How many Amp Hours are my batteries?

[Mr Chrysalis]

My batteries have a label that says
75Ah 100Ah and 110Ah. Can anyone tell me which they are or how I find out?

 

[Boris7]

https://cdn.tayna.com/datasheets/95751-Banner-Battery.pdf

95751 Banner Energy Bull Leisure Battery 12V 100/110Ah

95751 Banner Energy Bull Leisure Battery Banner, <i>The Power Company</i> have been producing top quality since 1937. Coming out of Austria and distributing predominantly across Europe and Asia. But like all the big battery companies they ship to worldwide distributors. Banner Batteries...

www.tayna.co.uk

take the larger (Font size) 100Ah

 

[SandraL]

The quicker you discharge batteries the less their ah capacity.
So with your labels
K5 75ah. If you discharge the battery over 5 hours it is advertised as having 75ah
K20 100ah. Over 20 hours you have 100ah, this tends to be the standard claim
K100 110ah, over 100 hours the capacity increases to 110 ah

So at 20 hours,. 100/20=5 amps. ie 5amps for 20 hours until fully discharged.

 

[Robert Clark]

 

[Mr Chrysalis]

Thanks Guys, makes sense!

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[PhilandMena]

The C20 (controlled discharge over 20 Hrs) is generally accepted as the industry standard for measuring AH. Although some manufactures use a different calculation so they can market the batteries with a higher rated AH making them more attractive to potential buyers. Such as 95Ah at a 20 hour rate, 80Ah at a 5 hour rate and 105Ah at a 100 hour rate.