Using your Makita BL1840BSC2 Starter Pack is easy. First, charge the 18V LXT Lithium - Ion 4.0Ah batteries using the included DC18SD charger. It takes about 90 minutes to fully charge. The built - in fan in the charger helps cool the battery for a faster charge. Once the batteries are charged, you can use them with the included 18V Li - Ion Cordless Reciprocating Saw or other compatible 18V 'bare tools' you purchase. The L.E.D. battery charge level indicator on the battery lets you know how much charge is left. When using the tools, the Star Protection Computer Controls™ will protect them from overloading, over - discharging, and overheating. Just make sure you're using Star Protection - compatible tools, which are marked with the Star Symbol™ and/or a Yellow Battery Receiver. As for maintenance, keep the batteries in a cool, dry place when not in use. The impact - resistant outer case and shock - absorbing inner - liner of the battery protect it, but still handle it with care. The charger should also be stored in a safe place. This product comes with a 3 - year limited warranty, so if you have any problems, you can reach out to the support team.
