lasse55 - for your risk only !!!
You must set charger in NiMh mode, current 0.1 A.
Start charge with permanent controlling voltage on akkum. Maximum possible voltage on akkum is 12 V.
Best metod is - controlling each S for NO MORE 4.2 V.
if there is more - he a fired !!!
After 5 minuts disconnect akum. check voltage. If it more than 9V - charge it in standart balansing mode as LiPo.
Mine arrives today, it looks really good.
Cells were at 3.83, 3.84, 3.85 and 3.84.
I expected that the weight might be an error because the weight they give is less than of other zippy's and turnigy's with the same specs without hard case, but it was actually 4 grams lighter, total 524 grams.
This batteries are perfect for my big multi rotor. I use two of them parallel and they keep my copter flying longer than batteries that are higher rated. The value for the price is more than excellent.