Well, I received my second u1252b two days ago. The first was Keysight brand, I bought it six months ago, and the "new" is Agilent. The seller has warned me about it. Calibration certificate (of course) is from 2012, FW 217. Surely, the battery lost its original capacity, the time for full charging was only 20 min. Absolutely natural inevitable degradation. Everything is normal here. After initial switching on I saw some glare and several (normally inactive) segments on the display. I thought that my device, or at least the display, is dead. Fortunately this abnormality gradually disappeared after 10-15 min of working. LCD displays also degrade when not working for many time, but this is reversible. In any case, I hope so. We will see. Oh yeah, the rotary switch! It is wery tight. Certainly for the strong men. It is necessary to hold the device with both hands to switch it! Maybe I need to grease it?... Okay, okay, I'm joking. As regards the accuracy, needs some time to draw conclusions. Perhaps, I send it for calibration (€60).