High Capacity USB Rechargeable Batteries AA 1250mAh with Micro USB charging cable （4 pack)

The batteries are nice, but kinda weird - at low power, they can randomly decide to spurt out more current, or even any current at all while seemimg to be dead.The CABLE on the other hand, I find is well worth the total price for the batteries and cable. It is a bit short, so an extension cable will likely be needed for use in difficult to reach usb ports, but the ability to charge four things from one cable is a godsend for a portable power junky like me.

I bought them to use in a LuxPro LP630 LED flashlight but found that it seemed to run down fairly quickly. I tested the batteries after a full charge and found that the light went out after 1 hour and 14 minutes. It ran 3 hours and 26 minutes on a new set of NiMh rechargable batteries that have an 800 MAH rating. I tried to get information on the flashlights power requirements but it's not available. The four wire charging cord is real convenient but having to take the batteries out to charge and then back in so often is not.I'm guessing that the 400 MAH rating is inflated, or that the internal resistance difference between the two types causes a faster discharge. In any event, I'll not be buying any more of this type. I will try them on other applications, but I don't think they'll fare much better.TOM

Got these for an LED flashlight. 400mAh is a bit on the small side for capacity for a flashlight. Other than that these things function exactly as described. They give you a consistent 1.5 volts the entire use of the charge. The only downside is when using in flashlights you can't tell when the battery is getting low as it is at maximum brightness until the battery just turns off needing to be recharged. Wonderful little devices can't wait until the talk Nology and proves to the point where they can pack a little more mAh into these things.

I have lots of micro USB devices and cables, so these fit perfectly into my ecosystem. I no longer have to worry about dragging a charging device around. I've already got the cables, battery packs and so on. I haven't measured the capacity or voltage, so I can't tell you how closely they mimic regular AAA batteries. I primarily use them for headphones and mice. Get extras so you can keep some charged, and swap them when exhausted.

One of the AAA batteries fails to make initial charge (does not charge at all after several attempts). I can send you the defective AAA battery if you can send me one AAA battery replacement.

Use these in various remote controls and they work great.

I give five stars for the product as I see it, since I liked this idea of usb rechargeable batteries. However I did not try them yet.

So I purchased the AA version of these a while ago and have been very pleased with their battery life. These AAA versions last 1/2 as long at best. I use them for my work light daily, and my light doesn't make it through the day. With standard rechargeable AAA batteries, I get 2 full days before I need to recharge them. Maybe they will be good for my TV remotes.