ORA Ballet Cat Battery Drain: The Overnight Parasitic Draw

Why an ORA Ballet Cat drains its 12V battery overnight

The Ballet Cat is an EV, but the battery that usually goes flat is the small 12V auxiliary battery, not the high-voltage traction pack. That little battery runs the body control module, door locks, interior lights, telematics, infotainment wake-up and keyless-entry receivers. If one of those circuits stays awake after you park, it can pull a parasitic draw all night. A weak or aged 12V battery makes the same draw worse and may fail even if the drain is modest.

Check these first: battery age and resting voltage, terminal condition, aftermarket dashcam or OBD dongle, phone charger left in the socket, interior or boot light staying on, and any door, hood or hatch ajar switch that is not reporting closed. On ORA models, also suspect the telematics box or app polling, infotainment not sleeping, and a body control module that stays awake because it thinks a door is open.

• Measure resting battery voltage after the car has sat for a few hours; a healthy fully charged 12V battery is around 12.6V, and below about 12.0V it is seriously discharged.
• Do a sleep-current test after 30–60 minutes: clamp a low-current meter around the negative 12V cable and compare with ORA’s specification—often well under 50 mA once modules sleep.
• If the draw is high, pull one fuse at a time and watch the meter; that points you to the circuit and module, such as BCM, telematics, infotainment or an interior-light circuit.

Is it safe to keep driving? If the car starts normally, charges the 12V battery while ready, and has no battery warning, a short trip to a workshop is usually fine. But repeated overnight drains will strand you, and jump-starting over and over can stress modules. If the battery is below 12V, the dash dims, or you see multiple electrical warnings, charge or replace the 12V battery and find the draw before relying on the car. Leave high-voltage work to a qualified ORA technician.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.