4.5 BATTERY MANAGEMENTMaximum battery life and reliability are obtained by the following features:• Battery connection testAt start-up the unit performs an automatic test to check that the battery cabling and fuses areproperly connected.If the test detects a battery disconnection, the corresponding alarm will be generated (see section 4.4.7).• Quick battery testA quick battery test may be launched to check whether batteries are healthy. To start the test,press ‘UPS on’ button (see section 4.1) for 0.5 seconds when the unit is in “normal operation”conditions (see section 4.3.1).In case of failure the corresponding alarm will be generated (see section 4.4.6 / 4.4.7)• Deep battery testA deep battery test will update the runtime calculation and may be started via the UPS monitoringsoftware. The test will start only if the battery charge level is higher than 90% and the load must beat least 20% of the nominal rating. The runtime calculation will be updated only if the test can rununinterrupted till complete battery discharge.NOTEWhen executing a deep battery test the available runtime in case of mainsfailure may be shorter than normal. Don’t execute this test if reduced batteryruntime is not acceptable.NOTEIt’s possible to reset the battery test, by pressing the ‘UPS off’ switch (see 4.1)for 1 sec. The UPS will switch to bypass mode.modifications reserved 31 User manual GT Series 5/6/8/10 kVA UPS 1.0 (US)