Review on Biswaye 2-Pack 3.8Ah 18V NI-CD Battery - Compatible with Black & Decker HPB18-OPE 18-Volt Slide Pack Battery HPB18 244760-00 A1718 FS18FL FSB18 - for 18-Volt Firestorm Cordless Power Tools by Mark Lowery

You have a B&D 18V cordless trimmer and a 22" 18V brushcutter. Original batteries have a capacity of 2.0Ah and run out relatively quickly. It has 3.0Ah, so it packs into less Charged in a Firestorm charger for over an hour and wow they power the tools.I just cut 75 feet of very wet grass and weeded 18" deep and 4-12" tall in 10 minutes.Tough fiber growth and the battery hasn't yet once started to fall behind I forgot how well the string trimmer works btw I didn't appreciate the durability as I just received an order.