convenient and affordable 1 1

The negatives first:
its rather large and thick format. I use a lot of batteries for photo breaks and when only a small backpack it quickly becomes cumbersome bag.
its loading time during the first use. The first load far exceed 4h indicated (just over 5 hours for AA and a little over 7 hours for AAA home) but this reduced as and uses.
the establishment by means of the not always obvious AAA batteries

Positives:
adaptability. It can charge simultaneously 2 AA and 2 AAA batteries or 4 batteries of the same type
Affordable price for a starter kit with charger and two AA batteries + 2 AAA batteries
usability
the two load control lights (one for both batteries) to enjoy even when loading batteries if all did not charge the same rate

A practical product has a good value for a quality brand!