4
Battery Selection
54 DC Amps × 5 Hrs. Runtime
=
270 Amp-Hours
Match Battery Amp-Hour Capacity to Your Application
Select a battery or system of batteries that will provide your Inverter with proper DC voltage and an adequate amp-hour capacity to power
your application. Even though Tripp Lite Inverters are highly efficient at DC-to-AC inversion, their rated output capacities are limited by the
total amp-hour capacity of connected batteries plus the output of an alternator when one is used.
• STEP 1) Determine Total Wattage Required
Add the wattage ratings of all equipment you will connect to your
Inverter. Wattage ratings are usually listed in equipment manuals or on
nameplates. If your equipment is rated in amps, multiply that number times
AC utility voltage to estimate watts. (Example: a drill requires 1.3 amps.
1.3 amps × 230 volts = 300 watts.)
NOTE: Your Inverter will operate at higher efficiencies at about 75% - 80% of nameplate rating.
• STEP 2) Determine DC Battery Amps Required
Divide the total wattage required (from Step 1, above) by the battery voltage
to determine the DC amps required and multiply by 1.2 to account for
conversion losses.
• STEP 3) Estimate Battery Amp-Hours Required
Multiply the DC amps required (from Step 2, above) by the number of hours
you estimate you will operate your equipment exclusively from battery
power before you have to recharge your batteries. This will give you a
rough estimate of how many amp-hours of battery power (from one or
several batteries) you should connect to your Inverter.
NOTE: Battery amp-hour ratings are usually given for a 20-hour discharge rate. Actual amp-hour capacities
are less when batteries are discharged at faster rates. For example, batteries discharged in 55 minutes
provide only 50% of their listed amp-hour ratings, while batteries discharged in 9 minutes provide as little
as 30% of their amp-hour ratings.
Example
Tools
300W + 220W + 20W
=
540W
Drill
Orbital Sander
Cordless Tool Charger
Appliances
300W + 140W + 100W
=
540W
Blender
Color TV
Laptop Computer
Mounting
WARNING! Mount your Inverter BEFORE DC battery connection. Failure to follow
these instructions may lead to personal injury and/or damage to the Inverter and
connected systems.
1
2
3
Tripp Lite recommends that you permanently mount your Inverter
in the configuration illustrated below. The Inverter features integral
mounting brackets on the front and rear of the unit. The user must
supply mounting hardware and is responsible for determining if
hardware and mounting surface are adequate to support the weight
of the unit.
Using the measurements as shown in the diagram install two user-
supplied fasteners
, leaving the heads slightly raised. Slide the
unit over the fasteners to engage the mounting bracket slots
.
Tighten fasteners. Install two additional fasteners
over the
remaining mounting bracket.
3
2
1
1.2 x 540 watts ÷ 12V =
54 DC Amps