I've bought lipos from them and have had good luck. I did have after a year my two 1000 mah lipos puff but that may have been that i stored them in my garage over the 100 degree summer. i bought two more to replace them. key thing is to buy them only when in stock because they have trouble sometimes with getting new stock in when it goes out and the backorder system isn't great. They have a US number you can call if they puff prematurely and you can get full replacement. Just be patient with them it seems like some people get too irate to quickly if they have problems.