Heavy Duty Battery

How long can I run my laptop off my car battery?
Hi. I have a samsung a10 laptop and recently bought a car charger for it. I just was to know how long I can safely run the laptop off my car battery without wearing out the car battery? The laptop battery is a lithium model and the car battery is a cheap semi-heavy duty type.
Also if I just left the laptop battery to charge over night would this stop the car starting next morning. The laptop requires 18w=20w.
Absolutely do NOT leave it charging overnight without the car on. This WILL drain the battery. Even if it does, it’s just not good practice to have the battery slowly drained on your car.
Your car battery goes through a lot more wear and tear than charging a laptop will do to it. It will be fine if you just plug it in while you’re driving to work, school, or the strip club.
BEP Heavy Duty Battery Switch Selector
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