Tutorial for removing and replacing the Replacement Battery Cartridge (RBC) in an APC SUA Series 2U Rack Mount Smart-UPS. Please note that while you do not have to power down the UPS, you will not have any battery back up protection for the short period when no batteries are installed in the UPS. To learn more, please visit the APC by Schneider Electric FAQ: http://www.apc.com/us/en/faqs/FA156520/
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