• 0 Posts
  • 8 Comments
Joined 2 years ago
cake
Cake day: October 20th, 2024

help-circle
  • U = R x I

    volts (U, probably 19VDC) is constant. The laptop has a resistance ®. This means that the laptop has already dictated the amount of currents (I) that it pulls. You can connect an 100A charger to an phone. The phone dictates howmuch it actually pulling. There is no battery damage/harm in doing so.

    If you charge a battery at full-speed, It can heat up. This is in the long term bad for (Lithium) batteries. That’s where the myth might come from?

    *fixed formula order


  • For USB-C: Tiny little side note here, there are some cheap small-size adapters that overheat. Some adapters thotle down, but some rare ones just blink power on and off, which is bad for lithium batteries.

    Search a good brand, preferably reviewed, and GAN-type. Spend a bit more than the cheapest. Check if it has the right protocol (probably Power Delivery at some voltage) to make sure it charges at a normal speed.

    For a DC charger like OP asked. Match polarity, match Voltage. And at least match the current/watage to make sure you can charge in a reasonable amount of time