and look at the information printed on the battery/motor part. If it says "For use only with charger UA210010B" then you should buy this charger. If it says "For use only with charger ETPCA-P180021U3" then this charger will not work for you (I have two but I can sell you!) I currently have three vacuums, two of which are of this model, but each one does uses a different charger. The first one I bought (it came with a large charger) stopped working, so Black and Decker sent me a new DustBuster. The new one had a larger charger, but the DustBuster itself needed a smaller one. So they sent me a third DustBuster, a completely different DustBuster model with a completely different charger. They told me to throw away both the first and second DustBuster. But since the second one worked perfectly (only the charger was missing), I bought it and now it works great.