Congratulations
Congratulations on your purchase of the POWV3.5 Battery Backup System! This product has been designed to provide you with peace of mind that you will always have
a reserve power source to start your vehicle in the event your main battery fails. Please read the directions that follow to familiarize yourself with the product to ensure
you obtain the best results from your equipment.
Safety Precaution
The POWV3.5 contains a high-power battery that is not user replaceable. No parts of the product are user serviceable. Because the product requires direct connection
to the vehicle’s electrical system, it is highly recommended that the POWV3.5 be installed by a qualified professional 12v installation technician. The POWV3.5 is to be
installed inside of a vehicles cabin or trunk, and as such, it is important to use the proper gauge cable to maintain the current needed for operation of the POWV3.5.
It is also extremely important that the power cable is protected from being damaged or shorted in its run from the POWV3.5 to the vehicle’s battery. The POWV3.5 is
designed with built-in protection circuitry to protect itself, but it will not prevent possible damage to the vehicle in which it is installed if the power lead from
the vehicle’s battery to the POWV3.5 is shorted. If you have any questions or problems with your product, please contact a VOXX certified retailer, installer, or VOXX
Technical Support at 1-800-645-4994.
Important Notice
Installation of the POWV3.5 requires careful planning and preparation. The POWV3.5 should be installed under a seat or in a trunk, in a location where the GO/Status
button can be accessed, and the indicator LEDs are visible. It should not be installed in the engine compartment or any other location where it will be exposed to
extreme temperatures.
Because the POWV3.5 is an auxiliary power source which provides a jump-start assist to a vehicle battery, it must be connected in parallel with the vehicle’s battery to
operate. The ground connection should provide a low resistance path to the chassis (if the vehicle has a negatively grounded chassis) or connection can be made directly to
the vehicle’s negative battery terminal. Similarly, the positive connection should provide a low resistance electrical connection to the vehicle’s positive battery terminal.
The gauge of cable to be used is dependent on the distance from the POWV3.5 to the vehicle’s battery (See Installation Manual for Wire Gauge/Distance Guide). To
allow high current amperage to flow freely once the POWV3.5 is engaged, no fuse should be used in the electrical path since most 12v fuses and/or circuit breakers are
not designed to withstand high current amperage flow. This also requires special attention to wire routing so that no potential shorting of the power cable occurs.
Warnings
Do not place or store items near or on top of the POWV3.5 to avoid damage to the system.
The POWV3.5 is covered by multiple patents licensed to VOXX International.
Patents/Pending Patents: US10840732B2, US20210135466A1, US20200136408A1
1
Table of Contents
Overview & Features ........................................................................................................................2
Accessories .........................................................................................................................................3
Controls and Indicators Diagram ..................................................................................................4
General Installation ......................................................................................................................5-6
Troubleshooting ...............................................................................................................................7
General Specifications .....................................................................................................................8
