Survival Frog EasyPower USB AA Rechargeable Batteries -1.2V/1450 mAh Long Lasting Double A USB Co. - (4 Pack)

TLDR: Great product. Solid made, easy recharge, charge held well. 98% comparable to capacity of a regular AA Duracell battery. One out of four batteries was damaged for me, and before I knew for sure, the seller already sent me a new pack. I am definitely coming back to purchase again from this seller. Long story for whose needing more details... and nerds. =3 I use a high-powered device every day for work and hobby. I've started with a NiMH rechargables, but within a few months they were inoperable, due to constant abuse (also low quality, but I got them with the device). So I decided to try the regular AA Duracell and Energizer batteries. Both are NiCa and rated around 1400-1700 mAh. I clocked about 7 hours of use off the regular batteries, give or take half hour. Getting tired of spending money constantly on batteries and polluting, I look up these batteries. Now, I've also looked around - amount of mAh, reviews, even company itself. I decided to try out Survival Frog. I was not disappointed. As I have mentioned above, I think one of the batteries is a little degraded chemical-side and discharges quicker than its partner in my device. So this kept in mind I would like to speak mostly about the good (regular) pair (there are four in the pack) and provide best/average stats as I have came to experience them. First of all, the items are great in terms of use - they compare to the regular batteries within 98% of capacity, in my opinion (about 10 uses for me at the time of writing this review). For the remaining 2%, they made up more than enough with rechargability. So some of my testing/usability stats: - With my high-power device I get a solid 6-7 hours of time, solid use, no issue, no interruptions. (compared to 7 hours of Duracell) - I have charged with a Mac, "PC" and car charger. Different amp grades. Consistent use, Batteries shut off on their own. - Recharge time is about 40 minus off a computer-out USB (I have not clocked car charging because driving take attention, sorry) Pros: - Reusable over and over... and over... No drop in performance after 10 charges, consistent use time. - Rechargeable (I mean... this is why you are buying them... So you already knew this. =)) - "Comfortable" - Cap is secured well for the USB connector, although I will need to see how long the rubber string lasts. Looks decent though. - Comes with a small USB hub for charging. Very lightweight with switches for on-off. - Very lightweight (I think they are lighter than regular batteries) - Design is, actually, pretty nifty (Minus the color, but is for "frog" color) - Seems to be build quite solid - don't seem flimsy Cons: - Caps don't always fit well visually, but only visually - there is no interruption in service and electric contact is solid - Poison-Green color is a con for me, per personal preference. I would definitely purchase again, when the charge degrade.

I've been using these for years & they WORK & are super convenient. I have saved a ton of money on batteries for everyday things like my xbox controller, electric toothbrush, wireless mouse, etc. And it is so convenient when your wireless mouse battery dies & you can just charge the battery right into the USB port of your computer. I have had only 1 battery in my briefcase since I've discovered this item - and I have yet to throw out a single battery. They haven't gone bad yet & it's been years! As long as they continue to make it, me & my family will continue to buy it. I only wish they'd ship to Hawaii, otherwise this is an amazing value.

By making the cap a cover for the USB slot I feel like this is much easier to use than the batteries I've seen that use a USB-mini side port. With those if the mounting was done improperly, the cable won't either slot properly or stay attached, and in both cases the ones I had didn't charge properly. With these, I can plug them in, leave them overnight, and I'm good to go. They're great for both my wireless mouse and my Xbox Controller, so I can play anything on my laptop at home, or on the go with no problems. The only reason I don't give them a full 5-star is I wish the batteries would last a little longer, and I would love to see the material used to keep the cap attached to the main battery to be made of something more durable-seeming.

Some of the other reviews made it sound like I would need to be charging these pretty regularly, but the one I've been using in my computer mouse, I've had in there for almost 2 months and the one battery has lasted this whole time without swapping it out. They fit perfectly, so there is no worries about them being the wrong size or anything with the cap. It makes sense that the cap would be attached, that you cannot fully remove it just to make sure it lines up correctly when you put it back on, and having that cap attached limits where I can charge it, I use a USB hub, so I had to move some wires to get it to fit, but they charge very quickly, and they definitely hold that charge. I wish I had these when I was younger, and needed more batteries in my life. I would have saved a lot of money.

You can reuse these little guys forever (Not really, but mine have kept up for 3 years). Plus any USB port can recharge their pretty large duration.

I bought these for my sons Xbox controllers because he was burning through store bought AAs. These USB rechargeable batteries last just as long if not a little longer than store bought ones. I also gave 2 of them for my mother-in-law to use in her insulin pump. She was going through 1 lithium battery about 5-6 days. The rechargeable AAs last get around 4 days but she can recharge them which is saving her money. I like that this set comes with a charger, and I have already ordered another set and plan on ordering at least 2 more because they work, and just in case.

bought these because they advertise 1450mah of power....so compared to my 1200mah that I already have, these batteries should last +/-20% longer under typical load. So I use them for my in-ear monitors. I have NEVER run out of power with full batteries on my 1200mah batteries but it is now 3 shows in a row that these had died on me after about 2.5 hours of usage - usually right about 8 songs to go in the show.... using them in my wireless mic however they seem to last long enough however. But I have gotten two full shows out of the 1200mah batts and not even close on this. I seriously question that these have the extra mah in them.

These are exactly as described in the advertisement. A good charge can last a very long time! I’ve used these batteries for things like my milk, froth, remote control, and beauty tools. I can probably go up to a month or maybe even more sometimes before I have to recharge my items. For context, I use my froth or daily, my remote control daily and my beauty tools weekly.

bought to use in my tv remote as it eats duracells, these don't last as long but cost a whole lot less than duracells to replace. should break even in about a year

So sensible. No endless hunting for a charger. Just a battery you can re-charge so easily Best innovative idea I’ve seen in a long time.

Great

Got these for my Oculus Rift S, use two while the other two are charging. So far I'm very happy with them. Nice build quality, come with a case to keep them safe. A good purchase for sure

I use these batteries only for my Logitech G604 wireless mouse. It's been about a year (Maybe 9 months?) and they're fantastic to have. Pop the top, plug it into your computer to charge, take another charged battery and put it in, and you're off to the races. The mouse typically lasts about a month and a half, maybe two on a single battery charge. Regular AA batteries spit power out at 1.5v while these batteries spit out 1.3v. But my mouse hasn't had a single issue with these batteries. I was concerned about this issue when i made the purchase, but, I've not had a single problem.