Voltage

Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. The answer to your question depends off of a number of factors. 1) How well charged is the battery? 2) What is the rating of the battery? 3) What accessories are being used while the vehicle runs? 4) What is the reason for your question? Generally speaking, the vehicle always runs off the battery alone. The alternator and charging system exist to keep constant power flowing into the battery. The battery provides the steady 12.4 (or so) volts constantly to the vehicle to operate it properly and continuously. That said, the vehicle is not made to run without charging system operation replenishing the battery, and with all highly technical features of modern vehicles present - there's quite a draw on electrical resources continually. As a result, I would say - the vehicle will run minimally on battery power alone. Hope this helps. For further hands on questions and answers - reach out to a shop near you. https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!