Help i am a Rookie

[Maximilian Hohmann]

Hello!

(03-12-2023 07:37 AM)Siegfried Wrote:  Can the danger of the original chargers be overcome by replacing them with a regulated voltage supply?

Yes of course! A regulated voltage supply set to anything between 2.5 and 3.0V can be used safely with or without a battery in place. When you connect it via the charging port you need to add 0.6V because of the single-diode rectifier inside the calculator. Connecting it that way to something like 3.2V is safe and the diode will protect the calcultor against reverse polarity. Connecting the power supply directly to the battery connectors requires extra care because getting the polarity wrong will kill the calculator in an instant.

Regards
Max