How check with devices powered batteries

Batteries are always present in our lives. From watches to cars with remote or flash, they all need energy, we withdraw from the mundane batteries.
The problem occurs when we have so many batteries around the house that I do not know which is loaded and discharged.
Meter is a tool that helps us to see how the battery is loaded. Unfortunately, not everyone has the multimeter or not everyone cares to look for it / use it, just to check the batteries.
The fastest way to detect discharged batteries is to "hit them lightly on the table" and observe the reaction. This method of checking the batteries really works, and it's not a fabrication.

How check with devices powered batteries

How check discharged batteries?
Draptă on a surface, solid and stable, from 5 cm, the battery easily escape in a controlled manner. If the battery jumps easily, it is discarded or used for a longer period. The batteries charged, not conduct it, they are hit easy meal. Charging the batteries, if they stick to the table, do not jump at all.
Interesting observation!
If you use this method to check the batteries downloaded more time, you will realize that batteries are discharged than others; Because not all jump as batteries.
It may be something in battery to power, but insufficient for serious electronics.
How does the method to check the batteries?
Batteries are made up of three main components, among others. We anode, cathode and electrolyte, which in the case of alkaline batteries, is a base (alkaline) the consistency of a gel. When the battery is used, the chemical reaction occurs that produces current. The chemical reaction that transforms the electrolyte, the gel into a solid mass, crystallized. Therefore batteries or near consumed, are jumping.

Video tutorial - How to check discharged batteries without devices

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About Cristian Cismaru

I like everything related to IT&C, I like to share the experience and information I accumulate every day.
Learn as you learn!


  1. but beware lest you Taiti was dumped into water cut battery. it will explode quite violently. and be careful how and where to cut due to moisture may explode. for saying that Cristi gel that reacts very violently with water. If you want to experiment outside but do not bang facetil advise for the eyes can burst or hitting someone. and even when it discharged explode as remnants of gel. Additionally, make sure that it is highly toxic and can even contain other heavy metals besides mercury

  2. Hello. a linux video tutorial with personal mail server installation and setting is possible? I have a web server and I keep a page "". now I would like to have a personal email "[email protected]”. I don't really trust free or paid hosting… if I still have a linux server I would keep it to myself.
    if you do not have time or have other reasons a more explicit guidance on how a beginner in internet mail servers on Linux? I searched I give I give commas. Saying no one from head to tail exactly how.

    • My advice would be to pay for hosting. Find and 1 dollar a month, and you'll have plenty of tools at your disposal.
      The server kept home is the worst idea. First you'll have non stop noise. Net providers do not really agree with servers at home, and sometimes block the ports 25, 21, 22. Current'll consume more than 1 dollar per month. Problems will arise in time, they will waste energy and will keep you in business.
      Email server kept at home can be seen as a source of spam; And if that happens, your server will become useless.
      Seriously; I do not recommend!

      • yes christ I know, you're right. I found 6 euro / month hosting full options. I would like to know how to make a mail server on linux and I thought I was not the only one who wants it. the closed port was 25 for which I made a request to unblock it and I closed it from the server so as not to make spam by mistake, until I succeed in something concrete with the mail server. there are many companies that have linux server with: web server, mail, ftp… .. I don't think it's very difficult but I still haven't found the concrete information.

        • Hello
          I hope to be helpful.
          Server you can do at home quite simple, if you already nume.domeniu, I guess you already solved dynamic DNS so always point to your dynamic IP.
          To make a server, search for a tutorial on installation: Postfix + Dovecot + SpamAssassin + clamav + mysql (optional, but it's easier to progestins users) is a pretty good combination. Owning something for years, go smoothly.

          • Hello . thank you for the advice . I did something. Only I send mail to the destination but it does not go the other way. I can't receive mail. Not even in spam. I think there's something else to set up on rotld or on my dns server. I do not know…
            I still have to study …

  3. Hello Cristi
    It would be interesting one or more tutorials on computer auto ECU, encompassing and software to write and erase instruction

  4. Hi. I entered ""To see the tutorial and it appears" couldn't load plugin ". Why can't I see it?

    • To watch that tutorial, you need flash player. Perhaps you do not have flash player installed correctly or not use plugins that block the flash or scripts.
      I tried on the different browsers with Flash Player and going well.

  5. Thank you, very useful!

  6. I greet you and wish you a new year of health for all, not least, those of
    Please help me and me to a problem that does not give head.
    I have an Acer Aspire One small and can not instalz windows lam xp.Precizez as before when bought new XP installed on it, but after a while I installed Windows 7.Acum moves hard and mam thought that if you go back to XP a move more bine.Si me say that will not boot from stic.Ce por do? I thank you from the bottom of my heart.

    • I also have a maple with 10 ″ diag. Intel Atom processor, win xp came from the factory. I put win 7 starter and it works well not very well. The boot sequence is set from the BIOS. To boot from anything, search in google poplar
      Happy Birthday and a lot of health!

    • Vasile, the only option for you to install XP on the netbook is to buy an external dvd on usb… 150 lei, insert the cp with the xp into the external dvd, connect to the usb port ... select to boot from the external dvd. .in the BIOS check the ports to be on the IDE not on the AHCI otherwise it will not work give F10 to save the Bios settings and follow the installation steps.
      Happy New Year.

  7. Hi Cristi, recently I fried the meter, the rush I plugged in without giving the diode on alternative and was melted wiring: I saw in your tutorial a meter and I'd like to know the and whether the price is worth it to me and I buy one. Thanks

    • I honestly do not even know how he got this measuring device to me. I think I've got from my brother.
      I do not think multimeter is great tool, but do your job with him.
      Find equipment like this through specialty stores or on eBay or Amazon.

  8. Happy Birthday and health and you fulfill all wishes and 2016

  9. QI have you looked at?

  10. Ctisti I have a request that is not related to the subject of this tutorial. Last summer an android phone was launched on the market for the possibilities of those who have a low budget… Allviev A5_Easy. Can I make a tutorial for root this device? The software is android 5.1 Lollipop.

  11. You're hard Cristi, as a rule.

  12. Hi, could not create a forum of this website say in which to discuss all kinds of things, not to find tutorials on batteries commenting questions about installing Win XP. I assume that the site has enough visitors and those who have problems and would need help to find it could then. Certainly would find little moderation and volunteers Videotutorial pebtru team to be able to focus on their core occupation. I hope you are comfortable with the idea of ​​forum and especially to be feasible. All the best.

  13. HimlerSS said

    I test them otherwise until now. Stuffing a finger in his mouth to moisten it and make it negative terminal of the battery then touched tongue terminal of the battery. If I'm running, it means that were not downloaded :))

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