First I bought one from Best buy, and the battery was down to 89% in two days, which started slowing down a bit, but still. Now I bought this one from Walmart, and the battery stayed at 100% for almost 2 days, and 4: days later it's still in the 90s. Now this is correct how the battery is lasting. Thanks Walmart, and of course geeni. This has the easiest magnet hookup, and now I'm addicted. I know there's better cameras, but I love how easy this is to setup. And has a very clear picture and night vision.