Alternator Capacity for 1968 Dodge Dart 270/SL-6

Sequence of pretty normal recharging immediately after start.
This is with a later squareback, a standard roundback probably would be a less current in the first minute, and take a little longer to recharge.
Batteries general do better recharging at lower rates, especially AGM's.

Engine idling around 1000 rpm.
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Its worth mentioning here - The ammeter is labeled 'Alternator' but it only shows current to and from the battery. Its not the alternator output.