AA battery Hack

http://www.metacafe.com/watch/824477/6_volt_battery_hack_youll_be_amazed/

 

Some other amazing, but simple, hacks.

$10 Police Flashlight Hack!
http://www.metacafe.com/watch/581888/10_police_flashlight_hack/

Laptop Battery Hack! Don't Buy A New One!
http://www.metacafe.com/watch/479447/laptop_battery_hack_dont_buy_a_new_one/

I think I'll be trying all 3. :major :cool Bazza

 

I believe so, Dan said he saw it on TV. I thought it was bad to open them, guess I'm thinking car batteries.

 

it's not so good to open up the AA batteries either. But 6 volt batteries are a composite battery where it is made up of smaller, easier to produce batteries. Just be warned that some times they are made up of a couple of 3 volt batteries and those are pretty much worthless anymore.

 

Those are cool Bazza but gotta tell you when I heard the word explode, lost me. rolleyes

 

Thanks, don't think I'll be opening anything just thought it was interesting to find out it was made up of something so simple.

 

that is awesome! i wonder how the life of the little ones are

 

Probably not great, but at around USD $0.15 each, it's worth a try. Bazza

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So you don't think they're the same as regular AA's?

 

Its not such a great hack IMHO you can only do it with really cheap batteries,in the UK I can buy 20 cheap AA batteries for £1=$2 while the really cheap large 6v or 9v batteries are still £3-4.

As BM said alot of the time there are 3 large batteries and even if they are of AA battery size they arnt AA batteries they are AA sized 'cells',the only difference is the positive terminal doesnt protrude as high as on an AA battery which means it wont fit alot of devices.

 

Last time I did it it was 4 D cels (or was that C, I think D). I can buy a 25 pack of alkaline AA for $5, a 4 pack for $1.50, from the Dollar store. Their numbers are a bit high, the prices you pay at supermarket isles.

 

Don't forget, we're talking alkaline, which is the chemistry of the battery, and is definately not recharable. Rechargables will cost more, just makes sense, quality has to be a lot higher. Remember the burning Dell laptop?

I don't know what they would call them in Britain, but you have to have an equivelant to the Dollar store. It is true the alkilines might not be as good, but if you're in the ballpart they'll be good enough.

 

I don't, what was that about, make shift batteries? :confused

 

This thread encouraged me to dis-assemble my rechargeable torch (lantern actually).

I had dropped it and it ceased to work. I thought it was the globe (bulb to you lot ) but found it was a soldered wire with a broken connection.

Gonna get it fixed, and also look a installing 2 x AA type batteries (with tabs) and a more powerful globe.:major Bazza

 

Pound store

Kestrel thats not bad for rechargeable batteries,one of the best best deals I have seen are in the supermarket LIDL 4 2400mah NMHI AA for £2,they last 3 times as long as 800mah NICAD\alkali.

 

Quality control issues at Sony, who burned a lot of people that used them as a wholesaler. Actually the number of defective batteries was extremely low, but that wasn't much consilation if your appliance caught fire. As I understand it they had ground metal as part of the battery, in some batches it wasn't ground fine enough and caused internal shorts. Since modern lolypoly batteries hold really high amounts of energy and an internal short causes it to all discharge at once the result is fire.

Using the batteries with combat robotics we've seen them accidently punctured. Always makes for a good show and a sad robot builder.

 

Took my old Gateway laptop battery to a Battery reseller today. Got a very helpful guy behind the counter (thanks Col) to prise off the top.

Underneath we finally figured out 12 x 3.7 Lithium Ion Batteries in 3 groups of 4 to give 11.1 volts and 6400 mAH. Now all I've gotta do is find some reseller in Australia that stocks them.

Got a lead in Townsville (220 miles, 355 kilometres approx.) away. Will ring them tomorrow.

When the battery was designed (back in '99, or earlier) the 12 batteries were only around 540 mAH each. Nowadays I think they are a lot more powerful. Each battery is around 1.5 times longer than a standard AA battery (but with tabs), so it will prove interesting to track them down.
Lithium Ion being the problem, :cry , not the size.

I'd like to get the old Gateway laptop going again. I have ideas of using it as a jukebox, connected to my Hi-Fi stereo.

Bazza

 

It's an old laptop that I paid nearly AUD$6000 for in 1999, with all accessories. Top of the line then. XP Pro, P2/400, 256 megs of RAM IIRC.

Got a $6000 bonus from the company I worked for at that time and blew it all .

It will still run without a battery, on AC power, so I will check out battery cost versus proposed use and see if it is worth it. New Gateway battery is around AUD$300 due to 12 x 3.7 Lithion Ion's inside. Bazza

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