Powerextra Makita 18v 4500mAh Brand New Replacement Rechargeable Battery for Makita BL1830 BL1815 194205-3 194309-1 LXT400 Li-ion battery, 4.5 Ah Capacity, 18V made with high quality LG 18650 cells Charging Technology Controls current, voltage & temperature to maximize battery life Sixteen firm holding contact terminals reduce the risk of power loss/fluctuation Ships in 1-2 business days. Ships from CA, United States The only Authorized Dealer of the enhanced version of Makita 1830 battery in Amazon