More like 1900 mAh after 1 round of discharge/rechargeCustomer Rating:
Amazon ran a special on these in late June so I grabbed two 8 packs for 16 batteries altogether. Using my LaCrosse BC-900 charger to test all 16 of these batteries, every single battery has come out below the stated spec of 2000mAh. Low was 1850mAh, high was 1988mAh, average was just above 1900mAh.
I do not think it is acceptable to advertise 2000mAh, but supply 1900mAh. Had I payed full price, I would have rated these even lower. I understand that if I were to do several discharge/recharge cycles, that it would increase - but this seems pretty low for a first round. Perhaps it is normal for this type of battery - but if it is, the package should state that several rounds of conditioning are needed to attain 2000mAh.
EDIT: Thanks to some comments, I've learned that more than one round of discharge/recharge is necessary to attain 2000mAh. I'll post back details in a few weeks after I've done all 16 batteries, but here's initial results from an extra round of discharge/recharge with 4 batteries: average storage capacity increased by 40mAh, with the largest increases in the batteries with the lowest initial capacity.
My initial reaction was overly negative and upon reflection I should have rated these batteries 4 stars.
FOLLOW UP: After several weeks of slow discharge/recharge cycles using my LaCrosse BC-900 charger, I have the following to report:
All batteries were above 1975 mAh
Most required 3 discharge/recharge cycles to get there, though some went through 2 or 4 cycles.
Half were above 2010
Half were 2010 or below
The maximum was 2070
For those few batteries I did a 4th round of discharge/recharge, the gain was small. So three rounds of discharge/recharge get you (close) to stated specs, and beyond that the gains are likely to be small.
It's a bit of work, but here's a good way to do it. Just buy a whole bunch of batteries at once - say 16 or more. Do all the discharges/recharges as part of your daily routine for a few weeks. Then don't worry about it for a few years.
One last comment: I also own 8 Eneloops I purchased a few weeks earlier. I got very similar results with 4 batteries. The other 4 are in use on my kid's Kidizoom Camera - and after two months of light use the batteries show full! With the traditional rechargeable batteries, two months of light use uses up at least a quarter of the battery, as they lose charge fast even with no activity.