I have this victron 24v 3000w, when there is a grid connection or i switch on my gas generator, it indicates Mains on, also indicates Bulk charging and after Hours of charging, it would go straight to battery low, i charged with my solar panel to verify my batterys health and i had roughly 9hrs backup, its as tho the inerter is showing all signs that it is charging the battery except it doesn't increase the battery voltage. What could be wrong ?