Black And Decker 40V Max Lithium Battery Upgraded 3500Mah 40V Lbxr36 Battery ??FEATURES?40-Volt MAX Battery Type: Lithium ion battery, 3500mAh Capacity. Replacement for 40v Black and Decker Max battery LBX2040, LBXR36, LBXR2036, LBX1540, LBX2540, Work with Black and Decker 36v 40v Max string trimmer/lawm/weed eater/blower tool battery. ??Perfectly Compatible?Compatible with multiple Black Decker 36 volt and 40 volt Max outdoor power tools LHT2240CFF, LCS1240B, LST136B, LCC140, LCC340C, LSWV36, LST140C, LSW40C, LSW36, LHT341FF, LST540B and etc, And Black and Decker 40v Max battery fast charger LCS36, LCS40. ??Advantages?3500mAh high capacity, this LBX2040 40v Lithium Ion battery features longer runtime and improved performance. Integrated LED battery charge level indicator allows user to monitor battery using. ??Safe Reliable?Advanced Li-ion technology provides improved energy density. CE, FCC, RoHS Certified. Built-in integrated microchip prevents overcharging and other malfunction to prolong battery life. No memory effect, can be charged or discharged as needed without loss of capacity ??Support Service?30-Days Money Back and 12 Months Warranty! Please feel free to contact us if you have any concern about this item. We will try our best to promise you have an enjoyable shopping experience. Welcome to share your feelings with us.