Emergency Phone Charger

JK Knives

JK Knives

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Anybody have one of these? One of my daughters got me this emergency cell phone charger. It takes 1 AA battery, and comes with 5 different adapters for different cell phone models. It seems to be pretty well made out of aluminum. Anybody have any expereience with one of these? It seems to be a neat idea.

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I just posted in the Christmas gifts thread about a crank radio I got as a gift from mom. It has a port and came with a cable for charging cell phones.

It says that 90 seconds of cranking will give one minute of talk time. I'm sure this would depend on how efficient the phone is and whether or not you are "in network".

I havent tested it but I plan to do a full refiew of the radio and its features soon.

Give that one a try and keep us posted on how well it works.
 
I have two older ones (need the new adapters) for matching cell phones my wife and I use to have. My wife is notorious for running her cell battery down (and running her vehicle close to empty:mad:). It was a great "back up" charge for emergencies. I used lithium AA batteries for longer storage life. I need to dig them back out and see if can get new adapters for our current phones.

It's a good emergency power source for you cell phone!

ROCK6
 
I have one. With alkaline batteries I found the battery must be very "fresh" to charge properly. The lithium batteries mentioned earlier sound like a good idea, both for shelf life and capacity.
 
i saw one in a hardware store add the other day. definatly a good idea. in an outdoor catolog that i get, they sell a wind-up radio, flashlight cell-phone charger.
 
Aeromedix sells a crank-powered general charger that is small and readily adaptable to most cell phones---I saw it in their product catalog that came along with my latest BM/Ritter collaboration. It looks like a neat piece too!
 
These seem like a good idea.

To tell the truth, many of the places I like to go have no cell reception. I love the feeling of being out of touch. Completely.

But when you want to make a call, you want to be able to make a call. :thumbup:
 
Rupestris said:
I just posted in the Christmas gifts thread about a crank radio I got as a gift from mom. It has a port and came with a cable for charging cell phones.

It says that 90 seconds of cranking will give one minute of talk time. I'm sure this would depend on how efficient the phone is and whether or not you are "in network".

I havent tested it but I plan to do a full refiew of the radio and its features soon.

Give that one a try and keep us posted on how well it works.
Click to expand...

I have one of the Eton emergency radios with a hand crank on it. Even without batteries, you can turn the crank and generate enough power to run the radio.

It has a setting for charging a cell phone as well, but none of the attachments fit my phone. I wonder if Eton has other attachments available.

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Most cell phones use a 3.7-4.2V lithium ion rechargeable battery... which means that all you need is a single spare charger, and a CR123-sized rechargeable LI battery, like these here:
https://www.4sevens.com/product_info.php?cPath=53&products_id=201

These can be used in many "tactical" lights, and you can get solar chargers that will charge these 3.7V batteries, as well as 1.2V NiMH batteries.

Just cut the plug off the charger, strip the wires, and tape to the proper terminals of the RCR123 battery. Boom - extra couple of hours of runtime.

Actually, this trick can be used with regular Surefire 3.0V primary lithium CR123 batteries as well - but only on some phones.

Another trick - wire 3 1.5V alkaline batteries in series, and you have a 4.5V source (will rapidly drop to 3.6-4.0V due to draw) that will also charge your 3.7V battery just fine. A D-cell alkaline has about 15'000mAh of power (at 1.5V), compared to an average cell phone battery's 1000mAh (at 3.7V)... so with a 3 D-cell setup you'll have about 15X the talk time... allowing your phone to standby for as long as a month...

P.S. Don't cross-wire the terminals please. Reverse-charging a LiIon battery will make it burst into flames.
 
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I gave one to my son for use at a multi-day rock concert he attended. Short answer, it didn't recharge a dead cellphone sufficently for use. I've since swithched to a 2AA lithium cell Energizer phone recharger, available at CVS, etc.
 
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