mouthfulloflakes, The brand names are different. If you lookup powerextra's website they are a higher end 3rd party battery manufacture. I have 2 of them. The only reason I got them was because I had a big job and needed the extra batteries. I did my research and got the best batteries I could find in my price range at that time. I couldn't afford the name brand one's at that time but when I get more batteries I will be getting the name brand one's.
I realize that the prices are different, For 1. most likely they put a little more effort in making good quality batteries. For 2, They are upgraded and clam to have a higher flight time than the name brands, but I didn't get them for that reason nor do I think they are better. for 3, they come in 2s. It would cost more if you bought them one by one.
rdonson, I agree one what you said. I didn't get the lowest costing batteries I could find. I bought them because they had high rating by other pilots that bought off brand batteries. sure there was cheaper batteries at that time, but I knew that the cheaper the less quality I would get. If someone makes a cheap battery, they can sell it for cheap. But If someone makes the same one but higher quality and better, they are going to sell it for more. If someone makes a good batteries and sells it for cheap than they are going to be losing money. That's why I'm against buying off brand batteries that are already low in price, then go on sale ? I don't think so.
I apologize If my works are blute and crude. I know now that I wrote my first reply like I was telling you guy's off. I don't mean any disrespect to anyone of you guys. I came here to learn from you guy's and look forward to getting to know you guy's more. Just trying to offer my advice on how I buy my batteries.
Mr. I,