Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great battery replacement

The DeWalt products work great. However, a note of caution. I bought this battery to replace ailing Firestorm batteries, as I have the whole 14.4V firestorm pack. An earlier poster stated that this battery will work with the black and decker products. Not so. It works if you hold it on, but the battery doesn't clip into the unit. Pretty useless. I ended up purchasing the DeWalt drill pack. At least I can still use my other firestorm products with these new batteries, though I will have to hold them in to run. Oh well.