GP Batteries NiMH AA/LR6 1.2 V 2050 mAh ReCyKo+ 4-Blister

I purchased a set of GP Recyko+ NiMH Pre-Charged Rechargable AA Batteries back in Nov 2010. Initial testing, using my La Crosse BC1000 Battery Charger/Analyzer, showed that they have an average capacity of 2228mAh, or 6% higher than rated capacity of '2100mAh'. (Note that on the package it says "Min 2000mAh, typ 2100mAh").At the time, this was the highest capacity I measured among all low-self-discharge AA cells. Over the past few years, I have found other LSD cells with even higher capacities, including:- IMEDION AA 2400 mAh low self-discharge batteries (measured capacity ~2450mAh)- Panasonic eneloop Pro (rated 2550mAh, measured ~2600mAh)- AmazonBasics High-Capacity Pre-Charged Rechargeable Batteries and Duracell 'Ion Core' AA Rechargeable Batteries (both are rebranded eneloop Pro cells)However, the GP Recyko+ is still a very good value since it can often be bought for much lower cost. As of this writing, for instant, the unit price of this GP Recyko+ AA batteries is just 50% that of eneloop Pro.[Self Discharge Rate]I have tested a set of four GP Recyko+ AA cells after about 3 years of storage. I’m delighted to find that their long term charge-retention rate is as good as that of eneloop cells:- One pair of GP Recyko+ AA cells was tested after 33 months of storage. The average remaining charge was 1681mAh. This is 75% of measured original capacity, or 80% of the rated capacity (2100mAh).- Another pair was tested after 41 months of storage and gave an average charge of 1602mAh. This is 72% of measured original capacity, or 76% of rated capacity.Just for reference, Panasonic claims eneloop can maintain 75 percent of their charge after 3 years of storage at 20 degree C.[Physical Size]There is one caution I need to make: Those GP Recyko+ AA cells are slightly thicker than eneloop AA cells (which are already thicker than ordinary alkaline AA cells). So they may not fit in appliances with extremely tight battery compartment (such as my Microsoft Wireless Notebook Mouse). This is a common problem with rechargeable NiMH cells in general. Therefore you should try those for size in your intended appliances, before committing to a large quantity of them.[Bottom Line]The GP Recyko+ batteries start out with higher capacity than regular Panasonic eneloop cells, and self-discharge at the same rate. Therefore I consider GP Recyko+ a great low-cost alternative to the better known Panasonic eneloop.

Seem to work ok but GP batteries are not what they use to be. They a swelling after recharge # 10