Trojan Flooded - Charging Procedures

TROJAN BATTERY
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4.4.2 Charging
Proper charging is imperative to maximize battery performance. Both under- or over-charging batteries
can signicantly reduce the life of the battery. Most chargers are automatic and pre-programmed, while
others are manual and allow the user to set the voltage and current values.
AGM and gel batteries should always have temperature compensated charging.
î Batteries should be fully charged after each use. “Use” is dened as at least 30 minutes
of runtime.
î Deep-cycle ooded/wet charging guidelines: Refer to Table 4 and Diagram 4.
î Deep-cycle AGM charging guidelines: There are various ways to charge AGM batteries. For
optimum performance and life, Trojan recommends a 3-step prole as shown in Diagram 5 and
following the guidelines in Table 5.
î Deep-cycle gel charging guidelines: Refer to Table 6 and Diagram 6.
î Before charging, make sure the charger is set to the appropriate program for deep-cycle ooded/wet,
AGM or gel, depending on the type of battery you are charging.
î Lead acid batteries (deep-cycle ooded/wet, AGM or gel) do not have a memory eect and therefore
do not need to be fully discharged before recharging.
î Charge only in well-ventilated areas.
î Check electrolyte levels in deep-cycle ooded/wet batteries to make sure plates are covered with
water before charging. Refer to Section 4.2.
î Check that all vent caps are secured properly on the battery before charging.
î Deep-cycle ooded/wet batteries will gas (bubble) towards the end of charge to ensure proper
mixing of the electrolyte.
î Never charge a frozen battery.
î Avoid charging at temperatures above 122°F (50°C).