#507 Add amp hours (Ah) to the units.txt

Jason Whittier Tue 27 Jun 2017

I would like to propose adding amp hours to electric charge in the units.txt. We recently ran into a need for this, and it would be good to have in the standard units file.

ampere hour, Ah; sec1*A1; 0.000277778

Matthew Giannini Tue 27 Jun 2017

I just updated the Fantom units database to add this unit. The definition is actually like below. We already had the coulomb unit defined, and 1Ah is equal to 3600C.

 -- electric charge (sec1*A1)
 coulomb, C; sec1*A1
+ampere_hour, Ah; sec1*A1; 3600


Leroy Simms Mon 25 Sep 2023

I'm curious how people are tagging an amp-hour point. I have a current sensor reporting accumulated amp-hours, by the above definition one would assume it should be something like


though charge seems odd for flowing current, but every other tag combination I come up with seems like it would cause a potential search conflict with other points.

Interested in others thoughts.

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