Deleepow Rechargeable AA Batteries USB 3400mWh AA Lithium Rechargeable Batteries 1500 Cycle with USB C Cable 4-Pack

These don't last super long in any device (~3/4+ vs. 2800 mah NIMH and about 1/2 the time vs. Lithium and Alkaline) but you can't beat the value or convenience.Generally you're not supposed to leave rechargeable batteries in the charger but these intelligently charge, stop and top off as needed (trickle charge). I bought 8. I have wireless trackball mouse, a wireless air trackball mouse (like a pointer) and an automatic trash can in my office. Even though they don't last as long as typical nimh, you can't beat having a set safely fully charged and ready for the things just sitting around that need them. With most any other rechargeable battery (but especially nimh), if you get lazy then you basically waste your cycles (because they generally should be fully or almost fully discharged and then recharged to stay healthy, even with little to no memory effect) and most people will just leave them sitting in a charger for weeks until ready for use (because who wants to wait 2-4 or more hours to swap batteries when you need to?), which is very bad for them.Also with Lithium batteries, there tends to be very little to no warning when they are about to die, so beware. Digital numbers will be "off" and will go from 100% to dead. Light warnings will likely not do either (although I have seen a few work). I've lined my charging times up nicely, when my mouse starts getting iffy, I charge 4 of them up and by the time the mouse stops working, the trash can batteries are ready to be swapped as well, rinse and repeat in 3-4 months (I get ~5 months using alkalines and 4 using nimh).Finally, I have had situations where I thought a battery had "died", it had not. If you leave a/the 'used' battery dead and it manages to quite fully drain, the green light does not come back on right away when you plug it in to charge, it takes time. I don't see where Deleepow warns customers prominently. Because of this, I really thought I had a dead battery, however because I've seen funky things like this before, I decided to play with it. I left it on the charger anyway and slowly but surely the light came on and began to blink (very low for a while) and as time went by, brightened up to the normal luminance. I mention this because I read a number of reviews where people have said the batteries died/stopped lighting up, etc. so I hope this is helpful to/for the next person reading it.Another warning is that due to the usb c connector, you have to be gentle with them. This isn't a bad thing really, but it's not for people who just throw batteries around and are rough with them as it is likely there will be connector trouble before you get your ~1500 recharges.Anyway, I fully recommend them!

When they got here I charged them they seem to be working fine3-24-23 bought another one I like them that much they have a long run time but at the end they'll drop dead fast. 7-1-23 I bought another one just to have some extras of laying around I like them that much!!

I purchased two combined sets of AAA and AA for my son’s toys. In general I like this USB-C charging batteries. However, One of the AAA 1200 mWh cannot be charged and no voltage at all at the first time to use and also after charging. The rest of the sets are so far so good.Is it possible to issue a replacement of the dead one? Thanks!

Exactly as advertised. They work in my Blink wireless cameras. Not sure how long they last yet, but they DO work in the blink cameras. EDIT I'm adding to the review. I have had my batteries in a wireless blink camera out side of my house for 23 days now. The battery JUST NOW DIED. 23 days doesn't seem like a lot, but my camera is in an incredibly high traffic area. These rechargeable batteries got about HALF of the energizer lithium life in the cameras. WITH HOW MUCH ENERGIZER LITHIUMS COST, THESE BATTERIES JUST PAID FOR THEMSELVES AFTER I RECHARGE THEM.

Fast shipped, accurate shipment delivery tracking status updates, high quality item, I recommend both the seller and this product

I bought these for my Blink Cameras. I have 2 doorbells and 3 Outdoor. The first set came and I topped them off (didn't need much) and installed 2 in a doorbell and 2 in 1 of my outdoor cameras. Everything worked fine so I set up a subscribe and save and have gotten 2 more sets. My outdoor camera batteries died at some point not long ago without warning. But my estimate is that I got three months on the initial charge with the outdoor camera and with the Blink Doorbell I got 3-1/2 months (although it is wired with power from the low power doorbell transformer). Not what I was hoping for, but actually not that bad considering the price. HOWEVER...I replaced the dead Deleepows with fresh ones and right off the bat, both of the Blink cameras were showing about 5% battery level and was getting alerts from Amazon that I needed to replace them. It was alarming to say the least. So I took them out and started to charge them thinking they discharged themselves. They only took about 5 minutes before they indicated full. So I popped them back in. No change in battery level, still less than 5% as reported by each of the cameras. So I charged the original ones that worked so well, and those took about 3 hours to fully charge per pair. Installed those in the cameras and still no improvement. Less than 5% with these as well. I don't know how to explain it. But I have 3 sets of 4 and none of them will work for my cameras. I am beyond disappointed and upset at myself for wasting all this money on these. How I got decent time on the 1st set I bought is a complete mystery. But none of the others worked and neither did the 1st set after 1 discharge cycle.

I use these instead of single-use lithium AA batteries in a portable temperature meter (Temp Stick) in a commercial freezer. The original single-use lithium batteries included with the device lasted about a year before needing to be replaced. These last about 6 months but then I just let them warm up and recharge them. The device only uses 2 AA, so I always have a charged spare set on hand for when the batteries get low, and it includes a USB-C charging cable which will do 2 batteries at once. They are more expensive than the single-use lithium AAs, but they will pay for themselves after a few charges compared to the single-use lithium AAs. Will buy again, as they are super convenient and useful replacements to standard AAs and provide constant voltage output until they need to be recharged, unlike an alkaline whose voltage drops as it discharges. Totally worth it!

Half of the batteries have issues holding a charge. Some get warm while charging and don't seem to ever fully charge. I would pass on these.