600W, 1000W power supplies charge secondary batteries

TDK-LAMBDA HWS-L/BAT series of industrial grade 600W and 1000W power supplies charge secondary batteries (e.g., Lithium Ion, Lead Acid, etc.) that are employed in emergency power backup systems. Products can also be used in applications that require a constant current source such as UPS battery charging, wastewater treatment, electrolysis, etc. Units suit small to medium emergency backup systems that use rechargeable batteries with a nominal voltage of 24V or 48Vdc.

http://www.us.tdk-lambda.com/lp