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Alkaline Batt charging? — Parallax Forums

Alkaline Batt charging?

ArchiverArchiver Posts: 46,084
edited 2001-02-02 16:12 in General Discussion
I was wondering if anybody knew of a way to recharge regular Alkaline
batteries. I know that there once was that Buddy L Alkaline/Ni CAD
Battery Charger (Super Charger) but I don't think they make it
anymore and I was wondering if there was a way to build a charger
that can recharge AA, AAA, C, D,... batts for my Stamp projects which
can suck power. Also would be nice for my new digital camera which
really goes through batteries fast as well. heh. Thanks.

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2000-12-13 17:06
    I recommend the Rayovac Rechargable Alkalines: I have used them for over 2
    years now, and still am charging some of the original batteries. They dont
    cost a lot more intiially for the battery either. They claim 20 charges, but
    I have gotten 50-100 charges out of my batteries in AAA and AA sizes that I use.
    I did use them in my digital camera and did not have much luck. It seemed
    like they could not put out a high enough amperage to charge my flash unit,
    however my camera is flaky charging the flash anyhow.
    Good luck


    At 07:09 PM 12/12/2000 -0000, you wrote:
    >I was wondering if anybody knew of a way to recharge regular Alkaline
    >batteries. I know that there once was that Buddy L Alkaline/Ni CAD
    >Battery Charger (Super Charger) but I don't think they make it
    >anymore and I was wondering if there was a way to build a charger
    >that can recharge AA, AAA, C, D,... batts for my Stamp projects which
    >can suck power. Also would be nice for my new digital camera which
    >really goes through batteries fast as well. heh. Thanks.
    >
    >
    >
    >
    >
    Sincerely
    Kerry
    Admin@M...
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    much do you REALLY need?
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-13 18:00
    At 07:09 PM 12/12/2000 -0000, you wrote:
    >I was wondering if anybody knew of a way to recharge regular Alkaline
    >batteries. I know that there once was that Buddy L Alkaline/Ni CAD
    >Battery Charger (Super Charger) but I don't think they make it
    >anymore and I was wondering if there was a way to build a charger
    >that can recharge AA, AAA, C, D,... batts for my Stamp projects which
    >can suck power. Also would be nice for my new digital camera which
    >really goes through batteries fast as well. heh. Thanks.

    Hi,

    I would recomend using the Sanyo AAA and AA NiMH. They are about $5 a
    pair. You can get a charger that will charge them in 5 hours for $20.
    Make sure the charger specifies it can charge NiMH.

    I use the AAA for the motor power in a Radio Control car. I get 1.5 to
    2 times the run time with the NiMH as I do with an alkaline. Also the
    The NiMH can supply more power without dropping voltage. Even more than
    a NiCad. When I use alkalines, the car is fast at first and gradually
    slows as time goes on. With the NiMH, the car is fast almost the whole
    time. Even after 90% of run time the car feels just as fast as the
    beginning. Near the end you can detect some slowing then it just
    dumps. Also note that Alkalines are 1.5V but NiMH are 1.25V. But under
    higher power use, as in the RC car motor, the NiMH actually makes the
    car run faster. The reason is that the alkalines drop their voltage
    more under load where the NiMH hold it's voltage more constant. And it
    holds it for almost the entire discharge duration. Also,
    charge/discharge 'memory effects' are not a problem as in NiCads.

    When it comes to getting the most out of rechargable batteries, you will
    find the RC car racers to know the latest and greatest battery
    technology. There are a lot of RC companies investing money trying to
    find a racing advantage and batteries is one of the most important
    aspects of RC car racing. There are significant differences even
    between brands. Take a tip from the RCers and use what they use.

    Hope this helps,

    Bob

    --
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    | Robert Dexter, Manager | Diagnostic Tools and System Test |
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  • ArchiverArchiver Posts: 46,084
    edited 2000-12-13 19:58
    I agree. Sanyo has always been a big name in rechargable batteries
    (panasonic makes good batteries too). I use NiMH in my digital camera and
    get around 2 times the life out of them than Duracell/Energizer alkalines.

    --Dan

    > I would recomend using the Sanyo AAA and AA NiMH. They are about $5 a
    > pair. You can get a charger that will charge them in 5 hours for $20.
    > Make sure the charger specifies it can charge NiMH.
    >
    > I use the AAA for the motor power in a Radio Control car. I get 1.5 to
    > 2 times the run time with the NiMH as I do with an alkaline. Also the
    > The NiMH can supply more power without dropping voltage. Even more than
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-13 20:15
    Thanks for the suggestions. I'll probably go with the Sanyo's or Rayovac
    Rechargable Alkalines but does anybody know what it takes to recharge
    regular alkalines? is there a difference between a regular one and a
    Rayovac one?

    Original Message
    From: "Dan Gustafson" <dankgus@e...>
    To: <basicstamps@egroups.com>
    Sent: Wednesday, December 13, 2000 11:58 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    > I agree. Sanyo has always been a big name in rechargable batteries
    > (panasonic makes good batteries too). I use NiMH in my digital camera and
    > get around 2 times the life out of them than Duracell/Energizer alkalines.
    >
    > --Dan
    >
    > > I would recomend using the Sanyo AAA and AA NiMH. They are about $5 a
    > > pair. You can get a charger that will charge them in 5 hours for $20.
    > > Make sure the charger specifies it can charge NiMH.
    > >
    > > I use the AAA for the motor power in a Radio Control car. I get 1.5 to
    > > 2 times the run time with the NiMH as I do with an alkaline. Also the
    > > The NiMH can supply more power without dropping voltage. Even more than
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-14 10:10
    The "rechargeable alcaline battery" is technically and economically a bad
    concept.
    1) Voltage: the claimed 1.5V occurs only with a new battery or after the first
    few recharges.
    2) Current: the internal resistance of the battery excludes high current.
    3) Capacity: the capacity is lower than other types of batteries and goes still
    lower
    after a few recharges.
    4) Lifetime: a lot shorter than NiCads and NiMhs.

    The good choice is NiMh.
    Li-Ion is the best if you can afford it and get a good loader.

    Regards
    ECO

    Original Message
    From: "Gliebe-Tronics" <gliebetronics@h...>
    To: <basicstamps@egroups.com>
    Sent: mercredi 13 d
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-14 17:00
    The NiMH are certainly best for your situation. I tried recharging regular
    alkaline in my Rayovac alkaline recharger and had indifferant success. Maybe
    50% of the normal alkaline batteries took a charge. A couple overcharged or
    leaked causing corrosion to my charger [noparse]:([/noparse] Rayvac claims there rechargable
    alkalines have 20 times as much goop inside permitting more recharges. I
    read that someplace.
    I know the old original cheap chargers sold were simply a lightbulb to limit
    voltage and a diode in the circuit to make DC. I do not know the MA they put
    out.
    My radio shlock Nicad cheapo charger is designed the same way, a diode and a
    lightbulb.
    The best is of course a quality RC style charger for NiCad or NiMH, that
    measures peak voltage.
    I use NiCads peak charged for my RC helicopter.
    Despite claims to the contrary NiMH can be overcharged and burned out. My
    Panasonic laptop had an internal NiMH. Leaving the laptop plugged in for
    months at a time, the system overcharged the battery and ruined it [noparse]:([/noparse] I
    guess they cant take a constant trickle charge despite MFG claims to the
    contrary. This happend on two differant laptops. I would advise never
    leaving NiMH or certainly not NiCad on continuous trickle chargers.
    Good luck.


    Sincerely
    Kerry
    Admin@M...
    WWW server hosting
    [url=Http://mntnweb.com]Http://mntnweb.com[/url]
    Binghamton online Webcam [url=Http://MntnWeb.Com/bing.htm]Http://MntnWeb.Com/bing.htm[/url]
    CHRISTMAS Web Page [url=Http://mntnweb.com/xmas.htm]Http://mntnweb.com/xmas.htm[/url]
    --So you think you need more memory... the LEM went to the moon on 16K,how
    much do you REALLY need?
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-14 17:07
    Hello,

    Rechargeable batteries are vented to allow gasses which build up during the
    charging process, to escape into the atmosphere. Regular Alkaline batteries
    are not vented in this way, and recharging them could produce a small
    explosion, which would at the very least, ruin the battery. I would stick
    to the rechargeable types.

    Jon Enoch
    PCB designer,
    Northern Airborne Technology
    Kelowna,BC
    Canada


    Original Message
    From: Gliebe-Tronics [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=XionZEG99Y03n7HMVNGPOB1XQL9mHcNhoTdRPqLaTH_5scx4PVMk4EHzGcI7NoAWndutkJAa_OPDAbqkGPoCRF6j]gliebetronics@h...[/url
    Sent: Wednesday, December 13, 2000 12:15 PM
    To: basicstamps@egroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    Thanks for the suggestions. I'll probably go with the Sanyo's or Rayovac
    Rechargable Alkalines but does anybody know what it takes to recharge
    regular alkalines? is there a difference between a regular one and a
    Rayovac one?

    Original Message
    From: "Dan Gustafson" <dankgus@e...>
    To: <basicstamps@egroups.com>
    Sent: Wednesday, December 13, 2000 11:58 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    > I agree. Sanyo has always been a big name in rechargable batteries
    > (panasonic makes good batteries too). I use NiMH in my digital camera and
    > get around 2 times the life out of them than Duracell/Energizer alkalines.
    >
    > --Dan
    >
    > > I would recomend using the Sanyo AAA and AA NiMH. They are about $5 a
    > > pair. You can get a charger that will charge them in 5 hours for $20.
    > > Make sure the charger specifies it can charge NiMH.
    > >
    > > I use the AAA for the motor power in a Radio Control car. I get 1.5 to
    > > 2 times the run time with the NiMH as I do with an alkaline. Also the
    > > The NiMH can supply more power without dropping voltage. Even more than
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-14 17:30
    My electronics instructor told me that by simply putting a used alkaline
    battery in a hot oven for a few minutes can also create the illusion that
    the battery has been recharged. He felt that the rechargers that claim to
    charge regular alkaline batteries were just exploiting the effect of heating
    the batteries up to gain some more run time. He was not talking about the
    more modern "rechargeable alkalines" that are being sold now, but rather the
    standard alkaline batteries. I can't say if it is true, but I always
    accepted everything he told me as fact because he showed so much knowledge
    of everything electrical.

    --Dan

    Original Message
    From: "Kerry Barlow" <admin@m...>
    To: <basicstamps@egroups.com>
    Sent: December 14, 2000 9:00 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    > The NiMH are certainly best for your situation. I tried recharging regular
    > alkaline in my Rayovac alkaline recharger and had indifferant success.
    Maybe
    > 50% of the normal alkaline batteries took a charge. A couple overcharged
    or
    > leaked causing corrosion to my charger [noparse]:([/noparse] Rayvac claims there rechargable
    > alkalines have 20 times as much goop inside permitting more recharges. I
    > read that someplace.
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-14 18:06
    Certainly heating batteries up in an oven will produce the effect that the
    battery has been charged, but only until the catalytic effect of the heat on
    the chemical (electrolyte) reaction in the battery has cooled down. When I
    was a kid I would place the old carbon zinc types (well before there was any
    other kind of battery) in front of the fire place which used to give them a
    boost for a short time. Heating the battery does not produce the chemical
    reaction necessary for the migration of electrolyte atoms to their original
    (charged) state. For that to occur, you need to pass a current through the
    cell.



    Jon Enoch
    PCB designer,
    Northern Airborne Technology
    Kelowna,BC
    Canada

    Original Message
    From: Dan Gustafson [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=vzUMj-idl9tNodvE8Ml1vU6QzPJjNoJvbrN5a7YcGYmvz-YnLKwTHRNI7lQP-1w9_xKE9MTI29Dd6sE-aQ]dankgus@e...[/url
    Sent: Thursday, December 14, 2000 9:30 AM
    To: basicstamps@egroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    My electronics instructor told me that by simply putting a used alkaline
    battery in a hot oven for a few minutes can also create the illusion that
    the battery has been recharged. He felt that the rechargers that claim to
    charge regular alkaline batteries were just exploiting the effect of heating
    the batteries up to gain some more run time. He was not talking about the
    more modern "rechargeable alkalines" that are being sold now, but rather the
    standard alkaline batteries. I can't say if it is true, but I always
    accepted everything he told me as fact because he showed so much knowledge
    of everything electrical.

    --Dan

    Original Message
    From: "Kerry Barlow" <admin@m...>
    To: <basicstamps@egroups.com>
    Sent: December 14, 2000 9:00 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    > The NiMH are certainly best for your situation. I tried recharging regular
    > alkaline in my Rayovac alkaline recharger and had indifferant success.
    Maybe
    > 50% of the normal alkaline batteries took a charge. A couple overcharged
    or
    > leaked causing corrosion to my charger [noparse]:([/noparse] Rayvac claims there rechargable
    > alkalines have 20 times as much goop inside permitting more recharges. I
    > read that someplace.
  • ArchiverArchiver Posts: 46,084
    edited 2000-12-15 18:34
    The chemical reaction that provides power in regular alkaline batteries is
    irreversible. Once the reaction completes, the battery is out of power and
    useless. It cannot be recharged. Rechargeable alkalines use a different
    process that is revesible by applying a charge although they are only
    rechargeable about 1000 times. Other rechargeables such as Lion and NiH work
    for more cycles but do not have the charge retention period of rechargeable
    alkalines--there is not free lunch. You have to diecide what is more
    important: cost, rechargeability, shelflife when charged.

    Original Message
    From: Gliebe-Tronics [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=urTpz8kAdPjxZORnV2NgU4Ibz9dxx1gy-BnawtesFHIYkw0ykCHqfr0f6FWasSO1gPoQA5a36UEejgX9Zsa2wFJCZg]gliebetronics@h...[/url
    Sent: Wednesday, December 13, 2000 12:15 PM
    To: basicstamps@egroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    Thanks for the suggestions. I'll probably go with the Sanyo's or Rayovac
    Rechargable Alkalines but does anybody know what it takes to recharge
    regular alkalines? is there a difference between a regular one and a
    Rayovac one?

    Original Message
    From: "Dan Gustafson" <dankgus@e...>
    To: <basicstamps@egroups.com>
    Sent: Wednesday, December 13, 2000 11:58 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    > I agree. Sanyo has always been a big name in rechargable batteries
    > (panasonic makes good batteries too). I use NiMH in my digital camera and
    > get around 2 times the life out of them than Duracell/Energizer alkalines.
    >
    > --Dan
    >
    > > I would recomend using the Sanyo AAA and AA NiMH. They are about $5 a
    > > pair. You can get a charger that will charge them in 5 hours for $20.
    > > Make sure the charger specifies it can charge NiMH.
    > >
    > > I use the AAA for the motor power in a Radio Control car. I get 1.5 to
    > > 2 times the run time with the NiMH as I do with an alkaline. Also the
    > > The NiMH can supply more power without dropping voltage. Even more than
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2001-02-02 15:31
    At 10:34 AM -0800 15/12/00, dano@brightfire wrote:
    >The chemical reaction that provides power in regular alkaline batteries is
    >irreversible. Once the reaction completes, the battery is out of power and
    >useless. It cannot be recharged. Rechargeable alkalines use a different
    >process that is revesible by applying a charge although they are only

    I actually built a small Pulse Width Modulation circuit that charged regular
    Alkalines - I could do it five or six times usually. I found that Duracel
    batteries could actually hold MORE charge when recharged than before!

    The charger worked from a standard 50Hz AC power supply (Australian) dropped to
    6v using a transformer, and charged the battery for 60% of the cycle then
    discharged it for 40% of the cycle.

    Worked well, but if you build one up don't make it look too nice or go to too
    much trouble making it neat. Occasionally the batteries do leak.

    Regs,
    Dave
  • ArchiverArchiver Posts: 46,084
    edited 2001-02-02 16:12
    Well...I stand by what I said. It is not chemically irreversible but
    factory-quality irreversible: hence the leaking and five or six times
    maximum recharge. Sure MAYBE it works a few times but the leakage damage
    which can occur after you charge them and have put them in your device can
    cost you a lot of money--way more than the cost of rechargeable alkalines,
    LIons, Nicads, and NiMh batteries. It is simply: unreliable and potentially
    damaging and so irreversable--you cannot cannot restore a alkaline battery
    to: 1) reliable, 2) leakfree, and 3) economical performance by using it for
    something it was not designed to do. Rechargables are designed for this
    purpose and are usually the cheapest item in you design--why risk your
    expensive design over a cheap part?

    Original Message
    From: David Greenland [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=x8uiaG1OT3X65ScO9CNOnhb21tN5d-Njdk6eYEwJBmEyDGrhEygUUeRDS_0NXT-PORM9Kxq_GAmVnYd6]greenie@z...[/url
    Sent: Friday, February 02, 2001 7:32 AM
    To: basicstamps@yahoogroups.com
    Cc: dano@brightfire
    Subject: RE: [noparse][[/noparse]basicstamps] Alkaline Batt charging?


    At 10:34 AM -0800 15/12/00, dano@brightfire wrote:
    >The chemical reaction that provides power in regular alkaline batteries is
    >irreversible. Once the reaction completes, the battery is out of power and
    >useless. It cannot be recharged. Rechargeable alkalines use a different
    >process that is revesible by applying a charge although they are only

    I actually built a small Pulse Width Modulation circuit that charged regular
    Alkalines - I could do it five or six times usually. I found that Duracel
    batteries could actually hold MORE charge when recharged than before!

    The charger worked from a standard 50Hz AC power supply (Australian) dropped
    to 6v using a transformer, and charged the battery for 60% of the cycle then
    discharged it for 40% of the cycle.

    Worked well, but if you build one up don't make it look too nice or go to
    too much trouble making it neat. Occasionally the batteries do leak.

    Regs,
    Dave
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