eneloopPro, AA/Mignon, Rechargeable Battery, Pack of 4, Capacity of 2500 mAh, Ready-to-Use Ni-MH Batteries, 500 Recharge Cycles, Plastic Free Packaging, Pro, Black

Excellent rechargeable batteries - high powered and arrive fully charged ready to use straight out of the packet. This is my second set, but not because my first set have worn out - they’re still going very strong (after several years duty powering a Shure P3RA wireless IEM receiver). Bought this additional set to power more devices. Thoroughly recommend these if you use AA batteries, along with the Eneloop charger 👍

I own a Sony U60 MP3 player that is great for recording and I use it often when out as I do not carry a smartphone out sometimes. It has ONE TOUCH record even from power off state. Excellent device despite its storage capacity, with only one flaw.These use a single AAA battery. Clearly these use a DC-DC converter to boost the 1.5V to something else say 5V. Leaves very little wiggle room for voltage drops. But rechargeable naturally have a lower voltage. Normal Eneloops barely lasted two hours in the player and when 'drained' in there still had a bit of use in a walkman before being fully actually drained. Normal Eneloops I have used extensively with very little issue in serious gear like A WM-D6C walkman, but due to the lower operating voltage and faster drain under high current load, it just wouldn't work for very long in this device. It is the FIRST time normal eneloops have failed me, as did other rechargables tested. I ended up using some Energizer ultimate lithiums in the player, getting 5 to 6 days of daily intensive use from a single battery, lasted an entire trip and i came home with capacity to spare. Helps those stay at 1.5V until the end of the discharge curve, so less current (Amps) needed due to the higher voltage. Normal Eneloops therefore prompt a battery change even in a single listening session. Not a flaw of the batteries, but the device by nature needing every millivolt from its 1.5V AAA battery.I reasoned that the Eneloop pros have thinner plates with more surface area and thus will provide more current and likely less voltage drop under load as this is what they are designed for. Would they work where all other rechargables failed?They did. They run the player for roughly 1.5 days of usage of 6 to 8 hours of play. Not as good as the Energizer Lithiums 30 or so hours (higher voltage meant less current draw), but I can use it for a day (or far longer in standby as it draws barely anything), put an Eneloop pro off the smart charger and take the second one to continue use. They perform flawlessly with this device. And it also works that I am not depleting the Eneloop Pros to 100 DoD, so using the Eneloop smart charger will protect the life of these. WARNING ADVICE: I WOULD NOT USE THEM WITHOUT A SMART CHARGER. A DUMB CHARGER WILL DESTROY THESE BATTERIES FAST DUE TO THE THINNER PLATES IF IT OVERCHARGES THEM! Normal Eneloops are far more rugged in this regard.I do not like using primary batteries due to the environment, unless i was going to be on a long off grid trip where the lithiums would make sense.I always bought and for most devices if they work well and the extra capacity is not needed Normal Eneloops as they are far more hardy, thicker plates and can last upwards of a decade of heavy cycling and low self-discharge. But when you need that higher operating voltage under load and ability to handle higher current draw, this battery solved an edge-case of a device that did not like most NiMH rechargables as the extra voltage under load and slightly higher capacity combined to make it a superb battery for this purpose.The interesting sidenote was the battery gauge, designed for alkaline batteries actually was close to accurate. Three bars for an hour or so, two bars for most then 1 bar with still enough juice for say 30 to 45 minutes of play. So its discharge curve in such a device will still give ample warning of requiring a battery change and not a sudden voltage collapse as the energizer lithiums will do in this use-case.In devices that only use a single AAA battery or in devices that need the highest possible voltage from your batteries under load (or if you need more capacity and do not mind 500 cycles over 2000+) use these. I personally would only use these in those power scenarios as I will always usually choose more cycles unless I need something like this.They most certainly got the job done.

Long lasting, value for money and good prize

A little more expensive than your average batteries but lasts long and it great for your smart/digital/computerised devices as it keeps the power going long and reliable. They pop in like any aa batteries and can be changed for multiple uses I am slowly converting all my batteries to this type of batteries they work a charm. Only negative it the initial cost

Last very well and charge quickly

The best rechargeable, low self discharge batteries.

Great long lasting

I have a Game Boy Color modded with an IPS screen. It wouldn’t work properly with the rechargeable AA batteries I had at the time (energizers, Amazon basics and no brands). After doing some research I thought I’d try these eneloop batteries. They solved the issues straight away and the Game Boy Color now works perfectly. I’m amazed that simply buying a decent set of rechargeables solved the problem. I’ll only buy these from now on.