About Cellularmega: (1)Cellularmega is specialized in manufacturing power tool batteries. (2)Cellularmega products are made with the highest quality materials.Our products are CE certified, tested by manufacturer to match and/or exceed specifications of OEM products. (3)Cellularmega focus on providing high quality power products and excellent customer service,Looking forward to your support and your positive affirmation. Advantage: This Battery is Designed for Makita BL1850 BL1840 BL1830 BL1820 BL1815 LXT-400 194204-5,It is a kind of Lithium-Ion battery,you can carry it anywhere anytime, convenient to use.And it's has no memory effect. Can be charged or discharged as needed without loss of capacity.The functions are the same as the original products Uses the highest quality cells, safe with rapid-charge technology while providing overcharge and over discharge protection to increase the life of the battery Products Details: Cordless Drill Battery for Makita BL1850 18V 5.0Ah Lithium-ion All items are 100% Brand New in Original Condition guarantee. Battery Type: A Brand New Li-Ion Rechargeable Battery Battery Voltage : 18V Battery Capacity : 5000mAh Battery Color : Black Compatibility MAKITA 194204-5 194205-3 194309-1 BL1815 BL1830 BL1835 LXT400 Fit models for makita BCF201 BCF201Z BCL180 BCL180F BCL180W BCL180Z BCL180 ZW BCL182 BCL182Z BCS550 BCS550F BCS550RFE BCS550Z BDA350 BDA350F BDA350RFE BDA350Z BDA351 BDA351RFE BDA351Z BDF450 BDF451 BDF451RFE BDF451Z BDF452 BDF452RFE BDF452RHE BDF452SHE BDF452Z BDF453RHE BDF453SHE BDF453Z BDF454F BDF454RFE BDF454Z BDF456RFE BDF456Z BFR550F BFR550L BFR550RFE BFR550Z BFR750 BFR750F BFR750L BFR750RFE BFR750Z BFS450 BFS450F BFS450RFE BFS450Z BFS451RFE BFS451Z BGA402RFE BGA402Z BGA452 BGA452F BGA452RFE BGA452Z BGD800 BGD800RFE BGD800Z BGD801 BGD801RFE BGD801Z BHP450 BHP451 BHP451RFE BHP451SFE BHP451Z BHP452 BHP452HW BHP452RFE Battery Maintenance: 1.Always remove battery pack from your tool when you are assembling parts,making adjustments,cleaning,or when not being used for an extended time. 2.If you don't plan on using the Power Tool Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage; remember to recharge the batteries before use. 3.Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. Warranty: Cellularmega is committed to providing each customer with satisfactory products and customer service. All the Cellularmega products are covered by 30 days money back guarantee and 12 month warranty from cellularmega.hk