We are well aware that professional work requires professional tools. Therefore, every Obsidian product has undergone rigorous durability and performance tests to ensure stable performance even in high-intensity working environments. At the same time, we offer customers a choice that combines international quality with high value for money.
Last month, the car suddenly wouldn't start due to a drop in temperature. I thought it was the battery that had failed and almost called for a tow truck to replace the battery with a new one. Fortunately, a friend brought this tester to measure it. The operation was very simple. Just secure the positive and negative terminals with the clips, and within a few seconds, the result was obtained: the actual measured value of CCA (cold start current) was 289A, the rated value was 500A, the internal resistance was 9.6mΩ, and the result indicated 'needs charging - repairable'. I used a charger to charge it slowly for the whole night, and it started working properly when reinstalled. I saved a lot of money. The health analysis of this device is not simply saying 'good/bad', but provides the SOH (life state) percentage and charging suggestions. Now I have developed the habit of testing the generator's starting voltage before long trips, and I feel at ease. For car owners who don't want to be fooled by repair shops into replacing batteries, this is truly a great product.
