Upgraded to 3.6Ah Ni-Mh HPB18 Replacement for Balck and Decker 18 Volt Battery Compatible with Black and Decker 18V HPB18 244760-00 A1718 FS18FL FSB18 Firestorm 18 Volt Cordless Power Tools 1 Pack - - Amazon.com
BLACK & DECKER 18-Volt 10-in Straight Cordless String Trimmer with Edger Capable (Battery Included) at Lowes.com
BLACK & DECKER 18-volt 12-in Straight Cordless String Trimmer (Battery Included) at Lowes.com
Black & Decker LST522 20V MAX Li-Ion 12 in. String Trimmer Kit (2.5 Ah) New 885911450447 | eBay