Review on Enegitech 2-Pack 18V 3.0Ah Replacement Battery For Worx Cordless Power Tools WA3127, WA3152, WG150, WG152, WG250, WG541, WG900, WG901 by Craig Edwards

I have two sets of tools from Worx that use what look like nearly identical packs. One set was yard tools (weeder, clippers, etc), the other power tools (drills, saws, etc). The charger for the yard tools is lighter and has an orange Worx logo. The heavier power tool charger has a green Worx logo, with no orange on it at all. If you crossed the packs (orange pack in green charger) it would flash either red or green, and not charge the pack. The packs themselves were interchangeable with the tools, both 18v, only the chargers cared which pack(s) they got. I suspect the orange packs were NiMh (they did not indicate on the label), and the green were NiCad. The two NiMh packs I ordered here only charge with the yard (orange) charger. So if your charger has an orange Worx logo, you want the NiMh packs. If not, you may want to specifically buy the NiCad ones instead.That said, the packs themselves are really nice. I charged them up and got a good amount of work done on the first charge. Similar to when I first bought the tools (which are all still in good condition).