About this item 【HPA1820 Adapter】Fit for porter cable& for black and decker& for stanley 20v lithium battery converted to 18v battery after using the adapter compatible with black&decker 18v cordless power tools. Instantly turned all your old 18V tools into 20V tools while getting rid of all that weight and bulk of the old battery. 【Broad Match】For Black and Decker 20v Lithium Batteries lbxr20 lb2x4020 lb20 lbx20 lbxr20-ope lb2x4020-ope Converted to B&D 18v Batteries NiCd NiMh hpb18 hpb18-ope. For Porter Cable 20v lithium batteries. 【Old Tools Back to Life】The adapter and 20 volt batteries work very well in electric drills, blower, edgers and hedge trimmers where the battery hangs out the bottom of the device. 【Fits and Works Perfectly】Easy to snap in and out and the adapter slid in and out of the tool's battery slot with ease. The adapter fits into the tool the same way the 18v batteries do, sliding easily. 【NOTE】Remember that the 20-volt battery must be detached from the adapter and charged using its own charger. You cannot charge the combination with the original 18-volt charger. Fit Model: For Black and Decker 20V Lithium Battery LBXR20, LBXR20-OPE, LB20, LBX20, LBX4020, LB2X4020, LBXR2020-OPE, LB2X3020-OPE, LBXR20BT For Porter Cable 20V Lithium Battery PCC685L, PCC680L, PCC682L, PCC681L, PCC600 For Stanley 20V Lithium Battery FMC680L This works perfectly as adapter for Black Decker 18V tools which lasts and greatly improves performance of any device, not applicable to other brand tools. For Black & Decker 18V Power Tool : FS1800CS, FS1800D, FS1800D-2, FS1800ID, FS1800JS, FS1800RS, FS1800S, FS1802D, FS1802S, FS1806CSL, FS18CS, FS18HV, FS18ID, FS18PS, FS18PSK, FS18RS, FSL18, FSX1800HD, FSX18HD Note: Only compatible with Black and decker 18V tools, Not compatible with Porter-Cable 18V tools. This converter is not a charger. Can't charge battery with this adapter. Please remove this adapter before charging battery. Adapter with two prongs, fit for black and decker 18 volt batteries with two or three prongs.