Krotow Addition to my previous review: NCV mode turned out as _hypersensitive_ - it react on live 220V AC wire from half meter or even more. Require to cover clamps and probe ports with hands to reduce sensitivity to acceptable level :( Besides NCV this tester works as advertised.

Krotow Adjustingof these two pieces is almost impossible. And when adjusted they dislodge or bend away soon enough. Those tweezer design have so much issues that it is not worth to count them.

Krotow Iwanted to change my review, but Banggood doesn't allow to do that. So... Actually if you want to have good SMD tweezer-like solution, either purchase proper tweezers (yes, those are very expensive) or use two soldering irons with T12, C115 or C245 tips. These tweezers use outdated heater and thermocouple ar PCB side combination (bad), needle tips (worse) and tip atjusting simply doesn't work (this drove me nuts almost every time I used these tweezers). Yihua, if you will read this - forget about Hakko 939 cloning. That soldering iron design is horribly outdated. At least upograde to pair of C115 tips, proper power supply and ask your partners in garage Aixun about how they made their T3A/T3B stations.

Krotow Because bateries was already used and had different charge levels at begin. Which cause separate current at each channel.

Krotow Itis more like that batteries are discharging through charger after charging. And batteries should not left unattended connected to charger for entire night anyway.