Beisite L19M4PG2 L19D4PG2 L19L4PG2 laptop battery

What this battery replaces

This is a new lithium-ion replacement battery rated at 51Wh with a nominal voltage of 7.68V or 7.7V. It is built for the Lenovo IdeaPad Flex 5 CB-13IML05 series and matches the black finish of the original unit. The pack is supplied as a single battery in the box. It carries a 12-month warranty from the supplier.

Check your current part number

Before ordering, locate the part number printed on your existing battery and confirm it appears in the compatible list. Accepted numbers include L19M4PG2, L19D4PG2, L19L4PG2, SB10X63137, SB10X63139, SB10X63140, 5B10X63136, 5B10X63138, 5B10X63141 and 21CP5/41/110-2. The three main model codes are interchangeable even though their voltages differ slightly, so the supplier ships whichever variant is in stock. Verify that your laptop is an IdeaPad Flex 5 CB-13IML05, CB-13IML05-82B80013MH or CB-13IML05-82B8000CUK.

Installation and system fit

The battery slots directly into the internal battery bay of the supported Flex 5 models with no extra cables or adapters required. Replacing a worn pack restores full mobile runtime and removes the need to stay tethered to an AC adapter. Buyers who need a higher capacity than 51Wh or a different voltage range will not be served by this part.