the cycle (true -deltaV). When they start doing that, I then drop down to using the 700mA charge/350mA discharge rates on those older cells. I also use the 500mA charge/250mA discharge and the 200mA charge/100mA discharge rates quite often as well, mostly on AAA cells.
I have caught a couple missed terminations, although they occurred using the lower charge rates on older batteries....definitely not a good combination.
I actually like my 2 Lacrosse BC-900 chargers every bit as much as my 2 Maha MH-C9000 chargers, although for different reasons.
Another thing.....
KEEP AN EYE ON NEW CELLS......at least for the first few (3-5 cycles). ALL NEW NiMH cells are subject to missing terminations during the first few cycles when using chargers that rely on -deltaV as their primary termination method. The -deltaV drop becomes much more pronounced after just a few cycles.
Yes.....even our beloved Eneloops and any other LSD cell too can suffer from this problem.
I've seen a few posts blaming the missed termination on low charge rates with new cells...quite true. When using low charge rates and new cells you are MUCH more likely to run into a missed termination. On a new cell definitely stick with the .5C - 1C charge rate, and even then....keep any eye on them.
FYI . . . . The biggest reason that you do not see missed terminations on the MH-C9000's is that it actually terminates using a set maxV point (1.47V - its supposedly secondary termination method) more often than it ever hits -deltaV (it's supposedly primary termination method). Although I did have a couple (out of well over a hundred or more AA cells) odd, off-brand cells that would hit -deltaV at 1.45V.
Maha was also having troubles with the -deltaV terminations, so they lowered the maxV so far (1.47V) that now, almost all cells tend to hit the set maxV point before they ever hit -deltaV. So the result is no missed terminations, but a slightly undercharged battery...even when compared to their other chargers that do actually use -deltaV.
Someone with a rev. F MH-C9000 may actually hit -deltaV much more than someone with a rev. G or H charger since the set maxV point was higher.
oo:. I have lost count of doing exactly what you have said. I also do a discharge before charging my cells.
