I’m completely satisfied with the device. The fluctuation in the internal resistance value is caused by contact resistance between the cable terminals and the battery contacts. I saw online that using different cables with probes improves the stability significantly. An advantage is that it can be used on all types of batteries.
Does what it shouldEasy-to-read displayUsable on all battery types
The measured internal resistance fluctuates a lot; you need to find the optimal position of the measuring cables.
+ thick sheet metal
- the grate isn’t really a grate; it’s made only of wires spaced 2 cm apart. - first photo
the upper grilling grate is hung only on bolts and secured only with nuts, so it isn’t properly secured and often falls off. - second photo