2003-2005 Kawasaki Ultra-150 Jet Ski Factory Service Manual., Page 208Get this manual
14-16 ELECTRICAL SYSTEM Battery
e at elec ol sl Bapcehreaibotthomatllhtehesametrwayyteahaabfoovweid tohuetr.e is any Tt ef electrolyte left in the containero lt ba Netwthpeulbahtteercyontitaifner2g0entliy uotutsof Dhueringttteristime, the or mn electrolyte permeates the special separatorshand the gas
generated by chemical reaction is releasedFit he seal capA] tightly into the iller ports until the eal cap is at the same level as the top of the battery
Do not hammerPress down evenly with both handsWARNING
Once you installed the seal cap after filling the battery, never remove it, nor add any water or electrolyte
Initia harge
While sealed battery can be used after only filling with electrolyte, battery may not be able to sufficiently move starter motor to start an engine in the cases shown in the table below, where an initial charge is required before useHowever, if battery shows terminal voltage of 12.6 or more, using digital volt meter, after 10 minutes of filling, no initial charge is necessary