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I tested this immediately with some batteries and a hub motor. Works nicely. It comes with a chinese+english manual but the english is kinda poor and confusing. Luckily the interface is simple enough.
Product complete. Delivery fast.
Ótimo produto para controlar consumo de eletrônicos nas baterias
Thank you very much received.
very good product
Installed in a battery box to replace the basic LED voltage meter. Haven't tested it with a load yet but on first impression, it works well and has an easily readably screen.
Received product in less than 2 weeks. Good strong packaging. Tested voltage measurements, seems ok. Have not tested shunt resistor but looks ok. Included manual is helpful.
Working very well
Exactly as it is in the descriptive, very good, would recommend.
I like this gadget. I can monitor my battery and consumption. The only problem that it shows absolut value so sometimes i do not know whether it is negative or positive...