Cheap digital battery testers compared: Aneng BT189 vs. Aneng BT168 Max. Get the 168 Max!

I recommend the Aneng BT168 Max out of the two testers. The other tester may have a design flaw, demonstrated in this video from Julian Ilett:
• The BT189 Battery Test...
I tried and was not able to replicate that particular flaw; perhaps because the tester has been redesigned?

[@astanisystems]

Those are convenient, but I always use a good multimeter. Fluke is too expensive, unless you're an electrician or run a tech repair business. You could also retrofit any battery housing into a battery tester by using a cheap voltmeter or multimeter and have leads connected to housing output terminals/wires. All in all, I think that the BT189 unit is more user friendly and convenient because it tells inexperienced people where to slot the battery they want to test.