Mine just arrived today and I used it to test my motorcycle battery which has been giving me problems lately. Just as I suspected it was bad. It's nice having a tester to take the guess work out of things. Very happy with the quality and usefulness of the Topdon BT200.
I have an old Harbor Freight analog battery tester with alternator and load test function. It smokes on the load test, ha - but otherwise has lasted 20+ years. This one obviously is much more sophisticated.