The charging system on our bike has the tendency to make the battery fluid disappear. And the Battery Tender owners manual it says to check the fluid level periodically during storage.
When using a standard 'flooded' battery I make checking the battery fluid a regular maintenance check item, always topping up with DISTILLED water. Check the post adapters while you're there too.
The last 'flooded' battery I used was replaced after five years and 50,000 miles. And it was still working fine, but noticably weaker, and I had a road trip coming up so it was replaced before it failed.
Hope this helps.
When using a standard 'flooded' battery I make checking the battery fluid a regular maintenance check item, always topping up with DISTILLED water. Check the post adapters while you're there too.
The last 'flooded' battery I used was replaced after five years and 50,000 miles. And it was still working fine, but noticably weaker, and I had a road trip coming up so it was replaced before it failed.
Hope this helps.