Topbatt 4Packs 18v 5.0Ah Li-Ion Battery Replacement for Makita Cordless Tool Bl1830 Bl1815 Bl1835 194205-3 Lxt-400 Made with high quality original cells.(The color will be sent by randomly, black or gray.) Safeguard features against incorrect voltage, short circuit, internal overheating. Built in memory chip communicates the usage history with the charger. High energy cells pack.Same weight and size as 3Ah or 4Ah battery. 1 year warranty