Going on the road and need extra runtime? Need to replace a notebook battery? This brand new, 8-cell battery for the Gateway M285-E SB Convertible Notebook can be used as a replacement for the original battery, or as a second battery for extended notebook usage when AC power is not available. This powerful, Gateway 8-cell battery replaces the following original Gateway batteries/part #s: 6501126 & 6500982 & 6501057 & 6501115 & QND1BTIZZZ0125. Don't be caught without power for your M285-E SB Convertible Notebook when you need itget charged up with this high-quality battery!