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• All our laptop batteries are brand new with new case and new cells, we have 1 year replacement warranty on these batteries. See more details at Battery Feature.
• Please check your original laptop battery's OEM part number which is printed on your battery label, laptop model number with our postings and picture before the purchase to make sure you get the correct battery.
• Upon initial use or after a long storage period, the laptop battery may need 3 - 4 cycles of charge / discharge before achieving full capacity.
• New battery is hard to hold charge sometimes, you may need remove the laptop battery from the device and reinsert it for several times to wake up dormant cells. Occasionally, BIOS updating is required to make the battery work normally on your device.
• See more battery tips at Battery Care and Battery FAQs.

This page is about L08C3B21 TF83700068D 51J0399 51J0398 9-Cell 7200mAh Lenovo IdeaPad S9 S9e S10 S10c S10e S12 Replacement Extended Netbook Battery (Black). The laptop battery is compatible to Lenovo L08C3B21, TF83700068D, 1BTIZZZ0LV1, LB121000713-A00-088I-C-OOKO, 45K1274, 45K1275, 45K2178, 42T4590, 42T4589, 51J0399, 51J0398, L08S3B21, L08S6C21. This 9-cell black color extended battery works on Lenovo IdeaPad S9, S9e, S10, S10 20015, 4231, S10c, S10e, S10e 4068, 4187, S12 black laptop notebook computers.