Apc - Schneider Replacable Battery RBC48, Lead acid, Black, Maintenance-Free Lead Acid RBC48 Battery, Includes All required connectors, Battery recycling guide, Installation guide, Reusable packaging. The Replacement Battery Cartridge #48 from APC is a replacement battery pack for APC Uninterruptible Power Supplies (UPS). This non-spillable, sealed, lead acid battery is RoHS compliant and includes all the required connectors for attaching.