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To answer your question:
An amp-hour (Ah) rating on a battery <mark class=”QVRyCf”>indicates its energy storage capacity, specifically the amount of current a battery can deliver over a period of time</mark>. A higher amp-hour rating means the battery can power a device for a longer duration before needing to be recharged.
So I read that as meaning a high amp hour battery, can store more juice, thereby lasting longer.
Hope this helps…
Richard
A higher amp/hour also has the potential to deliver more current for the same time (ex: a 1o amp/hour will deliver 10 amps of power for 1 hour, or 1 amp of power for 10 hours). As you say, it will last longer, but there could be a possibility of too much energy. Usually modern applications will only draw the current they need, but I am not sure weather or not that is applicable to something 100 years old (especially considering that I am possibly running it on the original coil). If you have had success with higher amp/hour batteries, then they are probably fine and I may look into them.
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