Review on Biswaye 2-Pack 4.0Ah 20V Lithium Battery LBXR20 Compatible With Black And Decker 20V MAX Battery LBXR2520 LBXR2020 LB2X3020 LBX20 LB2X4020 LBX4020 And LST522 LHT2220 LST300 20V Max Tools by David Gill

I have had B&D 18V tools and yard equipment for about 20 years. Their tools are great, but their batteries are junk. This Biswaye 20V battery lasts longer per charge than any B&D battery I have ever had. You need to buy the Biswaye adapter to use these batteries with the 18V tools. I assume these 20V batteries will last many years because of their Lithium cells. The NiCad batteries from B&D only last a year to two with light use. If any of these batteries ( I bought 3) fail sooner, I will update this review.