ST – II Series POWER SUPPLIES
USER INSTRUCTIONS
Batteries
When using batteries with this product always consult with the battery manufacturer for a detailed
description of the installation, use and maintenance of the battery.
Ensure battery has being charged for several days before a major camping trip (Leave the power
supply on for at least 2 – 5 days with battery connected).
This product is suitable for charging 12V-Sealed Lead-Acid (SLA) batteries including Valve-
Regulated Lead-Acid (VRLA) batteries both Absorbed Glass Mat (AGM) and Gel batteries.
Charging current is limited to 10A (ST20-II) and 15A(ST35-II).
CAUTION:
Ensure that there is good ventilation from the battery area.
Ensure that cable connections to batteries have the correct polarity and are protected against
accidental short circuit.
Ensure that the shrouding supplied with the battery is fitted to the terminals
Provide visual notification that batteries are being used in area of use.
Before servicing a battery, disconnect the power supply.
Batteries are electrically alive at all times and must be treated with extreme caution. They can
supply high short circuit currents, even if they appear damaged. Take care that dropping or touching
of metal objects onto the battery cell does not cause short circuits. Remove any personal metal
adornment such as a chain, watch or ring, which could cause short circuits and personal injury.
Do not charge non-rechargeable batteries. Failure to do so may result in the battery catching on fire
or possible explosion.
Servicing
Personnel:
This product contains hazardous voltages and energy hazards, which can result in death
or injury. Only properly qualified service personnel may service it.
There are no internal user serviceable parts. Only the fuses located in the “fuse panel” located on
the front panel are serviceable.
Isolate mains power, Vext and battery before servicing.
Replacement of Fuses:
Only the DC output Load and Battery fuses may be replaced.
Fuse ratings:
Load fuses 20A max, Battery Fuse 35A max.
Fuse types:
32V Automotive Bussmann ATC series or Littelfuse 257 series or equivalent
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