NEIKO 40510A Car Battery Tester | 100 AMP 6 and 12 Volt Automotive Load Checker | CCA Analyzer

Works as stated. I have two of them, one at lake , one at home. Great way to check on the viability of car/ boat batteries. Worth every penny!

Make sure you read the book it says it'll get hot enough to burn you and cause property damage that it can it says it will get hot enough and will burn you. It worked a couple seconds used it to test one battery. As soon as you hook up the cables instantly goes to where it should be so you can unhook it then if that's all you wanted to do then with the load tester you know hook up the cables and instantly reads and then hit the load tester maybe two seconds and it goes right to where it should there's no need to run it any longer than 2 seconds then unhook it. Used it a few I like it. It does get warm fast probably hot like booklet says if you hold the load tester mire than a few seconds. It did smoke till the 5th use now no smoke. Cheap price no big name brand but it works great.

Roughly does the task I asked it. A star deducted because not quite a 100A load due to resistance being 0.2 Ohms measured with switch depressed. For my expected voltage range of 12.8V (fully charged lead acid), I can only manage a draw of 64A when cold. I imagine when the resistive element inside gets glowing orange, it's probably less current, as materials become more resistive as they heat up (usually exacerbating the heat until pop goes the wire). The clamps and wire also acts as part of the resistive element and needs to be cooled fully between battery tests or it will become a molten pool. This is why it's on a dead-man switch (when you let go it turns off). So by my figurin', if the gauge is rated for a 100A draw, it's off by 64%! That's not great, but you can just judge how deep it plunges after a load for 15s or so as a pretty good sign if it's toast. Don't think I'll trust the actual gauge, otherwise it's a pretty decent resistive element for high amperage. Wait... if it's off by 64% I might need a battery after all... if ONLY I HAD A TOOL THAT RELIABLY TOLD ME....

This is great for checking your battery voltage, as well as alternator working. Shouldd read 13 volts or more when alternator and motor is running.

Kallstrom Sweet Corn uses a lot well made

Doesn't get better than these old school manual style tools, no electronics just straight information that you can trust

works great

Excellent

Excelente si tienes taller o eres hobbista

Great price for the job it does.

I didn't like it not accurate

good to have

Buenaa