Guide

TROJAN BATTERY
10
TROJAN BATTERY
10
03 Preventative Maintenance
3 .1 Inspection
î Examine the outside appearance of the battery. The tops of the batteries and terminal
connections should be clean, free of dirt and corrosion, and dry. Refer to Cleaning section 3.3.
î If uids are on the top of a deep-cycle ooded/wet battery this may mean that the battery is
being over-watered or overcharged. Refer to Watering section 3.2 for the proper watering
procedure. If uid is on the top of a deep-cycle AGM or gel battery this means that the battery is
being overcharged and the performance and life will be reduced.
î Check battery cables and connections. Replace any damaged cables. Tighten any loose
connections. Refer to Torque Values section 2.2.2.
3.2 Watering (deep-cycle ooded/wet batteries only)
Water should never be added to deep-cycle AGM or gel batteries, as they do not lose water during use.
Deep-cycle ooded/wet batteries need to be watered periodically. The frequency depends upon battery
usage and operating temperatures. Check new batteries every few weeks to determine the watering
frequency for your application. It is normal for batteries to need more watering as they age.
î Fully charge the batteries prior to adding water. Only add water to discharged or partially
charged batteries if the plates are exposed. In this case, add just enough water to cover the plates
and then charge the batteries and continue with the watering procedure below.
î Remove the vent caps and place them upside down so that dirt does not get on the underside of
the cap or for Plus Series™ batteries, simply ip open the cap. Check the electrolyte level.
î If the electrolyte level is well above the plates then it is not necessary to add more water.
î If the electrolyte level is barely covering the plates, add distilled or de-ionized water to a level 1/8”
(3 mm) below the vent well (this is the plastic shield inside the vent hole) for standard batteries
and to the maximum (MAX) level indicator for Plus Series™ batteries.
î After adding water, secure vent caps back on batteries.
î Tap water may be used if the levels of impurities are within acceptable limits. Refer to Table 3 for
Water Impurity Limits.