Tesla TI2000GPU-24 - Manual (Page 23)

indicating power cell state of charge and cooling fan is operating.
4-5
CAUTION
Unit may overheat if cooling fan fails.
Do not operate if cooling fan fails.
2. CHECK FOR FULL CHARGE INDICATION - After 2 HR 30 minutes, LED
charge indicator should show a single steady or flashing green LED
bar when fully charged, the last LED bar. AC power may be left con-
nected to unit when power cells are fully charged.
NOTE
Under a full charge, two things will be observable with the unit. A
non-blinking lighted green bar or a blinking green bar at the bottom
of the bar graph, both indicate a full charge.Also the fan will dis-
play ratcheting but not come on whe the unit is fully charged.