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Battery Selection
Selecting Battery Type
Select a battery or system of batteries that will provide your APS with proper DC voltage and an
adequate amp hour capacity.* Select ‘Deep-Cycle’ batteries to enjoy optimum performance from
your APS.Batteries of either Wet-Cell (vented) or Gel-Cell/Absorbed Glass Mat (sealed) construction
are ideal. 6 Volt “golf-cart, Marine Deep-Cycle or 8D Deep-Cycle batteries are also acceptable.**
* Even though APS models are high-efficiency converters of electricity, their rated output capacities are limited by the amp-hour size
of the external batteries. ** You must set Configuration DIP Switch #1, Group A (Battery Type) to match the type of batteries you
connect or your batteries may be degraded or damaged over an extended period of time. See “APS Configuration,” page 5 for more
information.)
Selecting Battery Amp Hour Capacity
Step 1:
Add the Wattage Ratings of your connected equipment to determine the Total Wattage Required.*
Step 2:
Divide the Total Wattage Required (from Step 1) by the battery voltage to determine the DC Amperes
Required.
Step 3:
Multiply the DC Amperes Required (from Step 2) by the number of hours you estimate will pass without
AC power before your battery can recharge to determine a Battery Amp-Hours Required Rough
Estimate.**
Step 4:
Compensate for inefficiency by multiplying your Battery Amp-Hour Required Rough Estimate (from
Step 3) by 1.2 to determine how many amp-hours of battery backup (from one or several batteries)
you should connect to your APS. Note that the Amp-Hour ratings of batteries are usually given for
a 20 hour discharge rate. Actual Amp-Hour capacities are less when batteries are discharged at
faster rates: batteries discharged in 55 minutes provide only about 50% of their listed Amp-Hour
ratings, while batteries discharged in 9 minutes provide as little as 30% of their Amp-Hour ratings.
* The wattage rating is usually stated in the equipment's manuals or on their nameplates. If your equipment is rated in amperes, convert
to watts by multiplying the ampere rating by your nominal AC line voltage (230). ** Your charging amps multiplied by the charg-
ing hours must exceed the discharge amp-hours taken from the batteries between charges or you will eventually run down your bat-
tery bank.
Mounting (Optional*)
(See Diagram 2, p. 32).
User must supply all fasteners and brackets and verify their suitability for use with the intended
mounting surface. Turn your APS PowerVerter and connected equipment OFF before mounting.
• Install two 8 mm (1/4 in.) fasteners (A) into a rigid horizontal surface using the measurements
in the diagram. Leave the heads of fasteners raised slightly above the surface in order to
engage the slots in the APS’s feet.
• Slide PowerVerter forward to fully engage the fasteners in the APS’s feet. Install two 8 mm
(1/4 in.) fasteners (B) into the surface, through the slots in the APS’s two unsecured feet.
Tighten the screws to secure the APS in position.
* Horizontal mounting should be used for all vehicular applications. Due to their size and weight, all APS PowerVerter
systems in vehicles should be mounted on a rigid horizontal (not vertical) surface, mounting plate or bracket before
battery connection.