HP GJ655AA#ABA | 6-Cell 11.1V 44Wh Li-Ion Primary Notebook Battery for 6720/6820 Series Notebook

Here are the technical specs:

- Battery type: Li-Ion
- Number of cells: 6
- Voltage: 11.1V
- Capacity: 44Wh
- Compatibility: HP 6720/6820 Series Notebook

Helpful notes:
- This battery is a primary notebook battery, meaning it is designed to replace the original battery that came with your laptop.
- With 6 cells and a capacity of 44Wh, this battery should provide a decent amount of battery life for your HP notebook.
- It's always a good idea to check the compatibility of the battery with your specific laptop model before purchasing.