APC Replacement Battery Cartridge #11 has Hot-swappable batteries and Plug-and-Play installation.

• Keeps your UPS up and ready for use at all times
• The battery can be mounted in virtually any position and has low self-discharge
• In terms of cost per watt hours, it is an inexpensive choice providing efficient power
• 12 V DC battery can be used as a convenient spare, giving you peace of mind