Evening,

I've been trying to get some information on these batterys. (Seamaster M70 - not the gold edition)

My boat came with two and i've tried to find information on them but I can only find specs

First question - Are they a true Calcium batteries and when recharging do you select Calcium on the intelligent battery chargers

Second question - They have what looks like screw plugs on the top, but if they are calcium do i need to remove the plugs and top up with distilled water, or are they maint free on these models

Thanks for any replies, ive searched and searched without finding the info I need