Too bad they don't give a ma hour rating for the battery...
I could not find one for the original battery either, since it was dependent on the way the battery is used.
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Eveready #226 Estimated Hours Service at 70 degrees F.
(@ 2 hour/day use, cutoff voltage=4.8 volts, 6.0 Volts)
@ 5ma (1800 ohm load)------150 hours, 130 hours
@ 7ma (1300 ohm load)-------117 hours, 98 hours
@11.5 ma (780 ohm load)------68 hours, 57 hours
@16 ma (560 ohm load)---------44 hours, 33 hours
jr