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How is battery capacity calculated ?

To all the electronics gurus on this newsgroup -
how is battery capacity decided - for example
if I buy a 6 Volt 5AH sealed lead acid battery,
how did the manufacturer come up with the number
5AH ?
 
P

Phil Allison

Jan 1, 1970
0
To all the electronics gurus on this newsgroup -
how is battery capacity decided - for example
if I buy a 6 Volt 5AH sealed lead acid battery,
how did the manufacturer come up with the number
5AH ?


** You could easily Google that question you know.

FYI:

For SLA batteries, makers use the "20 hour rate" for the published AH
figure.

So for 5AH, the battery is discharged at 250mA for 20 hours for a final
terminal voltage not less than 1.7V per cell.

http://www.steveduncan.net/assets/images/mfg_curves.jpg


..... Phil
 
A

Artem

Jan 1, 1970
0
To all the electronics gurus on this newsgroup -

how is battery capacity decided - for example

if I buy a 6 Volt 5AH sealed lead acid battery,

Who is the manufacturer? Some manufacturers provide discharge/charge curves. Bear in mind that the lead-acid batteries rapidly degrade at 100% charge / discharge cycle.
 
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