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iRobot Roomba 500 Series battery and charger

Posted: February 13th, 2024, 11:01 am
by Jesusizu
Hi everyone,
My Roomba 500 Series vacuum cleaner is not charging.
The charging base receives 23 volts and outputs 3 volts when the vacuum cleaner is not placed on it.
The battery measures 14.18 volts when idle (It's empty). It's a Ni-MH 3500mAh battery.
Does anyone know if these measurements are correct and what could be the problem for the vacuum cleaner not turning on or charging?
Many thanks.