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I have used these batteries for several years in a Bluetooth mouse with my desktop computer with excellent results. Longevity is reasonably good. I typically use the mouse 4-6 hours for 3-5 days per week. Under this type of usage, I usually have to recharge the batteries every 6-7 weeks. Of the various brands of rechargeable batteries I have tried, I have found the Eneloop batteries to be the most reliable and long lived.
Every time I recharge and reuse these batteries I send out a “Woop Woop” into the Universe, because they work well and I'm helping to reduce the gazillion tons of batteries that are tossed into the trash. I have lots of flameless candles and lanterns around my home and these batteries do the job.
These batteries hold more power and last longer than other rechargeables. Even in cold conditions, voltage doesn't drop much. I bought my first Eneloops about 10 years ago, and they are still usable. Hope these new ones will last as long.
These batteries arrived in an opened package, they were used and they were completely discharged. The description stated the batteries were new and would be fully solar charged at the Panasonic factory. This was not true. I returned these batteries.