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  • 09/10/2020

    I ordered and received this Yonii D4 intelligent Charger. Charger measures voltage very accuracy for NiMH and Li-Ion. Tested with 4 1/2 multimeter. For Li-Ion with big Internal Resistance (IR) (for example 200m Ω) measures smaller voltage. Ending of charge is full automatic with precise voltage for NiMH and Li-Ion too. Do not measure Internal Resistance (m Ω), althoug is symbol mΩ ahowes after switch ON on display. Symbol mΩ for Internal Resistance is on package and User manual too. User manual do not describe operation of this charger. See on pictures in enclosure.

  • 18/09/2020

    Quite a good charger, works well on NiMh AA and AAA and also on 18650 batteries (these was tested so far, the device automatically detects the type) ) easy to use, two switch the current switch (0,5-1-2 A) and the switch for the battery slots (1-2-3-4).It displays the battery type, the charging status, the % of charging, the time elapsed and the capacity alternating on the display. Voltage of the charged battery is also displayed. With these data the faulty battery can be easily sorted. Nice pouch to transport the charger, and an usb cable is included to the charger.

  • 30/08/2020

    Quick delivery of goods in 13 days, delivery service Meest Express courier to the door. Packing the goods simply in a postal bag, the box is a bit tucked away at delivery. Good charger, functions, I can recommend for purchase.

  • 30/09/2020

    all iO, do what it should = load Li-Ion:-) Charge current 0.5 / 1 / 2A adjustable, but this must also be provided by the not supplied USB power supply. 2 cells a. 1A charge current or 4 cells a. 0.5A create most USB power supplies (I have a 3A power supply).

  • 08/10/2020

    excellent looking and high quality charger very happy with the order. it's a definite product to recommend if anyone is looking for something similar. thank you very much for this good product and God bless.

  • 14/12/2020

    Product received as expected. Good Quality product. Works fine. Really recommend this product and seller. Thank you

  • 23/08/2020

    Super handy. Each battery can be charged individually, battery or rechargeable. It indicates the amount of current injected into each and the percentage charged. The intensity of the load can be selected. Super product

  • 25/05/2021

    Fast delivery. All ok. When charging, it measures elapsed time, amps, Volts and percentage of charge. You must have a phone transformer, it doesn't have its own source. I'm happy.

  • 15/04/2021

    It's all right, it's working fine. Thank you!

  • 16/12/2020

    Good deal, just trying to charge BG batteries. You can see, that charging current is decreased to 0.5A, because batteries are close to fully charged condition.


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