12.39V would be well under 50% charged. Sometimes these "smart" chargers say it's charged when the charging terminals aren't making a good contact. I prefer an old fashioned charger with a charging current display and so you can see if it is charging or not and the current should decrease to zero as it charges. For terminals that blow off the battery I connect one end of a jump lead to the good terminal and the other end to a carbon rod that you find inside 6V cube batteries. I put a mold around the bad terminal and touch the rod to the terminal. The rod glows red hot and melts the lead. Then i feed in a small bit of new lead like soldering.
What does diolch yn fawr mean
Thanks
12.39V would be well under 50% charged. Sometimes these "smart" chargers say it's charged when the charging terminals aren't making a good contact. I prefer an old fashioned charger with a charging current display and so you can see if it is charging or not and the current should decrease to zero as it charges. For terminals that blow off the battery I connect one end of a jump lead to the good terminal and the other end to a carbon rod that you find inside 6V cube batteries. I put a mold around the bad terminal and touch the rod to the terminal. The rod glows red hot and melts the lead. Then i feed in a small bit of new lead like soldering.
sounds like battery issues plague you from time to time aswell ! sounds like a pretty clever method , youll have to make a video on it 👍!