A question about amperage

[decojoe67]

Originally Posted by old_coot88

Well first off, batteries are rated in capacity expressed as amp-hours (or AH), not just "amps". An AH is the the amperage that the battery can sustain for one hour.

A 6V 4AH battery should be able to sustain 4 amps for an hour (or 2 amps for 2 hours, 1 amp for 4 hours, etc.). Same formula would apply for a 6V battery of any other AH rating.

Thank you so much, but please bear with me, the novice I am in electronics. If I could not get any audio out of the speaker with the 6V 4AH battery then how it is possible that I did with the 6V 12AH one? That was my reasoning for going ahead and trying a 6V 20AH battery. Does this reasoning make sense or can I expect to be disappointed with investing in the 20AH battery other than a longer life?