I have a Phoenix Charger 24/25 (2019 year of production). Like this.
The datasheet says 90-400V DC input is possible. I’m interested in connecting a high-voltage Lifepo4 battery and charging my small 24v battery at home.
The question is. Should I connect DC cables (input from high voltage battery) to the L (plus) and N (minus) terminals? (I see 120-240V input on the label, but the datasheet says 90-265 for AC and 90-400V for DC)
The manual is not clear enough.
If the charger is a switching mode power supply design, then the input AC is rectified anyway before entering the switching stage.
From dimensions, weight - only 3.8kg, very wide input voltage range, picture above, etc. for sure it’s a SMPS.
So, this kind of devices (SMPS) could be powered by either AC or DC.
When powered in DC, no matter how you connect positive and negative on the input, they will “reach” the correct “destination” because of the rectifying diodes at the input.
As per voltages in OP datasheet, 400VDC is about 265VAC multiplied with square root of 2 (1.41), which is correct.
This is correct. The charger can indeed do up to 400VDC. Just the manual never got updated.
I would connect the negative DC supply to the N terminal and the positive to the L terminal. Not that it matters, but it is good practice i would say.
