Mains sockets with built in USB chargers?

[Mistroma]

I think USB sockets run at 5V, so not sure why 5.2V isnt really useful?

I can understand why less than hoped for current is disappointing but, given that batteries tend to dictate the current drawn, rather than the charger always supplying its max current, i wonder if there might not be a problem? im not saying there isn't, merely maybe.

ive had an ipad tell me there isnt enough current to charge it, so i agree that a USB may not be what it says it is, i.e. 2.1A

I simply meant that 5.2V with no load wasn't really significant as it fell to 4.3V if I tried to take max. 2.5A (1.6 & 0.9) from the charger (it only managed to supply about 0.6A).

If you read both posts you should see that I compared output of several mains and 12V chargers using the same devices. I didn't give details of the devices being charged, tablet and phone, but both were around 50% state of charge. I was comparing output for each charger when supplying the same device.

All I was pointing out was:

1) Mains chargers I'd used seemed to give decent output current and voltage remained at 5V
2) Cheapo 12V charger didn't give anything like the same current and voltage was well below 5V
3) Older cheap 12V charger managed to supply a decent current and voltage remained at 5V

It therefore seemed to be obvious that the newer 12V charger wasn't really performing at anywhere close to the figures quoted. I didn't make the mistake of claiming low output when trying to charge devices already fully charged.

The eBay supplier agreed it wasn't working and immediately refunded my money.

 

[PetiteFleur]

I've fitted USB double sockets in the house and they are perfect, bought from Aldi I think but on the boat I've fitted double USB sockets on the boat and they worked fine last year - 2 fitted in the saloon and one in the rear cabin.

 

[tudorsailor]

I too have swapped sockets over to have ones that include USB socket. We have an inverter on board and also do use shore power when on the quay or in a marina. So AC is often present. Having a charge point means that guests phones no longer clog up the chart table where I have the 12v socket (with a 4 port USB adapter)
TudorSailor

 

[davidpbo]

You don't have a battery charger?

I have a cheap one on board to charge the battery in emergency as we now have an electric start outboard.

 

[JumbleDuck]

Apple are already dropping USB A in favour of USB C so these built in sockets are going to look pretty silly soon.

There is no reason why we can't have charging cables with USB-A at the charger end and USB-C at the socket end, just as we currently (hah!) have cables with USB-A at one end and micro-USB at the other.

 

[Spyro]

Doesn't have to one or the other. I've got a double mains socket with usb outlets for when on shore power and a cigarette lighter plug in type when not. Everyone that comes aboard now has phones, tablets Ipads etc so it's handy to have more than one at times. I don't have any concerns about the mains type. They are sold to be used in houses and left permanently connected.