OTC 3181 130 Amp Heavy-Duty Battery Load Tester Black

item is and works as described. Well constructed. Fast shipping and delivery.

Easy to use, clamps are first class! As advertised!

Para mí se veía de buena calidad pero no pude conservarla Lo recomiendo

I have several 12 volt batteries at home. One good one that I use to jump start my lawn tractor when need be. A spare lawn tractor battery. and an old 12 volt battery with a hole in the case that allowed one cell to leak and dry up. I have all these batteries on a maintainer in my garage. So they all read over 13 volts with my meter. I have a quality Fluke multi-meter I used to first test the accuracy of the Battery load tester. The tester was right on, no need to try and zero the needle at all. I then load tested the known good battery and with the multi-meter also taking readings. Again the tester worked perfectly delivering a 130 amp load to the battery and reading an accurate voltage drop and a "good" result on the display for the battery. Waited for the tester to cool down. Can not test multiple batteries, or retest a battery too quickly or you will over heat the tester. My small tractor battery tested "good" with the load. I then tested the battery with the dry cell. I do keep this battery charged and with a multi-meter it reads and maintains 13 volts. This is the good part, under the load test the needle dropped to where the "known good" batteries did in the first several seconds, but as I counted off the 10 second test the needle dropped steadily to the "bad" range on the display. This to me was a perfect controlled experiment with an accurate result showing this Load Tester works perfectly. I feel that I can trust the results that it will give me in the future. I bought this because my power boat has 4 batteries. I noticed at the very end of last season I was having some issues with at least one of them. These batteries cost almost $200 to replace. I can now feel confident about testing each one of them and only replacing the one/ones that fail. This alone will more than pay for itself because I was prepared to replace them all just to be safe on the water. Will be testing them this weekend as I get my boat ready for the summer season.

The tester works well the analog voltage on mine is off about 1.3 volts. The unit will smoke during a load test. I would have no problem buying it again. If the voltage was perfect I would have give in 5 stars.

Durable and sturdy. I use this at work and it gets dropped and kicked across the floor.

Awesome

Great portable carbon pile tester not accurate than my electronic one does a great job of load testing battery