@The_Tim I was pretty apprehensive of 10A coming through a cigarette lighter plug and those scrawny wires—I’ve got a double slot USB plug that heats up charging 2 phones! Throw 3 more iPads into the mix and wait for the festive car fire!
@cole103 Yeah I was thinking the same thing. Although to be fair only 6.3A should be going through the actual wire to the three rear ports, right? Still seems like a large-ish draw for as thin as that wire looks.
@cole103@The_Tim Assuming that the DC-DC converters are 80% efficient or better at maximum load, this will draw at most 67 watts from the car to produce 54 watts at 5 volts. With the engine running, the outlet on the car is nominally at 13.8 volts. 67/13.8 is about 5 amps. That means the car charger would be disappating 13 watts as heat.
A typical small DC-DC converter designed in 2016 is probably between 85 and 90% efficient. A 90% efficient would only produce 6 watts of heat.
At these power levels, efficient switching power supplies are actually less expensive to make than ones based on linear regulators. Something based on the classic 7805 would only be able to provide 1.5 amps and would need to dissapate 13 watts of heat. The heat sink and fan would make the device too expensive.
I assume that this product runs the battery voltage over the cable between modules to a second DC-DC converter, rather than trying to run 6.3 amps at 5 volts to the back seat. They can use a much thinner cable at the battery voltage, and still have a very stable 5 volts supply.
Two men in a pub, a typical English gent and a bounder
Man (E.I.): Evening, squire!
Squire (T.J.): (stiffly) Good evening
Man: Is your wife a…goer…eh? Know what I mean? Know what I mean? Nudge nudge. Nudge nudge. Know what I mean? Say no more…know what I mean?
Squire: I beg your pardon?Nudge nudge
Man: Your wife…does she, er, does she ‘go’ - eh? eh? eh? Know what I mean, know what I mean? Nudge nudge. Say no more.
Squire: Well, she sometimes goes, yes.
Man: I bet she does. I bet she does. I bet she does. Know what I mean? Nudge nudge.
Squire: I’m sorry, I don’t quite follow you.
Man: Follow me. Follow me. I like that. That’s good. A nod’s as good as a wink to a blind bat, eh? (elbow gesture; rubs it)
Squire: (not understanding) Are you trying to sell something?
Man: Selling, selling. Very good. Very good. (hand tilting quickly) Oh, wicked. Wicked. You’re wicked. Eh? Know what I mean. Know what I mean? Nudge nudge. Know what I mean? Nudge nudge. Nudge nudge. (leaning over to him, making eye gesture; speaks slowly) Say…no…more. (leans back as if having imparted a great secret)
Man: (stops him with finger which he lays alongside nose; gives slight tap) Your wife is she, eh… is she a sport. Eh?
Squire: She likes sport, yes!
Man: I bet she does, I bet she does!
Squire: She is very fond of cricket, as a matter of fact.
Man: (leans across, looking away) Who isn’t, eh? Know what I mean. Likes games, likes games. Knew she would. Knew she would. Knew she would. Likes games, eh? She’s been around, eh? Been around?
Squire: She’s travelled. She’s from Purley.
Man: Oh…oh. Say no more, say no more. Say no more - Purley, say no more. Purley, eh? Know what I mean, know what I mean. Say no more.
Squire: (about to speak; can’t think of anything to say)
Man: (leers, grinning) Your wife interested in er… (waggles head, leans across) photographs, eh? Know what I mean? Photographs, ‘he asked him knowingly’.
Man: Yes. Nudge nudge. Snap snap. Grin grin, wink wink, say no more?
Squire: Holiday snaps?
Man: Could be, could be taken on holiday. Could be yes - swimming costumes. Know what I mean. Candid photography. Know what I mean, nudge nudge.
Squire: No, no we don’t have a camera.
Man: Oh. Still (makes that arm movement) Whoa! Eh? Wo-oah! Eh?
Squire: Look, are you insinuating something?
Man: Oh…no…no… Yes.
Man: Well. I mean. Er, I mean. You’re a man of the world, aren’t you…I mean, er, you’ve er… you’ve been there haven’t you…I mean you’ve been around…eh?
Squire: What do you mean?
Man: Well I mean like you’ve er…you’ve done it…I mean like, you know…you’ve…er…you’ve slept…with a lady.
@admiralpoopants A friend of mine told me that Monty Python wasn’t originally going to do that skit because it isn’t funny on paper. but when they saw how Eric Idle performed it, they put it on the show and it became a classic.
@eeterrific@hchavers@Trinityscrew Don’t knock spam until you tried it fried…still don’t like it. Man: “you sure you don’t like it?” Squire: “Its okay I guess” Man: “Did you spend 10 minutes reading the whole thing?” Squire: “Yes, and I feel I just got robbed.” Man: " Robbed how?" Squire: “I looked down and my pants were on backwards”
@Bandrik Correction - that alternative I listed gives 4 ports, but NOT all have Quick Charge 3.0 - the 2 ports on the socket are 2.1A each, and the part that goes in the rear seats with a clip has a 3.1A port and a single QC3 port. Still, pretty neat.
Bluetooth streaming music over the speakers (don’t for the subwoofer), blasting the AC in this 100+ degree days, and you want to plug in another 2 amp drain my electric car? Maybe I can mount a solar panel or windmill on my roof to get home at rush hour.
@Bandrik I will admit to clicking edit/sayIt about 30 times before getting this… There was one other that came up on the third try and I was trying to get again, but the instant I saw this one, I knew I would never find anything better.
Mine just arrived today but they came from checkout.org out of NJ, not Pitney Bownes and Texas. Looks like Meh is trying something a little different, maybe. I will say getting this was smoother than what has become normal these past few months.
Just the opposite for me! Firstly it was sent dhl which is always terrible and then it says it was passed to usps except usps say they are still waiting for it, that was over 10 days ago and in another state. The last four shipments I’ve placed have been horrible and meh support is either completely unresponsive or totally useless.