Did your Rowenta cordless vacuum charger stop working? Don't buy a whole new vacuum! This Kircuit replacement AC adapter is designed to power and charge your Rowenta Delta Force 18V stick vacuum. It's been tested and validated to work just like the original. It's compatible with a ton of models, including the RS-RH4901 and many in the RH854XXX and RH855XXX series (like the RH8552, RH8553, RH8548). It also matches the original part numbers SSA-10W US 290020 and MOSO MSP-C0200IC29.0-9W-US. Please check the long list of compatible models in the description and compare it to the label on your old charger or vacuum to be 100% sure. This adapter converts your wall outlet power to the DC power your vacuum needs to run and charge its battery. It's a portable solution to get your cleaning buddy back in action. A simple, cost-effective fix instead of replacing the entire appliance.