NShi VS03XL 11.55V 52Wh 3-cell laptop battery

Replacement Battery for HP Envy 15-AS Series

This 3-cell lithium polymer battery replaces the original VS03XL unit in compatible HP Envy 15-AS and 15T-AS laptops. It delivers 11.55V and 52Wh capacity to restore mobility for users whose factory pack no longer holds a charge. The black pack ships with two screwdrivers to simplify the swap. It is not for owners of other HP chassis or non-Envy models.

Voltage and Capacity Match

The single specification that decides fit is the 11.55V 52Wh rating, which must match the original battery label exactly. Cross-reference the part numbers 849313-850, 849047-541, HSTNN-UB6Y or TPN-I125 before ordering. A different voltage or watt-hour value will prevent the laptop from recognising the pack. Buyers who need a higher capacity option cannot use this unit.

Thermal Behaviour in Daily Use

Lithium polymer chemistry runs cooler than older cylindrical cells under typical office loads such as browsing or document editing. The pack draws modest current during normal operation, so fan noise remains unchanged from the original battery. No external charger is required; the laptop manages charge cycles internally. Users who demand sustained high-drain performance should verify thermal limits with the system manufacturer.