Adapter Converter Feature: 18v battery adapter suit for 18V Ni-Cad&NiMh power tools 5026DB, 5036DB, 5036DWFE, 6343D, 6343DWDE, 6391D, 8391DWAE, 8391DWPE3, 8443DWFE.Adapter Function: If you have 18V lithium battery & 18V NiCad or NiMh Power Tools. The adapter convert 18V lithium battery to 18V NiCad & NiMh battery. So you can use 18V Ni-Cad/NiMh Power Tools.Perfect Compatible: Use for 18 volt LXT batteries in any 18V NiCad & NiMh tools. Compatible with 18V lithium battery BL1830 BL1850 BL1850 BL1840 BL1820 BL1860 BL1815N BL1430 BL1445. Replace old 18V Ni-Cad batteries 1822 1823 1833 1834 1835 1835F 192828-1 192829-9 193061-8.NOTE: This for 18 volt adapter no need to be charged (Please remove on adapter before charging battery), 18v lithium battery compatible with 18v lithium battery charger.Maximum initial battery voltage(measured without a workload) is 20volts,Nominal voltage is 18voltsCompatible with:for 18 Volt Slide Style Lithium Battery BL1830B BL1850B BL1850 BL1840B BL1820B BL1860B BL1820 BL1830 BL1815N BL1840 BL1815 BL1430 BL1445Replacement All 18V Nicad/NIMH Battery:for 18 Volt Plug in Pod Style Battery 1822, 1823, 1833, 1834, 1835, 1835/F, 1835F.for 18 Volt Plug in Pod Style Battery 19159-1, 192828-1, 192829-9, 193061-8, 193102-0, 193140-2, 193151-1, 193783-0, 194205-3, 194230-4, 194309-1, 196673-6, 419276-2.Color: BlackMaterial: plasticSize: 13*9.5*10cmPackage Contents:2 * MT20MN Battery Converter AdapterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.