the C9000 displays the DISCHARGED capacity after the refresh&analyze operation rtfm ;). the charged capacity is always (much) less and does not depend (much) on the charge rate. For example, Eneloop AAA rated 800mAh nominal capacity, refresh&analyze:
C9000 discharge at -200mA, "capacity" shown as 834mAh (after the discharge process), then automatic rest, then
C9000 charge at +400mA, "capacity" shown as 834mAh (=value taken from above!). however, when you observe the capacity (during the charge process) it only goes up to 768mAh (at 1.47V, then displays "DONE"), before it jumps to the screening of the "834" value.
If your Eneloop AA (rated 2000mAh) is new and the C9000 refresh&analyze ends with 1637mAh, then it's the discharge capacity at -500mA. The C9000 puts in maybe 1496mAh during the +1000mA charge process, observe it!
btw imho 1600-1700mAh are a little on the low side. you should get at least 1900mAh (=worst Eneloop production batch); it's guaranteed by original Eneloops. i got way over 2000mAh for my AA's, and way over 800mAh for my AAA's. Eneloop rocks! (the original ones, at least.)
Sorry if I've missed the answer to this somewhere, but is it *safe* to leave NiMh batteries charging unattended, as opposed to li-ions? My i4 V2 and first set of eneloops have just arrived, and I don't have eleven hours to babysit them, which is what I believe they require :\
yes. that's what i claimed. and i am telling the truth, always :)
the values dont improve with refresh&analyze (if your Eneloop cells are of normal quality). with normal old NiMH’s maybe they could get better but with Eneloops they dont. The Eneloop values stay the same. they may get better though after repeated extensive cycling with infradeep underdischarge and ultrahigh overcharge. this way i was able to expand the capacity of my Eneloop AAA’s and the enhanced capacity (up to 884mAh) might explain why i get such record-breaking runtimes. this is again no ***t telling by me, trust me.
i would do the break in (~2.0 days duration!!!) right away, no more fooling around at this point thanks.
I don't know that they will get much better. About the highest I've ever read is 2050. But none of them were below 1900. Your latest readings are right around the average for mine.
the highest i got was 2063mAh at my very first break-in (and i havent done any other break-in since!) and when you do refresh&analyze the number will stay about the same; typically it's a little less because you discharge with higher rates but sometimes it's higher lol.
what's the manufacture date of yours? (it's printed *on* the cell wrapper!!)
i would give them some good use from now on (flashlights!!), e.g. in the high-amperage draining cletus P1A or P2A. Eneloops seem to like it when they get some good use (high discharge rates, high recharge rates, frequent use), i think it's called conditioning. And then after 10 cycles do a refresh&analyze again.
take the following table as reference:
In other words ezarc, YES, please do a refresh&analyze right after you're done with the break-in :)
Its affil link. I have 10$ gift card from DD and this would seem like a tempting deal on getting 4 Eneloops for less than 6$. Even if thy are only 1st gen one.
What do you think?
EDIT: Judging by product pictures its 2nd gen. I guess Ill have to ask them to be sure.
Real? I think nobody knows. Unless someone actually bought them, who can say more. You might have to wait 6 weeks, and receive a gift card when they are fake.
Yeah, so far it has been flawless with DD for me, so Im not affraid of receiving fake ones and then losing my money, BUT still, they should be genuine if sold as such.