To check the battery electrolyte level, it is best to remove the battery from the bike. If the battery case is white, you can look right into it and see where the water level is. Shining a light from the back can make it easier. Use only distilled water to refill.
If the water is low, you can have proper voltage but no capacitance. Run a battery too long with low electrolyte and you can damage the battery.

Be sure to check the charging system on your bike too. The VT1100 seems notorious for a weak charging system.

duke
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