Got these as an emergency given that our crap government has said there won't be any power outages this winter. Pretty much everything thats bad they say won't happen, does. So, I was going to go with a USB rechargable but these given their bright LEDs are great. Just keep a stock of AA's on hand too. They have the handles on the side that swing up for holding like a coal miners lamp and also magnets on the base along with a hook. I can actually see other uses for these beyond the power cut situation. So, yes good purchase methinks. Can't comment on the battery as I have only had them a few days hence the 3 but don't let that put you off. All in all, very pleased and a really good price right now.