My batteries recharges all alone !!! oo

Hi-tech electronic and computer equipment and Internet. Better use of electricity, help with the work and specifications, equipment selection. Presentations fixtures and plans. Waves and electromagnetic pollution.
Yuril
I learn econologic
I learn econologic
posts: 27
Registration: 25/05/09, 18:05

My batteries recharges all alone !!! oo




by Yuril » 11/04/13, 00:40

Hi the éconologues!

I go to see you because I have a concern, I know it's hard to believe but my rechargeable battery recharges all alone!

You must say that I am completely crazy and even I hesitate to come and ask for help ...

I have many qustions:

- Already did this possible?
- Have you heard or seen a similar problem? (If you can call it that!)

Feature of batteries:
AA - HR6
2500mAh
NIMH 1,2V
Brand CLARTECH

I buy these batteries there are around 6 months (a pack of batteries 4) but I begin to use it there 2 months.
I do some electronic hacking and I test LEDs, electric motors ...
Since these months 2 I do not reload because it was short tests and therefore plausible for 2500mAh.

Tuesday I test the batteries which are in series in a block of digital apparatus to disassemble to see what voltage I have left, result 4,5V (knowing that 4 x 1,2 = 4,8V), I say to myself "weird they hold well the blow these batteries "! (at the same time it suits me because I do not yet have a charger, at least not for NIMH)
evening that intrigue me anyway, so I decide to unload the left to buy me a magazine then.
I connect a PC fan, it took about 5h 6h or that the fan stops spinning, I resumed the battery voltage, 1.60V result, I test my batteries on a plate 17 LED flashlight, nothing turns on, then ok normal batteries are discharged and I'm going to bed.

The next day I decided to go find a charger for the tecno NIMH, but just before leaving I decided to test the batteries and there was a big surprise the multimeter displayed 4.35V! I say to myself "what the hell! My multimeter must be out!", I do the test with the plate of 17 LEDs and they light up full pot!
That's when I decide to come to you to ask for help ...

I imagine it's rather hard to believe because if someone told me that, I would say "drugs are bad!".

So those who want to believe I want to be light on this problem not very common.
Am I subject to strong electrostatic / electromagnetic waves in my apartment? or another type of wave?
If so does it's conceivable that recharge batteries in a few hours?

Thanks for reading me.
0 x
User avatar
Obamot
Econologue expert
Econologue expert
posts: 28725
Registration: 22/08/09, 22:38
Location: regio genevesis
x 5538




by Obamot » 11/04/13, 05:28

It's not at all hard to believe!

First it is not only the voltage but also the amperage. This is not because your voltage is lower than the battery is dead, since your voltmeter does not measure all!

Then and there it specifically answer your question:
1) this phenomenon also happens with alkaline (rather with them anyway?)
2) it is understandable by the fact that batteries / rechargeable batteries, before it is electricity, is above all chemistry, and therefore it is not inert, but it "works" all the time "chemically" inside.
3) I do not know the exact cause, (a chemical phenomenon of regeneration due to their nature ...) but this phenomenon is frequent (it happens all the time, so that if you go to see in the recycling bins used batteries at the collection points, you can easily collect the batteries you see, at least a third will still walk for "a turn")

But here there are real-battery specialists who will surely give a more detailed explanation. : Lol:
0 x
oliburn
I understand econologic
I understand econologic
posts: 181
Registration: 30/01/07, 07:59
Location: 33 Mérignac




by oliburn » 11/04/13, 06:43

whether you live next to a nuclear power plant, or you asked
your batteries close radiator or a small recharge it
produced following a "false" complete discharge that happens to me on
a camera when it turns itself off following a full pot use and working again the next day, but as said abamot not worth confuse voltage and amperage ...
either your batteries are from Lourdes
: Idea:
0 x
Be your own torch, your own refuge, your own master ... "
Alain G
Econologue expert
Econologue expert
posts: 3044
Registration: 03/10/08, 04:24
x 3




by Alain G » 11/04/13, 07:57

Yuril Hello!

No secret or worry on dark waves from nothingness!

It's still the 2500 mAh and chemistry is at work, the fact still turn your LEDs tomorrow simply is that the acid has moved into the stack finding the positive and negative plates and the voltage is income blunder but not too empty otherwise you will damage the.


Welcome to the chemistry of batteries!

: Mrgreen:
0 x
Stepping behind sometimes can strengthen friendship.
Criticism is good if added to some compliments.
Alain
Yuril
I learn econologic
I learn econologic
posts: 27
Registration: 25/05/09, 18:05




by Yuril » 11/04/13, 08:59

Oh thank you for your answers! ^^

I'm crazy for nothing then. : Lol:

To check the amperage how do I do? I place a resistor + and - terminal of the battery and I glue the ammeter?
The worry is that my ammeter is HS.
Is there a way to know without ammeter intensity?

I redécharger my cell that night, there are a 1.47V, so I'll wait a few hours and take the tension to see.
0 x
jean.caissepas
I posted 500 messages!
I posted 500 messages!
posts: 660
Registration: 01/12/09, 00:20
Location: R.alpes
x 423




by jean.caissepas » 11/04/13, 09:29

Yuril wrote:To check the amperage how do I do? I place a resistor + and - terminal of the battery and I glue the ammeter?


The simplest is to connect the battery to a load that uses a lot of Watts, like your PC fan (and not LEDs that consume little amperage).

If the fan stops quickly (<5 to 10 minutes), your batteries are "empty".

I've seen the same behavior on saline batteries 4,5v:
The battery no longer lights, but the next day it lights up again but only 10 20 seconds!
0 x
Past habits must change,
because the future must not die.
Yuril
I learn econologic
I learn econologic
posts: 27
Registration: 25/05/09, 18:05




by Yuril » 11/04/13, 09:54

I just took the tension, 3.56V, I plugged the ventillo as you say Jean and actually it turns only a few minutes.
I should have done this test before frighten me. :x

I have a last question:
Do I charge NIMH batteries on a Ni-Cd charger?
0 x
User avatar
Gaston
Econologue expert
Econologue expert
posts: 1910
Registration: 04/10/10, 11:37
x 88




by Gaston » 11/04/13, 10:57

Yuril wrote:I have a last question:
Do I charge NIMH batteries on a Ni-Cd charger?
Yes, but the final charge will not be correctly detected and you risk damaging your batteries.

The right solution (pending a NiMH charger) is to stop charging after a certain period. The batteries are not fully charged, but they will not be damaged.

For example, if your batteries are 2500 mAh charger and your dependents 1 A, do not charge more than 2 hours.
0 x
Yuril
I learn econologic
I learn econologic
posts: 27
Registration: 25/05/09, 18:05




by Yuril » 11/04/13, 11:19

Ah ok, good for now I'm going to like that. ^^ The charger charge 150mA it is a very slow charge so I can probably leave them more time.
0 x
User avatar
Gaston
Econologue expert
Econologue expert
posts: 1910
Registration: 04/10/10, 11:37
x 88




by Gaston » 11/04/13, 11:23

2500 mAh / 150 mA = 16,7 hours.

Since they are rarely completely empty, I do not dépasserais 12 hours of charging.
0 x

 


  • Similar topics
    Replies
    views
    Last message

Back to "Electricity, electronics and computers: Hi-tech, Internet, DIY, lighting, materials, and new"

Who is online ?

Users browsing this forum : No registered users and 146 guests