RayHom AA Rechargeable Batteries 2800mAh Ni-MH AA Pre-charged - Battery（8Pack ）

I condition all of my rechargeable batteries before use, and I use a Ambient Weather BC-3000, which is a less expensive version of the Opus BT-C3100 & BT-C3400 charger/analyzer. Although these batteries claim a fully charged rating of 2800mAh they only charge from 2225mAh to 2298mAh, but they do that pretty consistently. The good news is they have a good build quality and are cheap. I bought a 16 pack of these batteries for $21.97 making their cost $1.38 per battery. That is not bad for a 2200mAh battery. The price for the regular Panasonic Eneloop 16 pack is $37.39. That is $2.33 per battery for the 2100mAh eneloop. The AmazonBasics AA High-Capacity (rated at 2400mAh) 8 pack will cost you $18.99, which is $2.37 per battery. So for $1.38 per battery, the RayHom AA 2800mAh are the best value. If they had rated these batteries at 2300mAh instead of 2800mAh they would probably sell better. Also, all 16 of the batteries I received were good. All charged slightly over 2200mAh and a few charged to just under 2300mAh. You can check the 4 star ratings for the AmazonBasics AA High-Capacity and see a review where the actual rating for that battery is really 2300mAh, which is not bad either, but it is not a bargain. If you think you really need a higher capacity battery, you might check out the EBL 2800mAh battery. It holds a charge of 2666mAh to 2745mAh and a 16 pack of those will cost $28.96, bringing the price per battery to $1.81. But the RayHom is the best bargain!

I am a heavy user of AA rechargeable batteries. For the past 4 years I have been cycling 5000 – 7000 miles per year on solo bicycle tours in the USA, Latin America, Africa and Europe. I use 4 x AAs each day on tour, which usually involves 4-8 hours of use (sometimes 10-12). These power my Garmin Gps Map 64S and my 200-lumen Mako front flashing light. (My rear light is a 150 lumen Cygolite Pro, USB-rechargeable). I want all my devices to last the whole day without recharging, and usually they do. Before each tour I use a tester to ensure that my batteries have adequate capacity. I am always on the lookout for ones that last longer.I test my batteries by means of a Powerex MH-C9000 AA/AAA NiMH charger/analyzer. This device I have had for over 5 years, and have found it reliable and useful. I can set separate charge and discharge rates (200 – 2000 mA) for each of 4 batteries at a time. It allows me to “break-in” new batteries by cycling them several times, and to “Refresh & Analyze” both old and new batteries to check their capacity. I also use this for my AAA batteries.I have tested dozens of AA and AAA batteries over the past 4 years. The Eneloop and Amazon Basics batteries have typically yielded measured capacities of 96-99% of rated value, depending on age and charge/discharge rate. Recently (Nov 2018) I purchased 8 of the Amazon Basics High Capacity (2400 mAh) batteries. These were made in Japan. Out of the box, their measured capacity was 2340 – 2410 mAh i.e. an average of 2381 or 99% of rated. This was at 500 mA charge and discharge. I also tested 8 used Amazon Basics 2400 mAh batteries that I had purchased in mid 2017. They had been recharged perhaps 150 times. One had failed (high internal resistance). The other 7 I tested in “Refresh/Analyze” mode. At 500/500 mA charge/discharge they tested at 2234-2388 (2317 mAh avg) or 96.5% of rated. At 200/200 mAh charge/discharge they averaged 99% of rated.In Nov 2018 I ordered a pack of 8 RayHom AA batteries from Amazon. These are the subject of this review. They were labeled 2800 mAh, which is higher than any I had seen before. These were made in China. I tested these with my Powerex tester (see above). Break-in: they tested at 1942-2038 (1980 mAh avg) or 71% of rated value (2800). I ran 2 more series of tests, both in “Refresh/Analyze” mode. At 500/500 mA charge/discharge they tested at 1998-2080 (2024 mAh avg) or 72% of rated. At 200/200 mA charge/discharge they tested at 2079-2105 (2090 mAh avg) or 75% of rated. Conclusion: the Rayhom AA 2800 mAh batteries are mislabeled. They are 2100 mAh batteries. I returned them to Amazon.Note: in all my years of testing AA and AA batteries I have never measured battery capacities this far below the rated value. Usually they are at most 10% low. The Japanese-made ones have always been closest to rated capacity.

They look good. Comes with a plastic storage case. Average charge time and performs pretty good. I put them in my Q2n 4k and it seems to last longer than my Enelopes. They aren't that old but maybe a little performance dropped on those. We'll see how these hold up but initially the performance is there nothing bad about them yet.

I got these last couple weeks. They work fine. I have tested with my charger i got a few weeks back. They both work well with each other.i did not know how long it takes to fully charge because i left them charged over night. By the morning, they were fully charged. They work with my remote controllers with no issues. Do not spend too much for other brand name, these work just fine for cheap.

These are a superb set of batteries, especially for what they retail for. Only thing that threw me off at first was that the bright color on the battery is placed where the base of the battery is located. Once you remember that, you'll be less frustrated when using these. They charge well enough, no issues there. The inclusion of little cases to hold a number of them at a time is a nice touch, too.

Used in my outdoor lighted Christmas Wreaths each uses 3. On for 7 1/2 hours after which they grow very dim and the batteries need to be recharged. Don't know how many times they can be recharged before they will no longer take a charge. Just have to wait and see

I bought this 16pks AA battery, and they came in with plastic storage box 4x4, they are all precharged. I used them for my kid's moto car, and it looks woking a week, and similat as my other batteries. If compared against the cost, it is OK. but i will keep eyes on the lifecycles

Using for my outdoor security camera and is working well. Holds a charge great. I have them combined with a solar panel.

The batteries charge only to 30% after only approximately 20 times recharging. I have 2 other brands and they are still charging to 100% after 60 times recharging. The batteries definitely are low quality batteries. I missed the return period and wasted money.

There’s lasts way longer in my GPS than energizer or Duracell alkaline batteries