Amazon.com: BSP20PO 20V Battery Adapter for Porter-Cable 18V Power Tools, Convert for Porter Cable 20V MAX Lithium Batteries PCC685L PCC680L PCC685LP to for Porter-Cable 18V NiCd NiMh Battery PC18B PC18BL : Tools
2 x ExpertPower® 18v 3000mAh NiMh Battery for Bosch BAT025 BAT026 BAT160 BAT180 BAT181 3453-01 35618 3860K 52318B GDR 18 V GDS 18 V - - Amazon.com
Amazon.com: Biswaye 2-Pack 18V 3.8Ah HPB18-OPE Battery Replacement for Black & Decker 18V Battery, and BDFC240 Fast Charger Compatible with Black & Decker 9.6V-18V-24V NiCad NiMh Battery : Tools & Home Improvement