I use the AA Ni-MH (pack of 4) for professional use, and I got these for a Siemens landline phone. Their duration and quality are incredible. I will hardly use anything else in rechargeable batteries.

Just fine. I received them on Wednesday 25/2. I put them in a wireless Gigaset CL660HX. My only concern was whether they would charge with the wireless base. They charged perfectly and since Thursday 26/2 in the morning, the phone hasn't been on the base for even a minute. The truth is that we no longer use it heavily. As I estimate, it should last another 2-3 days without charging.
So 5/5.

The batteries that the young man advertises are said to be AA but they are actually AAA. Also, it is not shown in the photo whether they come with their charger

I've had them for about 4 years, I knew they were good compared to others but I fully realized it when I got an energy-hungry Christmas ornament because of the season! Some regular batteries, even rechargeable ones with 1000mAh, couldn't keep the ornament lit for more than 2.5 hours. I thought, let me try these batteries, which I repeat are not new and are quite used, well, they lasted 15 hours!!! 5 stars and that's not enough! You get what you pay for!

Since I got them, I put them in a remote control and forgot about them. My kid doesn't play often, but they've been there for about 2 years without any problem. I bought 4, but I still haven't used the others.

Not cheap but by far the best rechargeable batteries available at the moment. Powerful and they lose very little charge over time.

Oh yes, finally these are batteries! Even when the indicator on the cordless phone is at minimum, it has a loooong time before it needs recharging again. From now on, only these!

They do their job. I think they are the best in quality price and mAh. I have bought them many times and I will buy them again.

Very good batteries.. The price may be a bit high but they do their job and more than that.

I bought them for a landline phone. They don't work. When the headset is discharged, it doesn't charge on the phone base. I have to take them out and charge them with their charger. I am disappointed.

Purchased to replace the batteries in a PANASONIC KX-TGA651EX phone. We've had them for a week now and the battery indicator hasn't dropped a bar yet. They seem like beasts regarding the mAh. I will update if I notice anything else during use.
Update: Two years later and with continuous use, they haven't missed a beat.

And they work perfectly even in cold weather, with an external sensor that I have been using from November until today, like new, even at -5 degrees, etc

Excellent batteries, I have been using them for about a year for my wireless keyboard and bike lights. I am completely satisfied. They last much longer than store-bought batteries.
The only problem I have encountered is that sometimes they don't charge to 100% in one session with the XTAR VC4 charger.

The wireless phone lasts at least 10 to 15 days with regular use. But they do not come charged as stated. They need to be charged

For AA, I accidentally bought them, okay they're not wasted. They will last as long as they can.
Besides, I bought the same ones in 2017 but AA, and yes, they have low performance but I still have them and they still work, and in the end; I have made an investment for this, my dear Greeks, let's not want everything to be ours.
They are fine in the end, sometimes you get what you give, so don't complain when you buy cheap products for high quality and performance. I hope I helped

Simply unbeatable, two and a half months on a radio with two hours of daily use and they still keep working!!!

If you want it for the remote control, it doesn't make sense... The professional flash keeps firing non-stop 3-4 times without any "hiccups" until the flash is recharged... Only this, for me, is worth every penny

I have them in two wireless Panasonic devices for two years now. With normal use, they last for a week without charging.

They were purchased to be used with the TENS/EMS machine Beurer EM49 (even though the manufacturer explicitly states to use only alkaline batteries). I charge them with the XTAR VC4, and they last for about 13-14 hours, which is impressive. Over time, they are worth every penny.

I have been quite satisfied with the durability of the wireless Panasonic. It will show over time how much its endurance is affected by the heavy charges I make (I have only had them for a month)

Although we are talking about batteries, I believe that the Eneloop Pro series from Panasonic is simply the Ferrari of batteries for many and various reasons.

I bought them 1.5 years ago to replace the batteries of a Panasonic cordless phone. Mom batteries 550mAh, charging about 6 hours, over time the duration had dropped from 5-6 days to 3 days. These require at least 8 hours of charging (logical since they have more mAh), but from the beginning they give me 5-6 days at most, which is about the same as the old ones with half the mAh.
So, in terms of cost and mAh, their performance is not justified. The only positive thing is that in the 1.5 years, this performance has not decreased. Maybe they are good for another use/device, but if you want them for a cordless phone, I do not recommend them.

I haven't worked with them enough yet ............ they seem good... we'll see.
update: 31/10/21 .... I'm still working with them..... I bought more because I need more, especially for Christmas.

I have two sets and I use them on headlamps. Their performance is excellent. Duration and intensity, just as I want them. I noticed that after the first charge, they slightly expand, without causing any problem, except that the small carrying case no longer closes (when they were brand new, it closed normally). So far, I have only charged them five or six times. If they prove to be durable over time, they will be worth their money.

Amazing batteries. Wherever I have tried them, from my son's toy car to my PC mouse, they have incredible longevity. They are a bit pricey but worth their money.