Battery Green Cell AS37 for ASUS R400 R500 R500V R700 K55 Series — Li-Ion 4400 mAh 10.8V, 6 cells, black

Green Cell AS37 is a replacement laptop battery compatible with Asus R400, R500, R500V, R700 and K55 series models. The battery uses Green Cell Li‑Ion cells and modern control electronics to deliver the declared capacity, stable operation and built-in protections. It is shaped to match the original battery bay and is available in black with a nominal capacity of 4400 mAh.

Advantages

The Green Cell AS37 battery combines Li‑Ion cells that resist the memory effect, a construction designed to fit specific Asus models and electronics that provide smooth communication with the laptop and standard safety protections. Cells selected by the manufacturer offer long service life and can retain capacity through many charge cycles. The housing shape and chosen materials protect internal components during everyday use.

Suitable for

• Replacing a worn or damaged battery in Asus R400, R500, R500V, R700 and K55 series laptops
• Restoring mobility for travel, meetings and remote work
• Extending run time for multimedia playback and everyday tasks

Key specifications

• Model: Green Cell AS37 (MPN: AS37)
• Compatible series: Asus R400, R500, R500V, R700, K55 (including K55A, K55VD, K55VJ, K55VM)
• Battery technology: Lithium‑Ion (Li‑Ion)
• Capacity: 4400 mAh
• Colour: Black

How to use

Turn off the laptop and disconnect the power adapter before replacing the battery. Remove the old battery according to the laptop manufacturer’s instructions, insert the Green Cell AS37 into the battery bay until it clicks into place and reconnect the power adapter. Charge the battery fully before first use to calibrate charge level reporting. Use the laptop’s power management settings to optimise runtime.

Recommendations

For longest life, avoid deep discharges and extreme temperatures; store the battery charged to about 40–60% if not used for extended periods. Recycle the replaced battery according to local regulations.