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The default settings of the Opus battery analyser seem to work OK to charge and test NimH and Li-ion cells, and the display shows the battery capacity. Refresh mode does 3 charge/discharge cycles to restore the capacity of cells which have been flat for a long time. The unit detects the voltage of the cell to decide which type it is. I found a potential problem with completely dead cells, because the unit wasn't able to detect the presence of the cell. The solution is to put the cell in a conventional charger for a few minutes go get a "normal" voltage into it, then the Opus can do its thing. A great product.
Verified purchase: Yes | Condition: New
I happily used this charger with 18650 batteries for several days, but in the last few days, the fan has started making such noise that I cannot be in the same room as the charger. I will need to contact the seller about this. I imagine the fan can be changed, but for something brand new, i'm a bit disappointed. Other than that, great machine.
Verified purchase: Yes | Condition: New
Decided to purchase this after watching countless video reviews on YouTube about it, loads of functionality and the ability to set different parameters for each bay is brilliant.. Battery capacitance tester is particularly useful when processing 18650 battery, I only hope it will be reliable.
Verified purchase: Yes | Condition: New
Great charger. Loads of different features, prefect for my project. In addition to charging cells it can also display the internal resistance and available capacity of the cell. The recovery feature is also great for bringing poor cell back to good working order. Arrived quickly and in great packaging.
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New