HP 82241A charger replacement polarity

[ijabbott]

(01-27-2021 07:04 AM)edwincool2 Wrote:  Does anyone have any experience with non-original chargers?
I found one on amazon made by Kircuit, you can find the link here: https://www.amazon.com/Kircuit-Adapter-I...B081SP325G

I have used a DC 12V 3A adapter with a 5.5mm outer / 2.1mm inner diameter barrel jack.

Quote:Is it worth it? Will I fry my new printer?

Only if the voltage is too high. The polarity doesn't matter because the original adapter was AC and it gets rectified to DC in the printer.

Quote:Also, in the manual it specifies not to use the AC adapter without batteries. What is the reason for this?

The original AC adapter was a bit wimpy and couldn't supply enough current. The batteries may not be required if you use a beefy enough external power adapter.