Keep essential infrastructure online when the mains fail. Battery Technology RBC23-SLA23-BTI is a replacement UPS battery cartridge for APC SU1000RM2U and SUA1000RM2U systems, built to restore backup capability without forcing a full UPS replacement. For IT teams maintaining installed APC fleets, that matters: you preserve the chassis, extend service life, and avoid the cost and disruption of swapping an otherwise healthy unit. This cartridge is intended for environments where uptime is measured in business impact, not convenience. Replacing aging batteries before they fail helps maintain predictable runtime, supports orderly shutdowns, and reduces the risk of unexpected outages during maintenance windows or power events. It is a practical fit for server rooms, network closets, and edge deployments where a compact 2U UPS still protects switches, storage, and application hosts. Choose a replacement battery when the UPS platform is still right for the job, but the battery no longer is. RBC23-SLA23-BTI gives procurement and operations teams a direct path to refresh backup power while keeping the APC footprint and compatibility profile intact.