BONAI 24 Pack 2800mAh AA Rechargeable Batteries 1.2V Ni-MH Low Self Discharge - UL Certificate

I have been using these batteries in my outdoor solar lighting and they work great. And so far they seem to only get better.The Batteries that came with the Solar lights only last until about 9/10pm. These Batteries last until 12/1am!I also have been using these for my garage to help me park. (precision parking lights) & I have yet had to recharge them. The previous energizers I had to recharge once a month. Right now I’m at 2.5 Months and still work perfect without having to recharge once.Why pay triple the price for Energizer when these work perfect.I recharge them with the SHARPER IMAGE recharger that recharges normal batteries too. But that is pretty much a gimmick because these rechargeable batteries by BONAI last so much longer. 2.5 Months and I’ve cut my recharging to ZERO RECHARGES so far.

I decided to purchase a bulk quantity of batteries. As a family we were using and throwing away way too many batteries. We have used the batteries in numerous remotes, flashlights, remote control cars and devices. They have all held a good charge and lasted as long as expected. In hindsight, we should have purchased these a long time ago. If you are on the fence debating cost/benefit I would recommend purchasing these batteries and you will be glad you did. 5 Stars.

This represents a good value especially when compared to how many alkaline batteries you could replace by using these however you can find better prices elsewhere .

I'm an Electronics Engineer, Computer Desktop Architect, Network Engineer, and Software Engineer. I've got quite a broad range of experience having over 40 years of experience in the Electronics and Computer industries.I also have well over 350 rechargeable batteries of various canister sizes (about 20 different sizes) in both Ni-MH and Li-Ion elements. Additionally, I have 9 smart analyzing chargers (6 single cell, and 3 multi-cell types) to which I test every Ni-MH and Li-Ion battery I purchase. Any battery whose actual capacity that does not come within 10% of rated capacity is simply bad, or manufacturer over-inflated hyperbole.Such seems to be the case with the Bonai Ni-MH AA batteries. I purchased the 24 pack of 2800mAh rated capacity flavor, and they fall quite a bit short of their rated capacity. I've included attachments that have the best and worst of this set, the remaining have fallen somewhere in between those two values. To give you a comparison, I've tested EBL's 2800 mAh Ni-MH batteries (48 of them actually) of which the worst one came in at 2719 mAh. This is only 3% below rated capacity, and the remaining were all better - including about 16 that came in at rated capacity or better. All tests I do for actual capacity are done on the "discharge" side which is more accurate and a better representation of a battery's actual performance characteristics you will see in a device.In a simple statement, Bonai's are pretty bad - not the worst I've tested - but still quite bad. In the "Best" picture, you can see that the very best of the 24 tested out at 2303 mAh (82% of rated capacity - or in other words, 18% below rated) and in the "Worst" picture you can see the 4 worst batteries from the set, retested together for effect. Notice the worst comes in at a meager 2134 mAh (76% of rated capacity - or in other words a huge 24% below). This is a far cry from the 10% reference point you should use for determining a battery's "worth" when comparing rated to actual capacity performance.So in summary, these batteries are nowhere near their rated capacity. Had they been labeled 2300 mAh they would have been OK. But since they are marketed at 2800 mAh these are not the batteries you are looking for. In fact, you will see other manufacturers that indeed do have 2300 mAh AA Ni-MH batteries as this is a popular rated capacity (based on technology and processing). My instinct tells me that Bonai has probably rebranded their 2300 mAh batteries to try and make some sales to unsuspecting customers, though it is simply a guess on my part. Either way, these are not 2800 mAh batteries, and buying them under that guise would be a mistake.

None of the 24 battieries tested anywhere near 2800 mah with Powerex MH-C9000 WizardOne Charger-Analyzer--2200-2400 is more like it. 2800 mah after break-in would be 5 stars, but since the actual performance is only 78%-85% of the claimed capcity, only 4 stars. But the batteries work well for now. Haven't had a good look at self discharge, but after months idle after charging, they still measure ~1.3 volts. That's worth something, too. If they crap out earlier than some of my older Eneloops then I would downgrade this review accordingly. The Eneloops were much closer to claimed capacity and a few exceeded the 1900 mah rating. The Eneloops are starting to "wear" a bit and capacity is dropping off.

Rated at 2800 mAh but in truth are only 2300. That is 500 mAh shy. Even for the price that is just too far off the mark for me. Avoid and look elsewhere.

I have purchased three different orders of these batteries over the past year and they give great performance. I have their 8-bay battery charger and it charges the batteries perfectly! Neither the batteries or the charger get hot and the battery charge lasts and lasts, even when not in use. There was an error on one of my orders and the response was quick and handled superbly! BONAI has great products and is a terrific company to do business with!

So far, i am very pleased with these. I purchased a set of barrery operated candles around Christmas time. I loved them so much I am leaving them out. I didn’t want to limit my usage, so I bought these rechargeable batteries so I could simply recarge as needed. So far, so good!!

These rechargeable batteries work just fine for most things. The positive end of the battery though does not project from the main battery as much as most AA batteries and so it doesn't make a connection and therefore unusable with some devices like my Apple Magic Mouse