The Makita BL1830 has a 5x Lower self-discharge keeps battery cells active and ready for use, even after long periods of storage.Makita BL1830 allows for charging at any time will have no effect on the batteryBuilt-in shock absorbing features on the Makita BL1830 protect the batteryThe Makita BL1830 has sixteen (16) firm holding contact terminals reduce the risk of power loss/fluctuation in high vibration work environmentsThe Makita BL1830 Battery’s built-in Memory Chip communicates with the charger to maximize battery life using 3 Active Controls (Current, Voltage & Thermal)

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More info: Makita BL1830 18V LXT Lithium-ion Battery