ADT Unimode 400 Multi-Net Installation Manual page 104

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3-4
Maintenance-free sealed lead-acid batteries used in the system do not require the
addition of water or electrolyte. These batteries are charged and maintained in a fully
charged state by the main power supply's float charger during normal system operation.
A discharged battery typically charges at 1.5 A and reaches the float voltage of
27.6 VDC within 48 hours.
Follow the local AHJ and manufacturer recommendations for battery replacement
intervals. Minimal replacement battery capacity appears on the control panel marking
label. Immediately replace a leaking or damaged battery. You can get replacement
batteries from the manufacturer.
Warning: Batteries contain Sulfuric Acid which can cause severe burns to the skin
and eyes and damage to fabrics.
• If a battery leaks and contact is made with the Sulfuric Acid, immediately
flush skin and/or eyes with water for at least 15 minutes. Water and household
baking soda provides a good neutralizing solution for Sulfuric Acid.
• If Sulfuric Acid gets into eyes, seek immediate medical attention.
• Ensure proper handling of the battery to prevent short-circuits.
• Take care to avoid accidental shorting of the leads from uninsulated work
benches, tools, bracelets, rings, and coins.
Shorting the battery leads can damage the battery, equipment, and could cause
injury to personnel.
Battery Checks and Maintenance
Unimode 400 Installation PN 50710:A 10/22/97