Hi All,
I was just reading on Wiki about alkaline battery's and it said you can charge them so I did. It works great STOP THROWING OUT DISPOSABLE BATTERY'S.
http://en.wikipedia.org/wiki/Alkaline_battery
You are right my friend! What voltage did you charge em with?
I just used a charger that is made for rechargeable battery's
Thanks Vince
do we know how many charges they can take before they give up totaly?.
Please give attention to load not over 1,8 volts. !!
Voltage above 2 volts will disturb , leack or explode the cell.
Via 3x 1n4001 in serie, (added in conventional charger)
you can hold the maximum loadvoltage low.
(any recharcheable batterie us to LOAD , 20% OVER the nominal battery voltage
Devices must not "unload" lower than 25% of capacity. So the batteries can load up to 25 times.
Gustav Pese
it only takes 2 seconds to charge a battery on a car charger... yes im serious ive been doing that for years alkaline or nickel cadium it deosnt matter . 12v 6 amps haha 2-3 seconds
on a car battery charger??? WTF I suppose you take some type of precautions done inside a plexiglass container with gloves to prevent leakage or explosion????
Hrmmm crazy I almost wanna try it lol...
USE EXTREME CAUTION WHEN TRYING SOMETHING LIKE THIS IF YOU CANNOT PROTECT YOURSELF DO NOT TRY IT!!!
Jes , i know. that seriosly, you can do it.
But you can not overvieuw the time of chrge.
time mulitlied with charge (amps) = ma/h
to overload the cell.
slowly load,, its better to control and overview it
Pese
this is absolutly hilarious watch right to the end!
http://www.youtube.com/watch?v=rcC8BuFj21Q
what about sealing pos end with resin that would make it equal
to the proper rechargable batt
pos end is where its the weakest
As a kid I used to strap a single 1.5v cell across the terminals of a 12v car battery and walk away while it fizzed and eventually went bang and blew it's self to pieces. I would say 12V car battery with a lot of current could detonate a cell in about 5 seconds.
Charging a 1.5V cell at 12V is just asking for trouble and 12V at 6Amps for 3 seconds is unlikely to put much into the battery in terms of amp hours.
I think it works out at about 40mA/Hr:
12V * 6A * 3 / 3600 = 0.06 Watt hours or 60mW for one hour.
0.06 / 1.5V =Ã, 0.04 A/hr or 40mA/Hr
Far better off with a Ni-MH battery, currently are up to 3000mAHr on an AA cell, some devices like LCD clocks/weather stations do not like the lower voltage of 1.2V and show very dim segments on the LCD and state the battery is exhausted.Ã, Vapextech and Golden Peak (GP) are both good.
(edit I watched the vid posted above, so instead of performing the experiment in his bedroom he decides to do it in the kitchen where you would normally prepare food, obviously a contender for the Darwin awards and like the film "The Blair Witch Project", the end could not come soon enough... ;) )
Regards
Rob
NOPE I JUST HOLD THE ALIGATOR CLIPS ON THE RIGHT SIDES TILL THE BATTERY GETS WARM AND SHE DONE!!! any battery ive even done this to the small circle ones!!!!
Quote from: jikwan on April 08, 2008, 06:24:00 PM
this is absolutly hilarious watch right to the end!
http://www.youtube.com/watch?v=rcC8BuFj21Q
I was LMAO at the heavy breathing, the saucepan lid, and the wooden spoon action. Could you imagine this guy testing one of the GK model TPU's? He would be in a basement, half a block away, with his wooden spoon. :D
"That's amazing! They've been lying to us!" That's the good stuff. Thank you.
:D Hahahaa funny video! ;D
... but the dude does have a point, even though he makes a total fool of himself
with his heavy breathing, his overexcitement, and especially his soup spoon :D
the battery industry has been shouting not to even attempt to recharge batteries
because of explosion and toxicity hazard, and have been tricking us into
believing we need to buy new ones every time the old ones go flat...
Oh, and for those who have never taken an alkaline battery apart to look at its innards,
it may be nice to know there's not really that much really toxic stuff in there at all...
Most alkaline batteries are simple zinc cylinders filled with carbon, often wrapped
in a thin fibrous material that was soaked in water or very weak acid.
Only when all the vapour (water) has gone from the cell or the zinc is so far oxidised
that it no longer makes a conductive contact layer, does a battery lose all its galvanic
action and the ability to be recharged.
They can explode in some cases, but a simple strong cover over the battery charger
should be able to contain all of the possible blast when a battery overloads and ruptures,
so they could simply have marketed blast-proof battery chargers.
But they make much more money selling us whole batteries, so they never did and
probably never will make those. ;)
Hi. After lurking for almost a year, I have decided to get in on the act. :)
Just a comment that I tried the alkaline battery recharging experiment, with mixed results. As recommended on the Youtube video (not the 'ultra-cautious' guy video:)), I 'played-safe' and with my charger plugged into one of those cheap timers, charged 4 Duracell AA batteries, 1 hour on-charge, 1 hour off-charge (to prevent them leaking) over a 24 hour period. Everything seemed fine and I thought it had been a complete success, until I realised that all 4 batteries had leaked! They all had aquired quite a bit of charge though, one running my mp3 player for several hours, though a fraction of what a new one would manage. I tried charging a different 4 batteries, same 1hr on\1hr off, and this time 3 of the 4 leaked. Interestingly, the one that didn't leak aquired much more charge - it is still running the mp3 player and showing 'all battery bars' after 8 hours! Anyway, my conclusion: it definitely works as long as the batteries don't leak, so 12 hours (spaced) is probably too long a charge period.
@Sprocket,
Maybe you could charge them at a lower voltage or current using two pieces of foil, piece of card, crock clips and a resistor or variable resistor of say 1K. Make a sandwich of foil - card - foil and place this between the +ve terminal and the charger connection. Then use crock clips/paper clips to bridge a resistor across the foil pieces.
The batteries are not designed to vent gas so I guess its the gas from fast charging that is forcing a leak of potassium hydroxide gell to occur.
I was wondering if slower charging will create less leaked cells.
Regards
Rob
cool
anybody know of any simple circuit, with a relay maybe, that will check the voltage of the recharging batteries say every minute, and when it gets to a specific voltage, 1,6 V or so, the circuit will turn off the charger? I'd like to hook one of these up to my bedini charger :)
Yeah, that's a nice idea...
If you manage to recharge simple "non-rechargable" AA or 9V batteries
using a Bedini charger, that would be cool :)
Would a relatively simple setup of a voltage sensor and a switch (transistor) work?
On a different note, did you guys know that the 9V "block" batteries are
actually 6 small cylindrical cells wired in series? Or at least, the alkaline
"non rechargable" ones are. I have opened up several different brands and
they were all the same: 6 thin zinc cylinders with a carbon filling and a
goopy sludge in between, the electrode on the carbon a simple metal
nail of about 3 to 4 mm long, isolated from the zinc by a thin layer of plastic.
It's similar to some large 12V battery blocks, as some brands appear to
fill those with a number of standard AA sized batteries in series...
Back in school they taught me that block batteries are the only ones
that actually contain a row of dissimilar metal plates in an electrolyte solution,
which was the reason why they put out a higher voltage. Although wiring
6 or more cylindrical batteries in series does effectively give a similar setup,
I do feel a little bit cheated by the battery manufacturers... ;)
Quote from: MeggerMan on April 10, 2008, 08:11:43 AM
@Sprocket,
Maybe you could charge them at a lower voltage or current using two pieces of foil, piece of card, crock clips and a resistor or variable resistor of say 1K. Make a sandwich of foil - card - foil and place this between the +ve terminal and the charger connection. Then use crock clips/paper clips to bridge a resistor across the foil pieces.
The batteries are not designed to vent gas so I guess its the gas from fast charging that is forcing a leak of potassium hydroxide gell to occur.
I was wondering if slower charging will create less leaked cells.
Regards
Rob
I actually have a bench power supply that allow accurate setting of both voltage and current, so using that would be easier. Thing is, I have only 1 non-leaky alkaline battery left, so I will have to try and hunt down some more before I can continue experimenting :)
you can buy a 'proper' charger for alkaline batteries, the one below is about ?25 (one of the
more expensive ones) but they can be quite cheap. they've been out for a few years.
heres a snippet from the website :-
The EverCharge Multi-Function Multi-Chemistry Universal Battery Charger represents the latest innovation in battery charging technology. Not only does the EverCharge perform quick charging capabilities to Ni-Cad, Ni-MH, and RAM batteries, but it also can safely recharge previously non-rechargeable Alkaline batteries.
The ability to recharge Alkaline batteries will not only save you money, but it can go a long way to helping the environment at the same time. With over an estimated 30,000 tonnes of used batteries, classified as hazardous waste, being deposited into our landfill sites every year in the UK alone, the EverCharge is an important Eco-Friendly product.
Recharging of Alkaline batteries is dependent on the quality of the battery but tests show that the alkaline batteries can be recharged up to 85%-90% of their original capacity up to 15 recharges and costs literally pennies to recharge. This makes the cost of your standard batteries almost a steal.
i have selled and used years ago the ray-o vac
batteries and the orinally charger (because "other" chargers can let explode or "leak" the batteries.
i used this to have 1,5 volts instead 1,2 volts (cad).
.
After this i have used low cost cahrgers (5-10 $) with cahnge in the circuit, this way that battiey can not charge higher than 1,9 volts.
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take some knowleges also here .
(clic to "CACHE" )
http://www.google.de/search?hl=de&q=ray+o+vac+alkaline+charger&meta=
Pese