[merged topic] Battery bank compatibility with the V

merged

#21

Probably before your time (or maybe not available in your area) but they developed the Qualcomm pdQ - one of the earliest “smartphones” http://americanhistory.si.edu/collections/search/object/nmah_1191491


#22

There wouldn’t be a problem because it doesn’t use the Qualcomm tech. But you would need to use the AC socket, which means converting from DC to AC and back to DC, plus jumping from 3.7V up to 120V and down to 5V again. The USB ports would “maybe” charge the tablet, but it would be super slow.


#23

Hmm, Wikipedia doesn’t know about this :smile: and nope, of course it wasn’t available here… At the time cellphones were hardly available at all, and even not everybody had the luxury of a landline phone (thanks soviet union dictatorshi*) :stuck_out_tongue_winking_eye: (p.s. at the time we were already independent but you know, economy takes time to get back to normal)


#24

I have about 3 older macbook chargers laying around the house. They are all magsafe, but would they be able to safely charge the V with the addition of something like this?


#25

This magnetic connector is most probably different from the apple’s proprietary one… So your cable will not work with it. Otherwise, it’s technically just the same as a simple USB-C cable except it’s magnetic :slight_smile:


#26

Just use the wall wart. Are you in Russia?


#27

LOL no. Why are you asking?


#28

As Jeffrey is in the US and there is a love fest with Trump and Putin - perhaps that’s it?:heart_eyes:


#29

A comment you made and soviet union…


#30

Look, the wall charger converts from 120/220/whatever you’re using AC current to 5/9/12V DC current. AC is alternating current so it goes in both directions, DC is direct current that flows in one direction. The wall plug on V’s charger is designed to connect to an AC source in the range of… something similar to 110-250V. If you connected it to a DC source, it would probably be fried. Anyway, the power bank. It has USB ports and those are 5V DC. And it also has a wall socket which is 120V AC. The battery inside is 3.7V DC. So, when you connect something to the wall socket, you actually connect it to 120V AC, which is converted from the battery’s 3.7V DC. And then, the V’s charger converts it from 120V AC to 5/9/12 DC for the tablet.


#31

Do I have to remind you that soviet union occupied about half of Europe?


#32

I gotta go to work. Where are you, and no, of course you don’t.


#33

Right. So it will work, correct?


#34

OK I’m saying this a third time:

HOW can I make it more clear than that? I don’t know… Just tell me if you don’t understand some part of it, I think I made it as clear as possible…


#35

He’s in Lithuania.

And the gist of it is - if you have a DC supply that you want to use to charge a DC device, it’s best not to convert it to ac, then back to dc. (as in, plugging your wall wart into the 110V plug on the accessory battery.) You CAN do it, but you lose power when you convert.

I run off grid for weeks at a time in the summer - relying on the 12V secondary battery in my Westfalia that charges while I drive. If I can run everything as DC (so 12V accessories) the battery lasts noticeably longer.


#36

Yes, then, it is. Doesn’t matter if it is inefficient, as these things run the device while charging. You see, if I’m busking, out of power = out of work!


#37

Let’s not have a political debate here please.


#38

Well, it’s inefficient and that means you’re wasting your money on extra battery capacity that you can’t use. Better get a USB-PD charger that can charge your V without DC-AC-DC conversion, that way even if it’s capacity is smaller it will charge your V more :slight_smile:


#39

And if you can charge it while it’s charging the V you don’t need a powerbank because you could just use your normal charger instead …


#40

Cool. I bought a Ford hi top van recently, with the same idea in mind. I don’t have the second battery or inverter yet. I need to figure out how to do that without spending a lot of money.

As to a computer dc-ac-dc then, what about the OTHER Rav Power battery that I posted?