Compatible Batteries: Brand New 3500mAh 40V Lithium Battery Replacement for Black and Decker 40v Battery LBX1540 LBX2040 LBX2540 LBXR36 LBXR2036. Compatible Chargers and Tools: 100% Compatible with original Black and Decker 40V tools and chargers. Works with all black decker 40v cordless tools such as LST540 LCS1240 LST136W. Same as the Original Size & Function: Built-in microchip provides multiple protections for the battery from potential damage. Safe and reliable product you can trust. Battery Advantages: Premium lithium battery cells with lightweight for better handling & less fatigue. No memory effect, virtually no self-discharge for maximum productivity & less downtime. Worry-free Service: 30-day money-back, 12 months warranty. Please feel free to reach out with any questions with this replacement black and decker 40v battery. Replacement battery for Black & Decker 40V with a powerful 40V high voltage and 3.5Ah large-capacity battery to provide your tools with strong and long-lasting power, allowing you to easily handle all kinds of heavy tasks.