Lead Calcium Batteries?

ligwydligwyd Registered Users Posts: 90 ✭✭
Just learned about Lead Calcium batteries. Found an add from a guy selling a set of them that were purchased in 1974 and says they are still working perfect and should last a lifetime. Obviously, I am sure there is a reason they are not widely distributed today, as far as I am aware, however I am interested to learn if anyone here has had any experience with this type of battery technology. I get excited when I here about  a battery that will work for the rest of my life.!

Comments

  • mike95490mike95490 Solar Expert Posts: 8,121 ✭✭✭✭✭
    A 20 year life is spectacular for any lead acid battery. I can't see how those from 74 would be an exception.  Hold onto your $
    https://batteryuniversity.com/learn/article/lead_based_batteries
      Adding antimony and tin improves deep cycling but this increases water consumption and escalates the need to equalize. Calcium reduces self-discharge, but the positive lead-calcium plate has the side effect of growing due to grid oxidation when being over-charged. Modern lead acid batteries also make use of doping agents such as selenium, cadmium, tin and arsenic to lower the antimony and calcium content.
    https://batteryuniversity.com/index.php/learn/article/how_to_restore_and_prolong_lead_acid_batteries

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  • ligwydligwyd Registered Users Posts: 90 ✭✭
    Seemed a little to good to be true.
  • BB.BB. Super Moderators, Administrators Posts: 28,441 admin
    Here is a nice summary on the basics of UPS/Standby batteries and their life (FLA may get 15+ years--Such as some traction/forklift type batteries, VRLA/AGM may get 5-7 years):

    http://www.power-thru.com/documents/The Truth About Batteries - POWERTHRU White Paper.pdf

    In decades past, the only 40 year life telecom batteries I have heard of were those that were cycled to a maximum of 85% state of charge (15% discharge).

    Can you get a battery brand and model number to look up?

    In general, calcium was added to lead acid batteries to reduce gasing (used less distilled water). Other than that (less water usage, longer life because of less hydrogen/oxygen generation), there is nothing that (I know of) that would give you 4-5x longer battery life.

    https://en.wikipedia.org/wiki/Lead–acid_battery

    But I am not a battery engineer. There are batteries that can be nearly "lifetime" batteries--Such as the old Edison Nickel Iron batteries--But even those have some pretty significant maintenance and charging design requirements that make them a bit of a pain.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • mcnutt13579mcnutt13579 Registered Users Posts: 91 ✭✭✭
    BB. said:

    But I am not a battery engineer. There are batteries that can be nearly "lifetime" batteries--Such as the old Edison Nickel Iron batteries--But even those have some pretty significant maintenance and charging design requirements that make them a bit of a pain.

    And extremely low charge/discharge efficiency ratio.
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