Can a sedan start while being charged?
2 Answers
A sedan can start while being charged, and the specific reasons are as follows: 1. While the car battery is charging, it can start the engine, but the connections must be secure. 2. The battery people refer to is a lead-acid battery. It is mainly made of lead and its oxides, with a sulfuric acid solution as the electrolyte. 3. It uses lead plates filled with sponge-like lead as the negative electrode, lead plates filled with lead dioxide as the positive electrode, and a 22-28% dilute sulfuric acid solution as the electrolyte. 4. If using a dedicated charger for charging, do not start the engine while charging. If the battery is dead and another car is used to jump-start it, the engine can be started while charging. Below is relevant information about the battery: 1. The battery is an important component of a car and also a wear-prone part. When the engine is not started, the battery is responsible for powering all the electrical components in the car. After the engine starts, the alternator takes over powering the electrical components. 2. When starting the engine, the ignition system needs to work, the starter motor needs to turn, and the fuel supply system needs to operate, all of which require electricity. If the battery has insufficient charge, the engine will not start. When the car is not used for an extended period, the negative terminal of the battery can be disconnected. 3. Periodically, use a dedicated charger to charge the battery. When the engine is not running, avoid prolonged use of in-car electrical appliances, leaving the headlights on for too long, or turning on the air conditioning.
Gasoline cars do become harder to start in cold weather, but some techniques usually help. Over my years as a mechanic, I've seen this often—mainly because the battery's electrochemical reactions slow down in low temperatures, reducing power output and making it tough to drive the starter. At the same time, engine oil thickens like syrup, increasing resistance and causing delayed or failed starts. I recommend checking the battery's health before winter each year; replace it if the voltage is too low. Using low-viscosity winter oil (e.g., 0W-20) helps pistons move more freely, and parking in a garage or using an engine blanket also aids warmth. When attempting to start, gently press the accelerator a few times to prime the fuel pump, and avoid prolonged cranking to prevent draining the battery. If stuck, a jump-start from a friend or a battery warmer can help. Most modern gasoline cars handle the cold fine—they just need extra care. Don’t overlook winter tires and antifreeze checks to avoid other issues.
