I've only had them (bought 2) for one day, but so far, I think they're great. I have one under a section of kitchen cabinet where I needed some light in the morning while pouring my coffee. The other is on the other side of the door to get out to the garage so that it triggers when dropping stuff in the recycling bin. Both work exactly as I hoped. I love the fact that I can recharge them as opposed to changing out batteries. I suspect the charge to last a month or more before needing another charge. Time will tell how well these do (over time), but so far, fantastic!
Update: 3/5/17:
Being a gadget geek, I love stuff like this. They fill a need, are made well, and are a bargain. I charged them when I got them almost 3 months ago, and haven't charged them since. They're only on 2-3 times a day for a short period, but they hold a charge well.

I used these in my gun safe for the lower shelves. I like the fact that they are rechargeable and motion activated. When I need them to come on I either swipe my hand across the light, or simply just reach in and the light comes on. The amount of light is perfect or me to see back into the nooks of the safe.

Used it one time so far so good !

I bought several different brands of rechargeable motion sensor lights. This was my favorite and I ordered it again.

The light on this is a soft white, not the bluish light, if that matters to you.

These replaced my battery-operated motion sensor lights. The battery-operated ones pick up motion in a wider angle better but overall, with the batteries and the shape of the battery lights, etc., I prefer these rechargeables.

This is an awesome charger! It automatically detects what battery you put in it and charges it accordingly and shuts itself off after the batter is fully charged. I use it to recharge my batteries for my vaping unit but have used it for other rechargeable batteries. It has a nice digital read out on the progress of the charge as well. It even comes with a cord so you can plug it into your cars cigarette outlet so you can use it on the run. I have had zero issues with this and highly recommend it to anyone who uses rechargeable batteries.