1、Better Safety: The adapter is equipped with a fuse to prevent excessive transient currents from damaging the battery and device. 2、Easy to DIY: The adapter is equipped with a terminal block, which allows you to connect the power cord of the device to the power cord of the adapter faster and better. 3、Perfectly Compatible: This adapter is suitable for M18, 48‑11‑1860, 48‑11‑1850, 48‑11‑1840, 48‑11‑1828, 48‑11‑1820 and 48‑11‑1815 Li ion batteries. 4、Easy Installation: The adapter is easy to install, saves time and effort, locks your battery well and stably, and also easy to remove. 5、Multiple Applications: You can use this adapter to quickly and safely upgrade your RC toys, robot DIY, etc., allowing you to enjoy the fun of DIY.