Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great for the battery guzzlers

I've only used this for the AA batteries for my wireless mouse and son's wireless game controller -- items we all know go thru batteries like I do chocolate. With the 24-hour "on" usage, I've found that a charge lasts about 6 weeks; the same amount as the non-rechargeable, name brand batteries. Pop in a fresh set and I'm good to go. The unit is easy to use and packs away neatly in its own case. What's not to love?