was down at boat this weekend doing stuff and decided to check the 2 hand held's, the s12 was working so put it on charge but the standard horizon one has just a blank screen, so put that on charge as well, just to see if either was functional as I don't know how old they are or if I need to replace them .I didn't find any info for the s12or the other on the boat but have downloaded one for the standard horizon.
the other bit is they were only on charge for about 1hr so didn't really give them chance to charge.
will try them again next time I go down there. will let them charge overnight and see what works.
phil