eneloop pro

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. Update: I bought four more AAs, had them in a walkman for a year then used in a Honeywell portable fan, and it ran the fan for 7:30 to 8 hours non-stop during the heatwave (I wanted the longest possible runtime). They don't self discharge fast, and have worked to keep the fan on standby. They have not deteriorated from being discharged until the fan stops (about 1.1 volts) and recharged daily during the hot spring and they were already a year old by this point having been used a few times in a D6C Walkman. I bought yet another pack of AAAs also, these do really perform and are worth the price tag. I use the Eneloop smart charger (USB) and these are the only chargers we should be using! There is only one flaw of Eneloop Pros, in that they seem to get very hot while charging in the official smart charger if you close the plastic lid. Hotter than other comparable rechargeables. I eventually started blowing a little fan on them to cool them down while charging and keep the lid open. Despite this, they are still giving their as new capacity a year on.

These batteries are Great, lasting multiple hours of button mashing on Xbox controllers. And simply charging for around 4 hours when depleted. Have been buying these for several years, they usually last around 18 months per battery, charging roughly every other day of constant use. Much better and more economical than play/charge kits and buying one time batteries. I charge them in an amazon basics charger and usually but 2 packs of 4 so I can always have at lest 4 fully charged whilst using others in 2 controllers. I wouldn't buy any other batteries for high use scenarios.

These AA Ni-MH rechargeable batteries are a great upgrade from disposable cells if you use battery-powered gadgets regularly. With a capacity of around 2500 mAh, they deliver solid runtime in medium- to high-drain devices like game controllers, toys, wireless mice and portable torches — and they come pre-charged and ready to use straight out of the pack.

Great cells. I use these in all my music equipment that take batteries. They hold charge very well even when not used for a while and they have a pretty good capacity. Worth buying with a charger if buying a first set.

Love these. We use them for a DAB radio on the kitchen as our house doesn't have many mains sockets. Bought two packs and alternate between the two sets while one set charges. Batteries last a long time, maybe 6 hours of continuous listening. Only downside is time taken to charge. Even with the Panasonic fast charger, it takes around 3 hours. No stars dropped though as they charge back up to full capacity before the other set are depleted. Eneloops are definitely the best quality rechargeable batteries I've tried to date.

These rechargeable batteries are mint. Works brilliantly in my smart TRVs and TV remote controlled. I only charge them once a year for the TRV and haven't had to charge the remote one yet. (Super) happy days! Yes, they do take a while to charge but I'm happy with that and I just need to think ahead. Not cheap but well worth the investment.

Long lasting and good quality batteries. Hold their charge well.

The best rechargeable batteries in my opinion. Never had one fail yet.