And what's the difference between an ammeter and an - ahem - alternator load meter? Does the latter indicate megaergs per second, perhaps?
Myself have an old-fashioned ammeter in my home-concocted dashboard, and comfort myself with a quick glance right after starting: it shows a brisk charge peak, to go back to "almost zero" very soon, and remain so for the rest of flight. It is a bit coarse, though, at 60-0-60 Amp - I'd much prefer 10 or 15 amp each way. Some promise in the lawn-mower market, but I must find the time to investigate.