Energy density of a low-end battery: 360 kJ/kg
Mass of a battery 100g => 36kJ in that battery
Charging time: 60s => 600W go through the wireless interface?
At the CES gadget show, the news wizards of the BBC managed somehow to obtain "an exclusive look"* at a miraculous new technology which promises to allow an ordinary Samsung smartphone to be fully charged up** in "less time than it takes to boil a kettle". "I've just been witness to what feels like a modern-day technological …
You raise an interesting point though have missed a couple of details. The BBC exclusive tech is not wireless, though the El-Reg battery swap method is. Also the energy density of the new battery tech is less than standard batteries, the demo device is only 900mAh and charges at 40 amps via some hefty contacts on the back of the phone. Larger capacity batteries will take longer to charge Asuming a standard 4.2V battery voltage power is 180W, wireless tech could never hope to deliver this amount of power, which is what rang alarm bells for me.
As an ex-Auntie staffer I'm more than happy to stick the boot in, but the actual article seems fair if a bit dumbed down as is normal for mass media.
"The BBC is the first to have been shown the new kit, apart from tech industry executives who had to sign non-disclosure agreements.
It's not something that can be retrofitted to existing devices, since most phones would be fried by the 40 amps of electricity the current version of the charger supplies.
It also involves using a completely new type of battery, which contains specially synthesised organic molecules.
"We have reactions in the battery that are non-traditional reactions that allow us to charge very fast, moving ions from an anode to a cathode at a speed that was not possible before we had these materials," explains Doron Myersdorf, the company's chief executive."
Why not get an interview with the developer and give us a proper look at this battery technology?
Perhaps the developer doesn't want to give interviews to other publications? Whether the technology in question has merit or not, control over the release of information is critical in properly exploiting it.
I want to know if I'll really be able to charge my phone in less time than it takes to brush my teeth.
If The Register had asked for more information and been refused then there would have been a story. If they'd got an interview and a look at the tech, then, again, there would have been a story.
As it stands this is either a silly waste of time (by at least one party) or just a bad joke (by at least one party.)
"A lot of the early Christmas-toy helicopters used capacitors instead of batteries. "
Anyone remember Corgi Electro Rockets or Hot Wheels Sizzlers? Fast charge electric cars for use on your Corgi or Hot Wheels tracks. That would have been in the 70's when they charged in 60 seconds from a battery operated charging station. I suspect they used capacitors rather than actual NiCd.
Early lithium batteries could be discharged pretty quickly too. I remember being told of how, in a company that was working on them, a draughtsman walked into an engineering office, and then brought out a caliper to measure the length of a C cell. Someone shouted to him to stop, and all the engineers dived under tables.
I've been doing this for about 3 years - I got a Sammy S2, that came with a battery and I got a 2nd battery, that is easily recharged via a Yiboyuan wall-wart that has a cut-out on the front side for the battery to physically connect to (and it has a USB outlet on the top too). So, a battery in the phone and the 2nd one in my pocket, if the 1st gets low....saved me lots of pain when I've had to use wifi and/or bluetooth and drained the battery and couldn't find a charging point ;)
And you can charge two devices at the same time from one block. A couple of these kept me from having to pay high prices to recharge from the mains for several weeks when I was very away - savings paid for the blocks almost.
Still have them and they make long days away or outside much less stressful especially if navigation is required, and it usually is.
Also useful if one of you shares their internet with the other because one of you is lacking a decent connection - a real battery sucker that, almost as bad as WhatsApp.
Wireless charging, here. Qi wireless charging pads are about £6 each, so I have one in any location I'm likely to be spending any significant time, including the guts of one stuck to the underside of the mobile phone tray in my car.
So, whenever I put my phone down for any length of time, it's charging. I can't remember the last time that battery life was an issue for me.
"These days, I use external USB battery packs. They're not constrained by the size of the phone (meaning you now have bricks in the neighborhood of 20Ah) and, best of all, don't require the phone to be turned off to use."
I do the same and given that I have lots of sun out here I also use solar panels to charge various battery doo dahs.
Although there is a an enormous selection of "extra" external battery type devices (Mine is 22Wh) , you can buy actually AA-2-$Phone adapters. I have never seen them in the UK, but they sell them in Walgreens/CVS.
VERY useful for festivals where finding a wall plug is, well, not the point...;-)
The really odd thing about that article is the comments section. who'd have thought phone batteries could be so contraversial.
I suspect it was the Beeb comnentards attempting to comment on more newsworthy items. The BBC does tend to restrict commenting to only the more banal articles.
This is probably the only device I've seen that could inspire a rush of bored housewives to start tinkering with electronics at hacker spaces. Their the only demographic that can flatten batteries as fast as blackberry users.
On a side note, i find it odd that i haven't seen any write ups on this snazzy bit of IOT tech: https://www.youtube.com/watch?v=DJklHwoYgBQ
If suspect a few Reg-critical commentariat contributions as to the general tone of the Reg-issued article felt as being needlessly dismissive of the BBC contribution to general consumer device knowledge fell under the wrath of a passing moderator?
I am not sure how to feel about this?
"The company also showed off a 2,000mAh battery, which took three minutes to recharge, but the phone that housed it had been made 5mm (0.2in) thicker than normal to accommodate its girth."
Well it is sounding much like much of that old tech revamped.
I bet another 5mm would get you a 7500mah Zerolemon anyway.
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