Battery Load Tester 100 Amp 6/12V with Metal Switch

The Q-Tech Battery Load Tester is a Handy Tool to have , I like that it's simple to use and accurate, I use the Tester to check my Jump N Carry Booster after I charge it, Give me spot on readings. Also good for Auto Battery checks as well. Just follow directions and you can't go wrong, Works as advertised, Priced good, shipping is fast, Buy it if you have a need for one of these units,

I have used this type of tester for many many years. This works just fine. For diy people, read instructions thoroughly. It works.

I just don't know how to trust the new compact load testers with digital readouts. According to physics, to load test, you must place a small valued, high power resistor across the two terminals that results in a large amount of current between them, then monitor voltage drop or current and see if the battery can provide a sustained amount of either. This box does exactly that, and the heat you will feel will confirm to you that without doubt, a large amount of power traversed its two terminals. The readings I tried on several batteries (one dead) seemed to confirm the status of each.

Q-TECH Battery Load Tester 100 Amp 6/12V with Metal Switch I've been abusing this load tester for three years now, and I've finally cooked it. It isn't indestructible. It will put about 80 amp load (according to my clamp on amp meter. The internal resistor (4 parallel nichrome wires) produce about .2 ohm resistances when cool but who knows when the wires start glowing red . This tester is good for 10-15 seconds of load. After that, the nichrome wires get red hot and the solder joints melt that connect the battery leads to the internal load switch. I've melted the switch contacts closed too many times and I've now melted the coppeer crimp connector to the nichrome wire. I need a new tester. 15 seconds max. or you will cook it. I've found the voltmeter and the amp meter accurate and the tester functions as needed to test alternators and battery health. I'll be ordering another one of these. I like it.

No complaints with this one. I checked both my motorcycle and car battery successfully. Diagnosed a bad motorcycle battery and a good car battery. Problem with the car was the alternator, not the battery.

Tester works as should very accurate ease of use would be a great addition to your toolbox

Very good

Ive used it alot since ive owned it trying it on every battery i have. Whether its telling me the truth or not i have no idea how to verify that it gives accurate readings but for now im just going to believe that it is.

works great

Works well. Would repurchase

Delivery was really fast and the tester is excellent. The instruction manual was clear and concise.

Does what its supposed to do

Works as advertised just right