LXT Twin Port Rapid Charger Charges 2 x 6.0Ah batteries in 55 minutes Charges 2 x 5.0Ah batteries in 45 minutes Charges 2 x 4.0Ah batteries in 36 minutes Charges 2 x 3.0Ah batteries in 22 minutes ๐ The Makita Rapid Optimum Charger communicates with the battery’s built-in chip throughout the charging process to optimize battery life by actively controlling current, voltage and temperature ๐ 2 Built-in fans circulate air through the batteries during the charging process to cool the batteries for faster charge time ๐ Optimizes battery life by actively controlling current, voltage and temperature