Attach with For 18V 20V battery, Modified Sine Wave inverter working faster, quieter and more stable. Also it could be a portable power supply for outdoor activity, like camping, hiking and fishing. There is power bank & camping gear,at the same time to satisfy your outdoor needs.Very practical for outdoor. it for electrical maintenance, and outdoor camping ,Just a portable power inverter station by 18 volt batteries for camping, hiking, traveling and so on. Great gadget for outdoor power solution, super . , Compact design, very convenient for indoor and outdoor using. [Multifunctional USB Ports and DC Sockets] - Multiple devices can be used, one for multiple purposes. [Compatibility For Battery] - The power inverter for 18V lithum battery. Such as 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1840, 48-11-1850, 48-11-1860 etc. (Battery is NOT included) Type:DC-AC Inverter Input voltage:18-28VDC Output voltage:110/220V Frequency:50Hz 2 x USB+1 x QC3.0 Protect:Overheating/overload protection Notes: Due to different production batches, there are slight differences between the actual product and the picture, which not affect normal use. This inverter 18V to 220V does not include any batteries, it is just a bare tool. If it is not in use, remove the inverter from your battery, or it drain the battery. Colour:Red Material:Plastic Package Contents: 1 * Inverter (battery not included) Only the above package content, other products are not included. Note: Light reflection 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.