cheap OSD to measure Vol/Amp

[goraplx]

Can someone advise me , what OSD i could buy just to see Voltage / Amps on my GoPro screen ?..

I use 4s lipo and 5s A123 cells. OSD has to work with 18 V.
Looking for somethink with good value for the money. Dont want spend too much for items like EzOSD.

Thanks.

 

[Jessestr]

Hehe, need the same. Had the TBS CORE but it didn't seem to like my 4S. Overheated .. but it should support up to 10S. Might had a faulty one