NShi TF03XL 41.9Wh 11.55V laptop battery

What this battery replaces

The NShi TF03XL is a 41.9Wh 11.55V lithium-ion replacement for HP Pavilion 14, 15 and 17 series laptops. It matches part numbers including 920070-855, 920046-121, 920046-421 and 920046-541 across the 14-BF, 15-CC, 15-CD, 15-CK and 17-AR families. Buyers who need a higher capacity pack or a different voltage should look elsewhere.

Sustained use behaviour

Rated at 3630mAh with three A-grade cells, the pack delivers steady output at 11.55V throughout a typical work session. Capacity remains consistent across repeated charge cycles because the chemistry is standard Li-ion without exotic additives. Heavy continuous loads will drain the 41.9Wh reserve faster than light browsing, but voltage sag stays within normal lithium-ion limits.

Installation notes

The battery ships with two screwdrivers and fits the existing bay without modification. Align the connector carefully; forcing it can bend the fragile pins on the motherboard header. A common mistake is forgetting to disconnect the internal cable before removing the old unit, which risks a short circuit. Follow the service manual screw sequence to avoid stripping the chassis threads.