I would note in this review and in particular a shortage of this equipment, which was mW even mentioned in any other review I have the meter used twice over a period of several months, without extracting it, and noticed in both measurements that the elapsed time is not displayed correctly: The first measurement was about 4 months, but the device showed me less than 100 days to maturity (the exact data had I not listed). In the second measurement me now only 38-day period are displayed according to actual elapsed 238 days on the device. I conclude that the device is not apparently able to display a duration> 99 days on the display! So if you want to carry out measurements over a period of more than 99 days, you should write down the start date somewhere!
Other disadvantages of the device that are mentioned in other reviews: - The display is unlit. - All data is lost when you pull the unit from the wall outlet.
By measuring the current per se but I am satisfied, the values seem to agree (even over a longer period of 8 months).
