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4.92 out of 5
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  • 12/04/2021

    An excellent single-battery charger and analyzer. I bought it for analyzing batteries, and it does that just fine. Can charge/discharge/measure capacity of NiMh AA/AAA, or barrel-shaped Li-Ion batteries and a few more types. I used it with AAs and 18650 Li-Ion cell, worked as expected. (It did not work when I wired it to LiPo batteries though, but of course that's not in its job description.) There is an in-depth review of this charger on lygte-info website. Overall - highly recommended if you want a good AA/AAA + Li-Ion battery analyzer!

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  • 30/08/2020

    Great charger! Fits unprotected 21700 cells and has lots or charging options.

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  • 23/01/2021

    Very good

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  • 27/12/2020

    Working great. Everything is according to description

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  • 25/07/2018

    Take note: the Opus BT-C100 charger from Banggood, while can analyze/charge/discharge NiMh batteries; if you're thinking of charging Li-Ion batteries, then the product description does not indicate it supprots Li-Ion. And surely enough, my unit does not charge Li-Ion batteries (it indicates FULL immediately when I insert an 18650 or 18350 in various states of charge). See my youtube video demo of the charger: https://www.youtube.com/watch?v=Sqjfp4XEFLw https://www.youtube.com/watch?v=7hckCBD447Q

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  • 01/05/2019

    I Have only charged Li-Ion with this. Its a pulse charger. Pulses are rather high (4.310v) on old batteries with high ir . Voltage display shows battery voltage (not charging voltage) and is aprox 0.03 off on my unit. Termination voltage is aprox 4.17 (shows aprox 4.20) Voltage meter when inserting a battery is completely unreliable. Termination current 50 mA. All in all i like it for what i want it to do.

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  • 16/05/2018

    Everything you know is a small charger, battery testing and maintenance perfect. The OPUS BT-C3100 V2.2 charger, which I liked very much, is also a small brother

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  • 12/06/2019

    Good, small single cell charger. This charger came with a US plug and will do LI-Ion batteries.

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  • 15/05/2020

    Many possibilities, efficient

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  • 09/02/2019

    Ok

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