MBT-1. Tests batteries under load
Strangely there are 2 different MBT-1 testers...one for dry cells and one for 12v auto style wet-cells....
https://www.amazon.com/dp/B000FQG1XE/?tag=atomicindus08-20
https://www.specialized.net/pulsete...YJFPCCIA_UH5ZkXaHcPliotC7a6ho7_EaAsYhEALw_wcB
Household batteries or Vehicle batteries??
Are we talking about the same thing??
I don’t think that for $7 you’re going to get the circuitry to test a battery under load.
I literally linked the datasheet shows that it is testing under load.
If you don't want the $7 tester, that's totally fine.
But it does test under load.
Do you want to test under a higher load than 4 ohms (which at 1.5v means 375mA and about half a watt or so)? I can see how you might want to do that with C and D cells. I think 375mA should be reasonable for testing AA and AAA at least.
The ZTS might fill a gap between the cheap testers and the expensive battery capacity testing stuff (or electronic load) though.