Replacement Battery for Lenovo IdeaPad U450A, U450P 20031, U450P 3389, U550, 57Y6309 (10pc)

Replacement Battery for Lenovo IdeaPad U450A, U450P 20031, U450P 3389, U550, 57Y6309 (10pc)4400mAh Battery for Lenovo IdeaPad U450A, IdeaPad U450P, IdeaPad U450, IdeaPad U550, IdeaPad U550A. Specifications: Attention: For the new battery, we suggest all of our customers fully charge it by AC power adapter. Maybe it take a long period, the capacity was strain out by inner PCB circuit. In order to protect your battery life, you can fully charge it to 100% and drain to 2% ,it's a cycle and the capacity will recover. it's better to make normal

4400mAh Battery for Lenovo IdeaPad U450A, IdeaPad U450P, IdeaPad U450, IdeaPad U550, IdeaPad U550A.

Specifications:

• Attention: For the new battery, we suggest all of our customers fully charge it by AC power adapter. Maybe it take a long period, the capacity was strain out by inner PCB circuit. In order to protect your battery life, you can fully charge it to 100% and drain to 2% ,it's a cycle and the capacity will recover. it's better to make normal use after 2 cycles and charge the battery regularly at least once a month.
• Battery Type: Li-ion Voltage: 14.8V; Capacity: 4400mAh; Cells: 8-cell Color: Black;
• 100% Brand New Cells. Rechargeable Up to 500 cycls over life of battery; High energy efficiency and extended battery life.

Compatible with the following models:
IdeaPad U450A, U450P, U550, U550A

Compatible with the following part numbers:
L09S8D21
L09L8D21
L09L4B21
L09S4B21

Note: Not all P/N & compatible models are listed here.