Wet Cell Mucho Thirsty!

So I had forgot to check the water level on my batteries in a few months...checked them...looked very much low....added quite a bit of distilled water to top them off...wow...had no idea they got that low....I hope this will not have ruined them...I have a trickle charge type of unit I use on my small bass boat gel cell and starting battery and I can read volts from that...I suppose if it reads as a certain voltage at this point, its fine?



I have read on this forum that the stock “single stage” converter that I have is very bad about “boiling” out the batteries...that certainly seems to be the case.



I will be going on a quick weekend boondocking trip in 2 weeks - should I do more to check the health of these batteries at this stage? if so what.



Thanks