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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6. See Charge Controller Settings in the Appendix of this manual. Fortress Lithium Batteries are
compatible with almost all Inverter Chargers and Charge Controllers. Please contact Fortress Power to
learn the recommended settings for any device not explicitly covered in this manual.
4.7 Final Connection of the Installation
Final installation and operation guidelines will be dictated by your Electrician and Installer based on the
overall properties of and procedures for the equipment in your installation and any code requirements
that apply to your region. Fortress Power technicians and sales staff are available to provide any
additional information on the Fortress Lithium Batteries as needed. Please be aware of the potential
electrical hazards before interacting with any and all electrical or mechanical devices. Please take all
necessary safety precautions in your projects and installations.
5. PARALLEL CONNECTION
Fortress Lithium Batteries with the same capacity may be connected in parallel for up to 2 units only.
All wires should be an appropriate gauge and constructed to handle the loads that will be placed upon
it. Heavy gauge, high strand copper wire is the industry standard due to its stability, efficiency and
overall quality. A qualified installer should understand this and must adhere to the industry standard and
published electrical guidelines.
CAUTION! Fortress Lithium Batteries are designed for parallel operation only - do not arrange
in series for increased voltage. Series arrangement can result in damage to Fortress Lithium Batteries
and will void warranty!
CAUTION! For parallel connecting: Maintain identical wire lengths from each Fortress Power
Battery terminal to the common bus. Use identical wire construction from each Fortress Power
Battery terminal to the common bus.
Storage Capacity and total available Amperage is increased by Parallel arrangements. The following
illustration shows two Fortress Lithium Batteries in Parallel. Note the overall Voltage range is not
changed. The available amperage from the system has been doubled. The following illustration shows
two Fortress Lithium Batteries in Parallel.
