[DonRotolo]

As a quick test, the Beak is great. We use one all the time.

IF you can maintain about the same conditions (see Al's post) for each test, then monitoring the battery's internal resistance over time can give some good clues as to what's happening inside. But consider these as relative measurements, not absolutes.

The West Mountain Radio Computerized Battery Analyzer (CBA IV) actually discharges the battery at a rate you can set - stock is up to 150 W which means over 10 Amps, and you can buy an 'amplifier' load for IIRC 450 Watts.
However, even knowing the actual number of Amp-hours the battery can deliver at 10 A doesn't tell you what it will deliver in competition. So again, this should be considered a relative reading, valuable to monitoring battery health, but not for checking against manufacturer specs.

If we focus on FRC, what we "really" need to know is covered by the Beak: A relative indication of health, and present State of Charge.

All that being said, WinDnDusT, #1 and #3 aren't reasonably easy, but #2 is really what you 'need', and is very do-able with a Beak. (Just one caution: If the battery is "bad", it is - don't use it for the stands, as it may be more hassle than it is worth. Recycle it instead.)