(Pack of 2) 3 AA Battery Holder, 3 AA Battery Case Box Holder 4.5-5V with Cover and On/Off Switch, with USB Cable

My ten month old baby is into pulling cords. I have tons of plants and grow lights that need powered but has to unplug. These fixed my issue! They power my lights, and work great. So inexpensive. I can’t say much on battery life as I just plugged them in…but will report back. I am so happy. These are great and will withstand the baby torture!

The perfect item for when you want to make a low voltage, USB powered device, portable.Battery life obviously depends on power draw, but its well built and works real well.Great value

Got these to run some LED decorative lights at my vendor tent and they work amazing. Not one issue with them after 8+ hours of use. Use good batteries because cheap ones will run down quickly (i mean their cheap batteries, they're not made to last long). Will be buying another set of these to keep as spares around the house to use on LED lights when the electric goes off.

Bought this to power a black light in a wall cabinet with no outlet access.

These replaced the ones that came with our sting lights when the batteries popped and got the acid everywhere. They work great and just what we needed!

I purchased these for a project I was working on. They arrived in great condition and with screws to secure the cover.The trouble with them is the individual cell size allowance. I installed NiMH rechargeable batteries (brand-spanking-new) and the fit was excessively tight. I had to really work to get the cover on. Oddly enough, I've had this trouble before with Chinese made battery holders (a flashlight for instance). For some reason Chinese batteries are just a smidge smaller than U.S. batteries. Go to Harbor Freight and get some AA's and see for yourself.The other issue I had was the center cell (+) terminal doesn't protrude through the gap far enough to make contact with the AA cell button. Perhaps this is due to the rechargeable batts having a button height lower in relation to the body height than your typical alkaline or lithium AA cell. I had to remove the terminal and lightly tap an awl using a hammer into the "cup" to make it stick out further. I gave it a little teat or nipple protrusion if you will. That solved the problem.Other than generally having to modify most China made stuff I DO like the fact that there is a USB port attached to it! Hard to find these.Keep in mind these are NOT DESIGNED TO BE USED AS A POWER BANK FOR CELL PHONES!!!! Why? Cell phones require a regulated 5V source to plug the cord into. These are 4.5V nominal with AA and 3.6V nominal with rechargeable batteries plus there is no voltage regulator! It'll never work for this usage without serious modification.

I got it for my daughter’s school project and it worked great! Easy to hook up, works with AA batteries. I only wish the cord would be a bit shorter, but for other projects it might be a plus. Very happy with this purchase.

The batteries have either burned out within a couple weeks or the unit itself is low quality and broke. Either way it’s no longer producing power