3 ms·
"Normal" would be a voltage-current combination, that isn't likely to lead to 10% lost energy just in the cable and connectors alone. 12V @ 2.25A would have be
by bmicraft 3y ago
"Normal" would be a voltage-current combination, that isn't likely to lead to 10% lost energy just in the cable and connectors alone.
12V @ 2.25A would have been much more sensible: With a 100mΩ cable you'd lose 1.8% instead of 10%
- crote 3y agoThe right choice would've been 9V 2.8A, because it's what USB PD-compliant chargers offer. For a 25W charger powering a 25W device, that's the only combination which is guaranteed to be available. Using 5V 5A means you have to essentially use the official power brick, because very few third-party chargers support it. It really sucks.