7.4 BATTERIESThe service life of the battery is from 3 to 5 years, depending on the operating temperature and on thenumber of discharge cycles.As a healthy battery is critical to the performance of the UPS, an automatic quick battery test is performedregularly to ensure failsafe operation (see section 4.5). When the condition of the battery is critical, a'replace battery' alarm will be activated (see 4.4 and 4.4.6). Replace the batteries as soon as possible.General guidelines:• When replacing the batteries, use all of them of only thesame type and size.• Never short the battery terminals. Shorting may cause thebattery to burn. When working with batteries removewatches, rings or other metal objects and only useinsulated tools.• Avoid charging in a sealed container.• Proper disposal of batteries is required: refer to your localcodes for disposal requirements.• Never dispose batteries in fire: they may explode.• Never disassemble or reassemble batteries; their contents(electrolyte) may be extremely toxic. If exposed toelectrolyte, wash immediately with plenty of water, if eyecontact occurs flush with water and contact a physician.Don’t throw batteries away,treat them as harmfulwastemodifications reserved 36 User manual GT Series 5/6/8/10 kVA UPS 1.0 (US)