Submitted by: kleptophobiac via Submit a Kludge!
Favorite Comment: Fixer husabob says, “Alternate definition of “terrorist cell”
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Hello? Andromeda galaxy? Anyone out there?
It’s a reserve battery ment to recharge your phone
Try to get *that* through airport security!
Imagine if you can get it through TSA screening and forget to turn it off, it rings in the plane, and you take it off your pocket!
If you even get *that* far.
The cab driver will jump out at 50mph when your mom calls, wishing you a safe trip.
If you took this thing into an airport, you would be tackled by TSA when they mistake it for an IED
Than the damn taxi cab ends up on ‘that will buff out’.
you mean the cab driver mugs you for the phone thinking its an IED and tries to plant it somewhere, a week later Dept. of Homeland Security busts down your door after finding it and tracking it down.
If they’ll catch you with this at the airport you’ll most likely be shot.
lol haven’t read the post before
And unbenounced to him, he soldered a shotgun shell to his phone.
That’s a shotgun shell? I thought maybe it was a capacitor.
It’s a safety device: it explodes in thief’s hand.
Need a one-way, all-expenses-paid trip to Gitmo? There’s a hack for that.
Amazing! Megalol! But how can I charge THIS?
theoretically it should last longer than the factory battery that comes with it so long as its Li-Ion it’ll be fine
If it uses an external charger, then it will work with any technology battery that outputs a suitable voltage.
If both electrical contacts are exposed, you don’t want to put that in a pocket with a lot of keys and change. I had a AA NiMh battery get painfully hot. I’d hate to see what happen with a larger lithium battery.
There’s a reason they usually have safety circuits. Put that in your pocket and the contacts touch for long enough, well, you could end up with 3rd degree burns, for starters. There’s a possibility of it exploding, though that normally only happens with overcharging.
normal li-ion like this are usually about 1000-2500mAh, the mobile ones are like 700-1400mAh, so normal ones can be worse too
Compact IED (Improvised Emasculation Device) when it blows up in your pants!
Someone seriously needs to start a “Get that through airport security!” blog.
That could be entertaining. It’s amazing that half the stuff on this site makes it past building inspection.
Wow, I thought I’d done well duct taping a load of AAs into the back of my old brickphone, but this wins. *hands over belt*
It looks like an Electrolytic capacitor. If that shorts on your keys it’ll discharge all its stored energy in one shot. It looks pretty meaty too…
It’s a Li-Ion battery. If you think shorting an electrolytic cap is bad: this one easily packs thousands of times more energy than a cap this size.
its designed for maxium pleasure in vibrate mode
@towny – heavy duty industrial vibrator!
Well, it’s such a nice phone, I can see why they wouldn’t want to part with it.
I am picturing the roadrunner seeing that thing ring and running away. Beep Beep!
…so then, it’s Coyote’s phone…!
this new phone it da bomb.
da bomb? it is a bomb!
Let’s hope this doesn’t start a trend.
For the love of God, man, don’t send a text! Don’t!
he had to rig it up this way because he decided to have Inna Gadda Da Vida as a ring tone, and the 29 minute version of it was tough on the factory battery.
Wait a minute – this sounds like rock and/or roll.
Alright Lovejoy, you need to go to rock and/or roll camp.
Speed 3 didn’t pan out as well as the producers hoped.
“This phone has been rigged with a bomb! If you text below 150 characters per minute it’ll explode!”
Think all batteries are the same? Consider this.
alternate definition of “terrorist cell”
I’ve always wanted my cell’s battery life to last longer, but I never realized that it would look like a bomb when actually implemented
that battery acid? ooooohhh yeah…
Thank you for the upgrade, your phone now has 650525251025923 more internets!
I have this phone. (Well, not THIS one, but this model.) It’s an LG VI-125, and I’ve had it for, I think, 5 or 6 years? No camera, no fancy touchscreen. It’s a straightforward flip phone with external display that makes and receives calls and text messages. It’s EXACTLY what I want. I guess you can browse the Internet on it, maybe?
So of course I sympathize with the Kludger here. My battery stopped holding a charge last year and I paid $36 for a new battery rather than tie myself into a multi-year contract to get a fancy new phone with more features than I want or need.
There’s always pre-paid if you don’t want a contract. I’ve been doing that for years and it works fine for what little use I make of a cell phone (it’s basically for urgent stuff).
Or you could just buy a new phone. If the phone company doesn’t discount it, there’s no additional contracts. I’ve been contract free for 8 years now. I’ll give up cell phones before I agree to another one.
Looks like Doc got the mobile flux capacitor to work, just find yourself a lightning storm and text *88.
^Win
This phone has actually gone through airport security several times. They’re remarkably lax if your item doesn’t match anything on their list.
Yes, it’s a commercial lithium ion battery (LG 18650 2400 mAh) just soldered into the contact points for the original battery.
It goes about three weeks on standby and must be charged with a bench top power supply. The phone charging circuitry refuses to charge it without a temperature sensor on the center pin.
@ReverendTed: Yes, it’s a plain vanilla LG VI-125. It’s a great phone. It doesn’t do anything fancy, but makes fantastic voice calls.
I assume there’s some reason (having to do with electrical circuit maths that I am horribly bad at remembering) that you didn’t just put both (old and new) batteries in parallel so you could have a functional temperature sensor in order to get the standard charger to work?
No particular reason, actually. It would have worked out pretty well. The biggest reason was that it would be hard to get the wires to the terminals with the original battery in the way. It could totally be done, but we were lazy. The original battery also didn’t hold much charge at all and so we didn’t think it was worth having it in there. I think there’s just a 10k NTC thermistor to ground in the battery, so we could easily “fake” it, but why bother? Our house is full of electrical test equipment and supplies, so using a bench power supply to charge it is “no big deal”.
You get a FAIL until I see another photo with the thermistor on the side of the battery with a blob of hot-melt glue, and it’ll charge with the factory charger – in three or four days…
My Technics P5 first-gen CD player looks JUST like that, except that it’s two 6V 1.2AH gel-cells stuck on the bottom of the original rechargeable battery pack case (that had custom ~500mah cells).
When the replacement parts get too expensive, some people junk it – but the kludgers get creative…
Meh. The thermistor really isn’t necessary, and neither is being able to charge with the factory charger. I might do that for my dad when I get back from europe, but I might not either. The factory charger should charge the phone in about 3 hours. It’s rated for 1 amp and the cell is 2.4 amp hours. The original battery is 1 amp hour and takes about 70-80 minutes to charge completely.
you could pen the battery, solder the wires and make two batteries in parallel, i usually use old batteries, you just open it up and remove electronics
Lol! 3 week on standby!
get a dozen more batteryand you only need to charge once a year.
There appears to be NO protection circuitry whatsoever. That’s OK for lead-acid, not so much for nickel metal hydride and nickel cadmium, and it is VERBOTEN for the lithium-ion chemistry. One of these cells has about the same amount of energy a stick of TNT has. If it blows up, I can guarantee that there will be hell to pay.
With lithium ion cells you absolutely have to monitor for over/under voltage. You really ought to measure current. It’s usually also a good idea to measure for temperature, but by the time that becomes a problem there’s usually nothing you can do but shut down and hope for the best. This cell phone has voltage monitoring in the phone, not the battery. I have no idea if it senses current anywhere, and I ignored the temperature sensor. Given that I’m charging with a laboratory grade, current limited power supply, there’s really not much the phone has to do to protect itself besides shut down when the cell gets low. I also happen to build battery packs for the Stanford solar car team. Take a look (this one has a complete management system, including charge balancing): http://i43.photobucket.com/albums/e360/kleptophobiac/Solarcar/Apogee/batterybox-scaled.jpg
“Cell” phone…
ur doing it wrong.
Unpro – my nokia 6310i got 4 weeks on standby when it was new – now its 8 years old that’s dropped to about a week.
I have some cheap Nokia phone I picked up from a friend who went to Thailand. It goes about 2-3 weeks on standby with the built in battery. It’s great. It’s also a GSM phone. The difference here is that with CDMA the phone changes its output power so that the perceived receive power at the station is the same for all phones. My dad’s house is a 1-2 bar place, so the cell phone has to crank up the output power in order to make it happen. I had the same phone for my first year in college. My dorm room had 5 bars, and instead of going 1 week on standby my phone went 2. There’s a lot of factors at play that you have to consider. Not the least of which is that it’s hard to measure standby time when it stretches into weeks – you *do* use your phone a bit, after all.
@kleptophobiac:
Strange, aren’t you using a safety circuit with the 18650, and then soldering in the phone circuit? I always yank one from a dead cell, Li-ion cells hate overcharge.
But it’s very freaking ghetto, I praise your work as a fellow Gyro Gearloose myself.
This phone has voltage based sensing built in to the phone rather than on to the battery. My Motorola Q is the other way around (terrible phone, by the way…). Yep, lithium cobalt oxide cells do hate overcharge. If you want to demonstrate to yourself how much they hate it… try this: Take a cell and sit it outside somewhere safe. Run some wires to it and charge it up to 4.5 volts (4-wire mode on your bench supply is really handy for this). Wear safety equipment and crush it by dropping a lead brick on it. There are some fun videos of what happens if you don’t feel like doing it yourself.
DUDE! If that actually works, thats amazing! You could make calls to Mars with that!
Heh heh heh, now I just need to place this near that Verizon guy, wait for the right moment, and detonate it. Can you hear me now, punk?
Need a long-lasting battery for your cellphone? There’s an App for that too!
Remember how the wall sockets are sometimes different in countries you go to on holiday? Not for this guy, no recharging required for at least 3 weeks. For only 80$ you can also upgrade to a car battery instead.
imah firin ma PORTABLE lazer!
…and now, you want to replace the tiny antenna probe with WHAT???
I can’t beleive that thing made it through airport security…more than once?!!! And they examine our shoes, but a little stick of dynamite hooked to electronics…what the hell…all planes come down eventually…
Yeah, just place it in the tray and let it go right through the xray machine. No questions asked. My dad took it back and forth from my shop in California back to his home in Kentucky without incident.
Once I took a dozen loose 18650 cells in a ziplock bag through airport security in my carry-on. I had insulated each one of them to ensure nothing bad happened in the bag. Security didn’t say a word about the batteries, but they gave me grief for my 4 oz dentist’s office sized tube of tooth paste.
*takes the toothpaste* That could be plastic explosive! *opens and squeezes the tube a bit, sniffs it, then rubs it on his teeth* Ah…mint flavored plastic explosive. Strip search him!
OMG, I actually still use this model phone today…nice to know I have a backup plan when the battery finally dies for good!
Where’s the Kaboom? There was supposed to be an Earth-shattering Kaboom!
Let me BEGIN by saying this can be used for legitimate purposes, and not for terrorism. That should clear this up a little.
A cell phone contains all of the parts necessary for remote activation, with the added bonus of almost infinite range. Essentially, if you have service, it’ll work. If you remove the vibration mechanism, you can connect wires to the leads that powered it, which will provide clean DC electricity on demand. It’s low-voltage, but sufficient as a trigger.
There’s a video – or several – on Youtube that describe the process of converting a cell phone into a fireworks trigger. I recommend using long leads in case your explosive is particularly strong (maybe with a relay device if you lose too much to resistance. I don’t know what voltage the cell delivers to the vibrator.)
“what do you mean I can’t take my phone on the plane?”
I did the same thing a year ago, and I have taken it through airport security.
they didn’t even question it, just assumed that along with a few other AA cells and a camera, that it was “safe”.
One could pack 30 grams of _whatever_ into an 18650 cell and its going to be quite spectacular. Not to mention the NMRI machines can’t “see” it because it in a Faraday cage, and the container is a magnetic material.
OH, BTW, those NMRI machines can be jammed with a few milliwatts of power. think about it, you have to magnetically pulse the EM field and listen for the ringing, it is quite faint. Might be an interesting college project to build a device that will set off the machine.
even funnier, is that when i clicked on this pic, the whole page is covered in ads for the mophie juice pack, a external battery for iphone xD
I had a nine-volt battery in my pocket (long story). A Canadian quarter bridged the contacts and the thing assploded in my pocket with all members of my family in attendance.
Bang … BANG … jump up and holler while running for the bathroom. Not exactly distinguished.
Thanks to all for the many hilarious comments. This old phone finally failed and has been traded in for a new one now. It lives on, in a way. It has been hung up on the wall of my local Sprint shop, in the service area, where a curious glance is sometimes cast its way.
This is Lithium rechargeable battery, type: 18650 – 18mm in diameter, 6.5cm long.
Common capacity in most notebooks ranges from 2.2Ah to 2.4Ah. Special Panasonic models have 2.9Ah. Gives you very long standby and call time, recommended addition to any mobile phone. Especially if you like to recharge your phone once in a week or two or a month…
You ask me how do I know… well, I had this idea first in 2003 I think…
and then the brain cancer set in. FAIL!
Mine just sends me a text if I go over my minutes.
CAN YOU HEAR ME NOOOOOWWW????
Don`t laugh the cell phone ,and other electronic companys have tooooooo small of batterys in them to begin with.
If I was a car dealer,and a electronics engeneer was to buy a car from me I`d install 2 gallon gas tank in the car!!!!
it would seem that everything is trying to kill you.
its a BOMB!