Better security: The adapter is equipped with a fuse and high-quality cable to prevent excessive transient current from damaging the battery and equipment. This battery adapter/cover has been tested to work for 20V Max Li-ion batteries. Perfectly compatible : work with for 20V /18V DCB206 Li-ion batteries. Made of high quality material,durable and safety to use. Adapter has 14 gauge wire installed,ready for high power applications. Easy to install ,locks on you battery very well. Portable design,convenient to carry and easy to use. Product Name: Battery Adapter with Fuse Compatible: For 18V/20V maximum battery to DIY 2 wiring/cable output Cable specification: 12 AW Colour:A: yellow Material:plastic Package Contents: 1 x Battery adapter with built-in switch (Not include battery) 3 x 30A replacement fuses Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.