So, last year I got this set of Duracell LSD rechargeables from Boaz. Deep joy! Performing so well and all showing around 1.980-ish mAh when I first received them. Over the time and numerous times of re-charging, they became even better so, much better indeed!- averaging around 2.250 mAh, O Dear.
Now, over a year has passed, and last week I decided to cycle them once more (for the third time, for the record) - and while three of them are between 2.3 and 2.4 Ah, one now peaks at 3.3 Ah. Can this be normal? I mean, over 3.000 mAh… and yes, they all hold their charges well, and none of them heats up considerably during charging. Should I be worried over this enormous growth of capacity?
using a BC700, I ran a complete discharge/charge cycle. The highest reading I got from my eneloops was 2.900mAh on a few cells, most are around 2.200 - 2.700mAh.
The set of duracells used to charge to 2.200 consistently
This Boaz you speak of.... seems like a wonderful guy :P
I'm pretty sure they aren't duraloops... rather durabrids,,,aka rayovac hybrids ?? duracell lsd black top vs. white .
They are chinese vs. the duraloops made in japan ... I only had a few packs of these . I think the word on the street was that rayovac batteries aren't that good ..so either you are absolutely blessed or it's about to explode ....or fail ..Either way i'm absolutely interested .
the end of charge detection may be off, but also the charger can’t calculate charging efficiency, according to wikipedia NiMH batteries are 66% charge efficient so in theory for every 1 amp you put in 0.66 amps are being stored (and presumably 0.33 amps are wasted as heat)
Nah, those numbers must be charge mAhs. The other day I charged my old and used Panasonic AAA (500 mAh original capacity) ~200mA to almost 3000mAh :bigsmile: Those 3000 are mAhs charger sent to batt. If I discharge them ~100mA, they will give me 50-80 mAh at best. Anyway, they are still good enough for my wireless keyboard
No, man, they are old, abused and not LSD :bigsmile: (retired batts from my wireless phone, so working 24 hours/day last… 4 years maybe). Charged them for more than 14 hours at 200mA :bigsmile: (done a discharge then, and lately, I’ve charged them at 500mA for half an hour, -dV kicked in I think).
To sum up: best charged at .5-1C (so you can benefit from -dV termination)
I’ll keep you all posted, but so far they are behaving well. While they saw a lot of use from mid-to late 2011, they now usually stay in their little nylon pouch in my laptop bag, and regularly see use as backup cells for whichever of my double-AA EDC torches, once a month.
Just like my Sanyo Eneloops, they take around one full day to charge @ 200mA. Just like the eneloops, they drop to 1.35V after a week of storage, and still show 1.32V after about several months of sitting, whilst still performing just as well; making for one happy sixfink.
Performing so well and all showing around 1.980-ish mAh when I first received them. Over the time and numerous times of re-charging, they became even better so, much better indeed!- averaging around 2.250 mAh, O Dear.