I have several devices that need a 5V /1-2A dc power supply. For each device the power is provided by a plug into a mains 220V-outlet with a single USB-outlet. Similar as for the Homey Pro.
I would like to reduce the number of plugs by using a multiport USB-charger that can provide multiple 5V/1-2 A dc devices from one mains-outlet.
But I am wondering if that is safe as charging a device is a different task than providing a constant level 5V -power.
On internet I only find USB- Chargers, no USB-power supply.
In fact there is no difference, the specs show what power is the max it can deliver contignously, in case of overload, the temperature of the charger will increse. My rule is, the temperature may never be warmer then “handwarm”. The minimum power-supply for Homey is 2Amp. In practice the current will hardly be over 1Amp.
Hoi!
Yes, actually the powering and charging are little bit different tasks… or at least in edges the supplied power is different. For example delivered power may be 20V5A…or more. But as i told, this is a edge when the both ends (charger/“phone” + cable ) are compatible and able to agree the specific power scheme.
For us this is and stays (at least now) the edge. For us it’s important the continuous - stable - 5V current. Yes, this is the base and all chargers must be able to delivery at least that. But there is a little trick. What’s the current the (multi)-charger can deliver on 5V? Unfortunately the most of chargers “in internet” claiming, they have 5; 10; 25;… A - BUT they can handle that as SUM OF ALL OUTPUTS ( measured as a rating of main rectifier). So… when searching to charger ( yes, You can use such multi-output charger - as me, using it ~3Y now without any visible problems) - be careful and check the descriptions about every single/individual output port capability. PS. there may be also a groups of output ports ( for ports 1&2 3A; for ports 3&4 2.4A … or something like that) so again… RTFM (read the fine manual) before buy.
