Upgrade your power backup with the APC Replacement Battery Cartridge #136. Designed for 24 V DC systems, this lead-acid battery is both spill-proof and maintenance-free, ensuring hassle-free operation. With a robust lifespan of 3 years minimum, it guarantees reliable performance when you need it most. The sleek black design seamlessly fits into your existing setup, making installation a breeze. Whether for home or office use, this battery cartridge is your go-to solution for uninterrupted power supply. Keep your devices running smoothly and confidently with APC's trusted quality!