Battery Information
Important Safety Precautions
The installer must take these precautions:
• Wear protective clothing, eyewear, rubber gloves and boots. Batteries contain corrosive acids or caustic alkalis and
toxic materials and can rupture or leak if mistreated. Remove rings and metal wristwatches or other metal objects and
jewelry. Do not carry metal objects in pockets where the objects can fall onto the batteries or into the Tucson Micro
inverter system.
• Tools must have insulated handles so that they will not short battery terminals. Do not allow a tool to short a battery
terminal to another battery terminal or to the cabinet at any time. Do not lay tools or metal parts on top of the batteries,
and do not lay any objects where they could fall onto the batteries or into the cabinet.
• Install the batteries as described in this manual. When connecting cables, never allow a cable to short across a
battery’s terminals or to the cabinet.
• Keep the cable away from any sharp metal edges.
• Install the battery leads so they cannot be pinched by the Tucson Micro inverter system cover/door.
• Where conductors may be exposed to physical damage, protect conductors in accordance with NEC requirements.
• Full voltage and current are always present at the battery terminals. The batteries used in this system can produce
dangerous voltages, extremely high currents, and possible risk of electric shock. Batteries may cause severe injury if
the terminals are shorted together or to ground (earth). Be extremely careful to avoid electric shock and burns caused
by contacting battery terminals or shorting terminals during battery installation. Do not touch uninsulated battery
terminals.
• A qualified electrician who is familiar with battery systems and required precautions must install and service the
batteries. Any battery used with this unit shall comply with the applicable requirements for batteries in the standard for
emergency lighting and power equipment, UL 924. Cabinets are designed to be used with, and batteries must be
replaced by identical cells or a Manufacturer approved equivalent. If using substitute batteries not supplied by the
Manufacturer, the unit’s UL listing will be void, and the equipment may fail to perform properly. The installation must
conform to national and local codes as well. Keep unauthorized personnel away from batteries.
Tools
The following tools are required to install the system batteries: long nose pliers, digital Volt-Ohm meter, safety glasses.
CAUTION:
Always use insulated tools for battery installation.
Battery Installation and Connection
1. Lead-Calcium Battery Models: TUC-MC-32 and TUC-MC-55 are supplied with a single 12VDC Lead Calcium battery.
To install the unit battery, place the battery within the system housing and connect the black battery negative fly lead to
the battery’s black (B-) terminal. Connect the red battery positive fly lead to the battery’s red (B+) terminal.
2. Nickel Cadmium Battery Models: TUC-MC-20N and TUC-MC-35N are supplied with a single 12VDC Nickel Cadmium
battery. To install the unit battery, place the battery within the system housing and connect the black battery negative fly
lead to the battery’s black (B-) lead wire. Connect the red battery positive fly lead to the battery’s red (B+) lead wire.
Battery Voltage Check
Using a digital volt-ohm meter, check for correct nominal battery voltage between DC Input NEG and POS wires. Voltage
reading should be ±10% of system’s nominal 12VDC operating voltage.
Tucson Micro Series
Installation Instructions
10070249
R
EV 1 - 06/21
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800-533-3948 www.barronltg.com
