Suitable for AA, AAA, C, D.
Charge can NiCd and MiMH batteries.
Question: I don't know what is now modern batteries, and whether they are suitable for this charger?
Just the charger is old, and already snats production. Such batteries are already in the sale wouldn't see an ad.
Nothing has changed.
NiCd is very poisonous with the production of shot, hell find.
While NiMH is the most common current. Hundred years, are doing and continue to do.
And lithium batteries in the size AA or AAA not invented yet. Only lithium batteries, but they cannot be recharged.
The key point (Yes, there is nothing has changed):
The memory effect you can charge only after a full discharge.
If will charge poluraspredelenia very soon, their capacity will fall and they will be missed very long.
But treated easy to repeated discharge to zero (which, by the way, just for precaution it is recommended to do).
More modern and cool charging only differ:
1) high-speed charging, equipped with fans for cooling when charging. Charge rapidly, the battery capacity decreases. And quickly
2) Smart charging, know how to deal with the memory effect of repeated discharge-charge. But to charge such a long time.
That is plain old charge - quite a good and new batteries in size AA and AAA.