What are the battery light indicators on the ProBook 440 G3?
When AC power is connected: White light indicates battery charge greater than 90 percent, Amber indicates 0 to 90 percent charge, and Off means the battery is not charging. When AC power is disconnected: Blinking Amber indicates low battery level (blinking rapidly at critical level), and Off means the battery is not charging.
From the official HP ProBook 440 G3 Notebook PC manual, page 7
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