Using your Makita BL1840BSC2 Starter Pack is a breeze. First, make sure to charge the batteries using the included DC18SD charger. The built - in fan in the charger helps cool the battery and speeds up the charging process. You'll know the 18V LXT Lithium - Ion 4.0Ah battery is fully charged in about 90 minutes. The integrated L.E.D. battery charge level indicator on the battery makes it easy to see how much charge is left. When it comes to using the batteries with your tools, only use them with Star Protection tools, which are marked by the Star Symbol™ and/or a Yellow Battery Receiver under the tool. This is important because the Star Protection Computer Controls™ in the battery and tool work together to protect against overloading, over - discharging, and overheating. As for maintenance, store the batteries in a cool, dry place. Since they resist self - discharge, you don't have to worry about them losing charge quickly during storage. But it's still a good idea to give them a quick charge every few months if they're not in use. The impact - resistant outer case and shock - absorbing inner - liner of the battery protect it from damage, but try to avoid dropping or hitting it hard. And remember, this product comes with a 3 - year limited warranty, so if you have any issues, reach out to Makita for support.
