18V 3.8Ah FSB18 HPB18 battery replacement for Black Decker Firestorm (
4X4.5Ah For Black Decker 18v battery HPB18 HPB18-OPE2 Firestorm 244760-00 FS18BX | eBay
Powerextra 2-Pack 3000mAh 18V Replacement Battery for Black & Decker HPB18 HPB18-OPE 244760-00 A1718 FS18FL FSB18 Firestorm Black and Decker 18 Volt Batteries - Walmart.com