Using the Makita BL1840BSC2 Starter Pack is easy. First, charge the 18V LXT Lithium-Ion 4.0Ah batteries using the included DC18SD charger. The built - in fan in the charger will help cool the battery during charging, and it'll be fully charged in about 90 minutes. You can use the L.E.D. indicator on the battery to check its charge level. When using the tools, make sure they are Star Protection - compatible (look for the Star Symbol™ and/or Yellow Battery Receiver under the tool). This will ensure that the Star Protection Computer Controls™ work to protect the tool and battery from overloading, over - discharging, and overheating. When you're done, store the batteries in a cool, dry place. They resist self - discharge, so they'll be ready for your next job even after long periods of storage. Remember, this product comes with a 3 - year limited warranty. If you're using 36V (18V X2) LXT tools, you can use two 18V LXT batteries. Keep the outer case of the battery protected as it's impact - resistant and the inner - liner is shock - absorbing. Also, don't forget that the charger communicates with the battery's chip to optimize battery life, so always use the provided charger for best results.
