faulty already after about 30 minutes!

I had ordered 2 batteries plus charger, the goods came quite quickly, I was surprised at the beginning of the price / performance ratio.
Now after the Easter holidays in Südallgäu has completely given up the ghost after only 30 min. recording one of 2 batteries, (I had 2 batteries of white & the Original Battery GoPro case & all about exposed to the same stress ...), now I can charge him as I am funny, that thing is dead. The second is still working, am times gespannnt for how long, the charger liegts not because the other batteries can be recharged ...
the original battery of GoPro with me for about 7 Mo. operating & running without problems.
according to my experience now, I believe, prefer to pay a little more and to get the original, this lasts longer through a single charge than that of white.