Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nice unit - simple and effective

I'm moving to rechargeable batteries for all my remote controls, wireless keyboards, mice, etc, that seem to just chew up batteries. I tried this unit after a little research and it works great. The batteries come uncharged which was slightly disappointing. But after charging they have a good lifespan. When I take out a dead one I put it right into the charger, and when its charged back up I put it into a little container I keep in the closet.Handles 4AAs or 2AA and 2AAA at a time. Buy enough extra batteries so that you have enough for all the devices you want to use these with plus a few spares to rotate through when they discharge.