Customer Ratings & Reviews

I've been waiting 20 years for this product and it's finally here. It's so easy to charge with the built in USB adaptor, has a charged indicator light built into the battery, holds a great charge and is reusable. Brilliant execution and an overdue solution to disposable alkalines.

These charged easily, keep a charge - so far very good. Hope to make these a regular in my house.

This is a really innovative product. wireless keyboards and mouses have always required batteries, and if used often enough, require change outs every year or less. These are rechargeable batteries that fit right into the USB port! So once your computer indicates your batteries are low, just charge them overnight and they're ready to go!

These are easy to charge and last for at least 6 months in mouse. Built-in USB charging is a great idea. Just keep track of the caps when you charge them.

I love these batteries. I use them for my wireless mouse at work. The ability to recharge them using a USB is genius. They ran out a little faster than I expected, but because I could plug them in without extra cases or charging ports, I have no complaints. Having built in lights telling you when it's done charging is amazing too.

I bought these because I needed some batteries that would last. I am impressed with how well they work so far. Easy to charge too.. Nice feature with the USB charging instead of having to buy a charger.

I had low expectations given the dismal performance of other rechargeable batteries. We all know the drawbacks, they're normally not 1.5v but 1.2v, they have lower capacity, and after a few years they might even explode (really, I've had almost every one of a particular brand rupture violently after about 2 years of usage with the manufactures charger, no less!) But these babies right here, these are what we all hoped we were getting when rechargeables first went on the market. They're 1.5v, and they're 1.5v until it is empty. No slow fade from your flashlight here, though it can be a surprise when it suddenly goes out. They're good capacity as well, so I've only experienced that sudden darkness once since using them exclusively for my flashlights and I work only at night if that says anything. I save the best for last, though, as it's their unique charging method that sets them apart, you pull the cap off, secure it to the battery via the magnet that's already in the cap, and plug it in to any standard USB port. The battery lights up red when charging and green when done, can't get any simpler than that, and the caps fit very snugly so you have no concerns over them coming off and getting lost. These are by far the best rechargeable batteries I've ever owned and I've tried them all, they're lithium based as well so they don't have a memory. They do get a tad warm after extended use but nothing concerning, and they'll save you a mint in normal batteries!

The batteries are great. My batteries always keep running out but now I don't have to worry.

So far these batteries are working very well. I got them because they can do one thing other rechargeable batteries cannot do - put out a full 1.5V output. I put a pair in a cordless toothbrush that I have. I always hate how regular batteries drop voltage as they drain, so the toothbrush gets slower and slower until I change the batteries. So far, the toothbrush is running very well, and if they perform as expected, the toothbrush should now only slow when the batteries fall below minimum voltage and need charging. I left off one star only because I wish the current capacity (in mAh) was higher. It's only about half that of NiMH rechargeables. The magnet on the back of the cap is also not super strong so be careful not to lose it while charging.

I have used these in the past and purchased them for my Granddaughter to use for her many electronic devices. They recharge in a couple of hours and they use a USB outlet or your computers USB slot.

Great for in vehicle traveling needs for battery operated razers/shavers and other devices, such as a wireless mouse or voice recorder.

These are great, good life, I use them in a wireless keyboard & mouse for my pc and I’m not disappointed. I Would Highly Recommend It.

I bought these because 1, they're re-chargeable and 2, they put out a ful 1.5v. Normal NiCd/NiMh rechargeables only put out 1.2v when fully charged. My Logitech Harmony 650 throws a fit within a few days of using 'normal' rechargeables, even new ones. These have lasted about a month now. I also like that they can be charged using any USB charger. The only thing to be aware of is if using a multicharger, make sure the ports are far enough apart so they can both/all fit. Just don't lose the cap, which is also the + side of the battery.

I purchased these batteries because I was so tired of constantly buying batteries for items in my home. I am so happy I did. They work just as advertised. You can plug them into any usb outlet and they turn from red to green when ready to use and can be used in anything that uses normal AA batteries and last.

I came across these batteries by accident while in the store. I use rechargeables for my battery needs. I found them interesting and tried them out.... and I'm not disappointed. Will buy more.

this product has a small design flaw in that it isn't easy to get a fully loaded (4 batteries) back out.but it does do a great job charging.

Totally recommend these batteries. They last a long time

The batteries themselves work great. The concept of having the ease of any USB port charge your batteries and not need a specific charger is great. I love that the cap is magnetized, so that when you charge them you won't lose it. The only thing is that -even at a sale price- these things are a bit pricey. Nonetheless, they are worth it.

I got tired of replacing the batteries in my TV remote, media center keyboard/mouse, and gaming controllers, and wanted to go with something rechargeable. Standard NiMH and lithium ion rechargeable batteries loose capacity over time, and shunt their charge even when in storage. These EcoCell batteries, however, use the same lithium polymer battery tech that is used in modern laptop batteries, allowing for longer shelf life in storage and better maintenance of their use-time between charges. It also really helped that I bought them for only $10/pack (in-store pricing was 30% lower than online). $10 for 4 batteries that equate to 500 single-use batteries? Heck yeah!

I absolutely love these rechargeable batteries! I've had regular rechargeables before but the fact that these charge through USB ports is super convenient. They seem to hold a decent charge as well.