thank you for replay.
i am shure , these are gel batteries.
i got unbelievable good deal on them, some one else ordered batteries , but the lady made a mistake when filing up the form....
any way i paid really good price, was afraid maybe is something wrong, but the voltage was 12.43V and i have warranty, so took the risk.
the shop is not for rv, is for trucks, and this is in europe.
on the picture attached is my set up, now i am bulding metal frame.
on the battery it says that should lower the voltage to 14.2V when charging, and in manual of magnetek is writen maximum 14V.
so seems ok.
i also think of puting discontect switch, so when i am pluged in to shore line, after some time i will be able to disconet the batteries and not charge them.
what do you think ?