Section III
Operation
006-0006205
UPS-1500 Series
Rev ZC
27 of 60
05/28/2019
Load Power Indicators (LEDs in positions B0 – B3)
The LEDs in positions B0 through B3 indicate the total output power of the UPS (The AC OUTPUT power
plus the optional DC OUTPUT power) according to the table below:
LED Appearance
Description
Indication
B0 Dimmed Green;B1-B3 Off
Total Load Power <25%
B0 Green; B1 Dimmed Green; B2-B3 Off
Total Load Power <50%
B0, B1 Green;
B2 Dimmed Green; B3 Off
Total Load Power <75%
B0, B1, B2 Green;
B3 Dimmed Green
Total Load Power <100%
B0; B1; B2 Green;
B3 Blinking Red
Total Load Power ≥100%
Battery State-of-Charge Indicators (LEDs in positions E0 – E3)
The LEDs in positions E0 through E3 indicate the state-of-charge of the internal battery pack, as well as
whether the battery pack is on standby or being charged (Blinking Amber) or discharged (Blinking Red),
according to the table below.
LED Appearance
Indication
Standby
Discharging
Charging
NA
NA
Battery Charge <10%
Battery Charge <25%
Battery Charge >25%
Battery Charge >50%
Battery Charge >75%
NA
NA
Battery Charge =100%
NA
NA
Battery Charge =100%
(Cell Balancing
is Occurring)