I have a two year old C9000 (code 0G0B01). It seems to work okay with AA batteries with only the occassional missed termination. With AAA batteries, however, it is 50-50. Last night I forgot to check it before going to bed and found it had forced 3150 into an 800 mah battery. Unfortunately, that isn't the fist time.
I bought this charger in particular because I liked the way the delta-V was suppose to work to ensure my batteries were fully charged (maybe slightly overcharged) every time. I knew I could charge the batteries for my flash and know I was getting max performance when the C9000 said Done.
After cooking another set of batteries last night, I returned to this board after being away for about a year and found that there is apparently a third firmware version that terminates charging at 1.47 volts instead of the delta-v.
I am considering replacing my current (firmware version 2) model with the new one to better protect my AAAs, but am concerned that doing so will negate the reason I bought the thing in the first place in that Done will no longer mean Done, but only Nearly Done.
In general, are people with the third version happier with it, or should I stick with my current one and just accept that my AAAs are going to get toasted every once in a while? Are there any other changes between the 2nd and 3rd versions I should know before I decide (besides the brighter screen)?