Sealed Lead Acid Batteries and heat

[nhfire77]

How are you doing your testing?

Elk BLT (battery life tester).

I don't use the gold IBT, it requires the voltage to be below 13 VDC to test and a lot of panels charge above that level and it's a PITA to draw them down to test.

 

[MisterCMK]

Have you tried doing a functional test? Put the system into alarm for 5 minutes and see where the batteries are at. If possible do a 24 hour battery test. I assume your battery calcs are correct.

 

[zog]

Does anyone have technical info regarding battery life. I have a customer that does not understand why their fire alarm batteries fail load testing every year. The panels are in a utility room that is routinely 85-90 F 24/7/365. (the panels are rated 32-100F)


I know this is killing them but need to show technical reasoning.

I suggest impedence testing, we use the EBITE system
http://www.megger.com/us/products/ProductDetails.php?ID=643&Description=

 

[nhfire77]

I suggest impedence testing, we use the EBITE system
http://www.megger.com/us/products/ProductDetails.php?ID=643&Description=

Does that measure MHO??

It looks time expensive for batteries that cost $15.00 a piece.

 

[ELA]

Does that measure MHO??

What about Larry and Curly

It looks time expensive for batteries that cost $15.00 a piece

Looks like a nice 6K+ tool to have but I have to agree -hardly worth the investment for small $15 batterys.

I sure would like to play with one though.

 

[zog]

Does that measure MHO??

It looks time expensive for batteries that cost $15.00 a piece.

No, it measues Z. Have you looked at IEEE Std 450 for testing requirements for SLA batteries?

 

[nhfire77]

No, it measues Z. Have you looked at IEEE Std 450 for testing requirements for SLA batteries?

No, but I have read NFPA 72. It requires full load testing, and allows for simulated loads. I am on the road without a book to reference a section.

Is that standard available for free?

 

[zog]

No, but I have read NFPA 72. It requires full load testing, and allows for simulated loads. I am on the road without a book to reference a section.

Is that standard available for free?

No, like all real standards you have to buy it, which in turn pays for all the R&D that goes into the standards.

 

[nhfire77]

No, like all real standards you have to buy it, which in turn pays for all the R&D that goes into the standards.

Any chance you would quote the sections you are referring to, I cannot justify buying something like that for this situation.

 

[zog]

Any chance you would quote the sections you are referring to, I cannot justify buying something like that for this situation.

Bascially the entire document would need to be posted, I really don't have the time to type up 150 pages of stuff. I suggest you contact a testing company in your area, most NETA testing companies will have the expertise and equipment to do this type of thing. www.netaworld.org

 

[nhfire77]

Thanks for your input Zog.

 

[glene77is]

http://www.batteryuniversity.com/parttwo-35.htm

Thanks for the website.
Very interesting.