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Subject: "Rechargeable Batteries" Previous topic | Next topic
_Chewy_Tue Aug-08-06 10:41 PM
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"Rechargeable Batteries"


  

          

I recently bought a battery charger and in my haste I think I might have thrown out the manual that came with it. Does anyone have an idea how long does it take to charge 2 AA batteries 2000 mAh and 2 AAA batteries? I plan on recharging them separately.

  

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Replies to this topic
Subject Author Message Date ID
RE: Rechargeable Batteries
Aug 08th 2006
1
RE: Rechargeable Batteries
Aug 08th 2006
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      RE: Rechargeable Batteries
Aug 09th 2006
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           RE: Rechargeable Batteries
Aug 09th 2006
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                RE: Rechargeable Batteries
Aug 09th 2006
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                     RE: Rechargeable Batteries
Aug 09th 2006
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                          RE: Rechargeable Batteries
Aug 09th 2006
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                               RE: Rechargeable Batteries
Aug 09th 2006
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                                    RE: Rechargeable Batteries
Aug 10th 2006
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                                         RE: Rechargeable Batteries
Aug 10th 2006
10
                                              RE: Rechargeable Batteries
Aug 10th 2006
11
                                                   RE: Rechargeable Batteries
Aug 10th 2006
12
                                                        RE: Rechargeable Batteries
Aug 10th 2006
13

ShellyTue Aug-08-06 11:33 PM
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#1. "RE: Rechargeable Batteries"
In response to _Chewy_ (Reply # 0)


  

          

Anywhere from 30 minutes to 8 hours depending on the type of charger. It is best to charge batteries at least in pairs. Any decent smart charger will signal when the batteries are fully charged, and drop to a trickle charge rate if you don't remove the batteries.

Shelly

  

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_Chewy_Tue Aug-08-06 11:54 PM
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#2. "RE: Rechargeable Batteries"
In response to Shelly (Reply # 1)
Tue Aug-08-06 11:55 PM by _Chewy_

  

          

>Anywhere from 30 minutes to 8 hours depending on the type of
>charger. It is best to charge batteries at least in pairs. Any
>decent smart charger will signal when the batteries are fully
>charged, and drop to a trickle charge rate if you don't remove
>the batteries.

I found the following information on the back of the charger. Does this help?

Ni-Cad \ NiMH battery charger
Input 120 V ~ 60 Hz 6W
Output: AA 2 x 2.8 V 300 mA
AAA 2 x 2.8 V

  

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ShellyWed Aug-09-06 01:21 AM
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#3. "RE: Rechargeable Batteries"
In response to _Chewy_ (Reply # 2)


  

          

No that is very basic information. I suspect the charger has a brand name and model on it, I suggest you google the name and see if you can find out what its specs are and maybe even download a manual.

Shelly

  

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_Chewy_Wed Aug-09-06 02:55 AM
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#4. "RE: Rechargeable Batteries"
In response to Shelly (Reply # 3)
Wed Aug-09-06 03:01 AM by _Chewy_

  

          

I always charge in pairs anyways, but I was wondering about your comment earlier and why it's best to do it in pairs?

I'll try to google the manufacturer later on. Thanks.

Edit:

Is there any harm in overcharging NiMH batteries? I charged 2 AA batteries today at 12pm and by 5 pm they felt warm to the touch and so I removed them right away.

  

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JPWed Aug-09-06 04:44 AM
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#5. "RE: Rechargeable Batteries"
In response to _Chewy_ (Reply # 4)


          

Any charger will heat up the batteries, sometimes almost too hot to touch. The charger should automatically shut off once the batteries are fully charged. My chargers have indicator lights to let me know.

Some FAQs here: http://www.greenbatteries.com/

  

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_Chewy_Wed Aug-09-06 05:34 AM
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#6. "RE: Rechargeable Batteries"
In response to JP (Reply # 5)


  

          

>Any charger will heat up the batteries, sometimes almost too
>hot to touch. The charger should automatically shut off once
>the batteries are fully charged. My chargers have indicator
>lights to let me know.
>
>Some FAQs here: http://www.greenbatteries.com/

Thanks for the link JP. I realize batteries do become heated up during the charge - my only concern here is "overcharging" them. And since there is no indicator to let me know when it's fully charged, I have to do a little 'guestimating'. I looked on the manufacturer's website (Uniross) and unfortunately my model is not listed. It must have been phased out of production.

  

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ShellyWed Aug-09-06 06:26 PM
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#7. "RE: Rechargeable Batteries"
In response to _Chewy_ (Reply # 6)


  

          

Although NiMH will heat up during charging, heat is a battery's worst enemy. If your present charger takes over 5 hours to charge the batteries, you need to buy a decent new charger. Any worthwhile charge should be microprocessor controlled, and charge a fully discharged set of batteries in no more than 1 hour. All good chargers will also have fans to keep the batteries cool during charging.

Here is the charger I have:

http://www.lenmar.com/details.asp?model=MSCAA

It comes with four high capacity AA batteries

Shelly

  

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_Chewy_Wed Aug-09-06 08:03 PM
Member since Dec 07th 2002
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#8. "RE: Rechargeable Batteries"
In response to Shelly (Reply # 7)


  

          

>Although NiMH will heat up during charging, heat is a
>battery's worst enemy. If your present charger takes over 5
>hours to charge the batteries, you need to buy a decent new
>charger. Any worthwhile charge should be microprocessor
>controlled, and charge a fully discharged set of batteries in
>no more than 1 hour. All good chargers will also have fans to
>keep the batteries cool during charging.
>
>Here is the charger I have:
>
>http://www.lenmar.com/details.asp?model=MSCAA
>
>It comes with four high capacity AA batteries

That's one helluva charger. 1 hour charge time packed with features. Looks good. Were it not for the fact I just did a shopping spree on some summer clothes and music CDs I would probably bite the bullet and buy one. I'll bookmark it for future reference however. Thanks.

  

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JPThu Aug-10-06 01:23 AM
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#9. "RE: Rechargeable Batteries"
In response to _Chewy_ (Reply # 8)


          

There are chargers with matching batteries that will charge in 10 or 15 minutes. My understanding is that for it to be that quick you have to use their batteries.

I go for years on sets of AA batteries that get hot in the charger. Heat is an enemy, but not certain death.

  

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Bob GThu Aug-10-06 04:15 AM
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#10. "RE: Rechargeable Batteries"
In response to JP (Reply # 9)


  

          

The site is going through one of its periodic slowdowns, but here's a thread you may find interesting.

http://candlepowerforums.com/vb/showthread.php?t=70935

  

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_Chewy_Thu Aug-10-06 07:49 AM
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#11. "RE: Rechargeable Batteries"
In response to Bob G (Reply # 10)


  

          

Thanks for the link Bob. The Titanium TG 1000 model sounds better to my budget at this point.

  

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ShellyThu Aug-10-06 01:44 PM
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#12. "RE: Rechargeable Batteries"
In response to _Chewy_ (Reply # 11)


  

          

How about the Lenmar Mach 1 for $22.40 from a reputable dealer, and no tax?

http://www.amazon.com/gp/product/B00009R8GT/sr=1-1/qid=1155220605/ref=pd_bbs_1/103-7939809-9894215?ie=UTF8&s=photo

Read the reviews.

Shelly

  

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Bob GThu Aug-10-06 05:51 PM
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#13. "RE: Rechargeable Batteries"
In response to Shelly (Reply # 12)


  

          

Amondotech is a reputable dealer, but he caters to the hobbyist world, RC and flashlights for instance, so not well known outside that I'd guess. Most of his "TG" chargers are Vantec I think - I have two and they're both Vantec. He's also somewhat leading edge - he has an Eneloop clone for sale now. Lord knows when Sanyo will make them available in the US. Word is that they're trying to figure out shipping (keeping them cool so they can support their "buy them and use them" marketing) without raising price. Also, his AA NiMH batteries are some of the best "consumer" batteries around if holding voltage against highish current is your criteria.

  

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