Replacement battery for Laptop. Specifications: 6000mAh, 7.2V, Li-ion. Compatible with: Laptop. Replaces: 30-43478-02, 4A-43478-02, B47-0150, CT450, CT475, Digital Equipment Corp (DEC) 30-43478-02 and 6 more. Digital Equipment Corp (DEC) replacement battery designed for Laptop devices. Tested for reliability and long service life.