Friday, April 5, 2013

Hydrogen evolution rate from lead acid battery

Do not charge any lead acid battery in air tight container.

All lead acid batteries release hydrogen during operation.  In flooded lead acid batteries the hydrogen evolution is normally much higher than that of (Valve Regulated Lead Acid) VRLA/ (Sealed Lead Acid) SLA cells of the same size.  Excess accumulation of hydrogen can lead to explosive conditions.

In VRLA/SLA batteries most percentage of hydrogen is generated are recombined to form water and hence only lower percentage is released.

Volume of hydrogen release may be approximated using the following formula for flooded lead acid batteries, after the fully charged condition.

Volume of hydrogen released (cubic feet/hour) = Vh = 0.015 x FC

Where FC is Float Current in Amps.

During charging majority of the current will go towards charging the battery.  Amount of current going towrds hydrogen generation will depend on many factors like, temperature, battery design, available current etc.,

For VRLA batteries under normal operating conditions at 77F depending upon the battery design 90 to 99% of the hydrogen is recombined.  Check with the manufacturer for recombination efficiency of a particular battery.

For calculating the amount of hydrogen released can be calculated by using the recombination efficiency.

If you have any question regarding this feel free to contact us.

Battery Consulting
(877)394-3941

6 comments:

  1. Hi I go through your site blog is so good having good information about the Lead acid battery manufacturers. We are the one of the best Manufacturer and supplier of Lead acid battery. Just visit our site Lead smelters and battery recyclers manufacturers

    ReplyDelete
    Replies
    1. Hi You,

      There’s a new way to bring nearly any type of old battery back to life ...so it’s just like new again.

      This method works with nearly every type of battery out there ...and it’s simple and quick.

      >> Click here to learn this secret battery reconditioning method <<

      In case you’re wondering, you’ll be able to bring car, phone, and laptop batteries back to life with this.

      It even works with solar/off-grid, marine, golf cart, and forklift batteries. Plus, many more!

      >> Click here to learn how to bring your dead batteries back to life again <<

      With this recondition battery secret, you won’t have to buy new expensive batteries anymore. You can just recondition your old, used batteries and save a lot of money!

      And >> This new video presentation << shows you how:


      Best regards.






      .

      Delete
  2. Nice information! Its useful for all. Thanks for sharing your information.
    Lead smelters and battery recyclers, Lead acid battery manufacturers

    ReplyDelete
  3. Your post is very nice. useful information. Thanks for sharing.
    I have a page on Lead oxide Manufacturers
    Visit my page here
    Lead Ingots Manufacturers

    ReplyDelete
  4. The informative provided in this blog was awesome. Thanks for sharing your knowledge and views through this blog Lead acid battery manufacturers in bangalore | Inverter battery supplier

    ReplyDelete