Work with For Makita/Bosch/Dewalt/Milwaukee/Black&Decker 18V Li-ion Battery. The red wire is connected to the positive battery terminal, and the black wire is connected to the negative battery terminal. Easy to install,locks on you battery very well. Adapter has 12cm of 14 gauge wire installed Suitable for high power applications. Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement. For Dewalt Specifications: Battery Voltage:20V Item size:95x74x26mm/3.71x2.89x1.01in General Box Package Package included: 1 x Battery Adapter For Bosch: Specifications: Color: Black Battery Voltage:18 V Item size:95x74x33mm Item weight:50g Package included: 1 x Battery Adapter For Makita: Specifications: Color: Black Battery Voltage:18 V Item size:95x74x33mm Item weight:80g Package included: 1 x Bttery Adapter For Milwaukee: Specifications: Color: Black Battery Voltage: 18 V Item size: 95x74x33mm Item weight: 50g Package included: 1 x Battery Adapter For Black & Decker: Specification: Battery Voltage: 20V Item size: 8.5*6.9*2.7 cm / 3.74 x 2.28 x 1 in Item weight: 80 g Cycle Life: over 500 times Material: ABS+PC Work with for Black & Decker 20V Li-ion Battery Only. Work with for Black and Decker 20V Lithium Battery LB20 LBX20 LST220 LBXR2020-OPE LBXR20B-2 LB2X4020 Package included: 1 x Battery Connector ( Not Included Battery )