Nitecore D4 $19.98 on ebay good buy?

[HorizontalHunter]

This is HKJ’s review and it is spot on in my experience.

A bit over 6 hours for three KeepPower 18650’s that were about 1/2 charged.

D4 review

Conclusion

The charger does a good charging on both LiIon, LiFePO4 and NiMH.
The charge can be used for 26650 cells, but are not ideal for it, I would have liked the slots 2 mm longer, some protected 26650 are rather long.
I like the display, but it is a bit technical to look at and it only shows data for one channel at a time.

The D4 is a good universal charger and the low mode makes it better for small cells than the i4. Charging two batteries is reasonable fast, but four batteries requires some patience.