De or het nikkel-cadmiumbatterij?

The correct Dutch article is:

de nikkel-cadmiumbatterij

Rule Words ending in -ij and -erij: usually de. See the rule

How to use nikkel-cadmiumbatterij

the nikkel-cadmiumbatterijde nikkel-cadmiumbatterij
this nikkel-cadmiumbatterijdeze nikkel-cadmiumbatterij
that nikkel-cadmiumbatterijdie nikkel-cadmiumbatterij
our nikkel-cadmiumbatterijonze nikkel-cadmiumbatterij
your nikkel-cadmiumbatterijjouw nikkel-cadmiumbatterij
every nikkel-cadmiumbatterijelke nikkel-cadmiumbatterij
which nikkel-cadmiumbatterij?welke nikkel-cadmiumbatterij?
a big nikkel-cadmiumbatterij / the big nikkel-cadmiumbatterijeen grote nikkel-cadmiumbatterij, de grote nikkel-cadmiumbatterij