Upgrade your power backup with the APC Replacement Battery Cartridge #136. This 24 V DC lead-acid battery is designed for reliability and performance, ensuring your devices stay powered during outages. Its spill-proof and maintenance-free design means you can install it with confidence, without the hassle of upkeep. With a minimum lifespan of 3 years, this black battery cartridge is perfect for both home and office use. Keep your essential equipment running smoothly and efficiently with this dependable replacement battery.