[jhautz]

Only has a 50W max output so for 5s it means that you can only charge at around 2.7amps, which means around 2 hours to charge a 5000mah 5s pack.

Based on 50W max output or 5A charger maximum.

5s = 2.7A max charge rate
4s = 3.3A max charge rate
3s = 4.5A max charge rate
2s = 5.0A max charge rate

I thought they looked nice too untill I found that out. Its great if you only charge small packs or everything is 2 or 3 s. But for 4 or 5 s large capacity packs its somewhat less than ideal.

Other than that I have seen a couple people use them and they looked nice and easy to use.