Caution! This charger is intended for use with rechargeable Lead Acid type battery only: Flooded, Gel, AGM, SLA, VRLA
and SLI (starting / automobile). Use with any other type of battery may cause damage or explosion.
Charger Safety Features:
o Reverse Polarity protection
o Short Circuit Protection
o Cooling Fan
o Optional Grounding Screw on back of charger
o Low voltage turn-on (load sensing)
- Charger requires a minimum battery voltage to begin charging cycle. This protects against trying to
charge a dead or shorted battery. Lower LED would remain off when connected. Minimum voltage is
1/3 charger rated voltage (example: 24 volt charger, minimum battery voltage requirement is 8 volts)
o Safety Timer shut off
- If the battery is not capable of reaching the charger’s maintenance mode in an appropriate amount
of time, 16-18 hours, the charger will time-out and terminate its charging current output. Both
upper Red LED & Lower Green LED lights will flash. Charger will require to be manually reset when
this occurs. Turn charger OFF, wait 10 seconds and turn back ON. Check battery’s electrolyte level.
If flashing LEDs safety timer function repeats on next charge cycle, discontinue charging and have
battery checked. After many charge cycles and time a battery’s end of charge current requirements
increase and the charger may not switch into float mode and time out. A poorly maintained battery, a
battery with heavy sulfation or a shorted cell will effect charger switching into float mode.
- Note: Brand new battery (first 1-5 charge cycles) may exhibit safety timer shut off function.
Multiple new batteries operating as a single battery pack may require several charge cycles to
normalize to each other. Manually reset charger OFF then ON. Condition will cease and charger will
automatically switch to maintenance float mode after several initial charge cycles.
Charger is equipped with a final stage maintenance float mode. You may leave charger attached to the
battery for prolong periods of time and it will not overcharge the battery. Lead acid battery prefer to be in a
charged state. It is recommended to charge your battery after each use. Leaving the charger attached in float
mode will aid against sulfation build-up on the battery’s lead plates and maintain battery in a ready state.
When charger is turned off the LED lights may flash for several seconds as power dissipates from charger. If
AC power is interrupted by a power outage or other, the charger will resume its charge/maintenance cycle
when AC power is restored.
Flooded / Gel or AGM Switch: Choose proper lead acid battery type before connecting charger.
- Flooded: Battery with removable caps / distilled water can be added to electrolyte
- Gel/AGM: Maintenance free batteries, sealed / VRLA
Proper charge rate (charger amperage rating) must be used to prevent damage to battery. Contact battery
manufacturer for recommended charge rate. For a single battery or batteries connected in series (negative to
positive), the battery amp hour (Ah) capacity is that of a single battery. For batteries connected in parallel
(positive to positive and negative to negative), the battery Ah capacity is cumulative of all battery’s Ah.
Only batteries of same Ah rating, size and condition/age should be connected in series or parallel. Combining
batteries of different capacity, age or condition will result in an unbalanced charging of individual batteries in
the pack resulting in possible battery damage.
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