505 Keystone Rd, Southampton, PA 18966, USA
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(877) 497 6937
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www.fortresspower.com
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• Recommended terminal torque is 7.0 – 7.7 Nm (5.1 – 5.7 ft-lb)
• Power Cabling for the Fortress Power Battery is not included. System Wiring Basics Refer to
published electrical wiring specifications and ratings, refers to the below Battery Cable Sizing Chart.
Your qualified installer or application specifications will determine the wire gauge for your system.
CAUTION: Verify polarity at all connections with a standard volt meter before energizing
the system. Reverse polarity at the battery terminals will void the Warranty and destroy the
batteries. Do not short circuit the batteries.
4.5 Connection Terminals
The Fortress Lithium Batteries are equipped with two M8 threaded terminals with a lock washer and
nut. The right-hand stud resides in a red high temperature molded insert. This connection is for the
positive lead. The left-hand stud resides in a black high temperature insert. This connection is for the
negative lead. 10mm ring terminals along with proper size wiring cables are required to connect battery
to inverter/charger. Do not reverse polarity, doing so will void warranty. Use a volt meter to check polarity
before connecting terminals.
Water Resistant Plastic Terminal Covers are also included and will be in place when your units arrive.
The boots are to be placed over the cable terminations and will stretch to form a water-resistant seal
around the base of the molded inserts and terminal connections.
NOTE! Without exception, product experiencing terminal burn out will not be warranted.
4.6 Mounting Hardware
The Fortress LFP-5 battery is designed to sit on the floor or mount on the wall. It’s recommended to put
the Batteries on the wall to avoid flooding or in some cases earthquake vibrations. Please refer to the
Fortress Lithium Battery Data Sheet for weight and dimension.
Mounting the battery pack to a wall
Make sure to leave a space of at last 2.18in (55mm) in between the battery pack and the wall. At least
5in (127mm) between each unit.
