Replacement battery HP SE03XL 3615mAh

Is your HP laptop (HP Pavilion 14-AL, TPN-Q171, ~2016-2018) no longer holding a charge or shutting off without the charger? This SE03XL replacement battery rated 3615mAh fits 1-to-1 in the same bay. No BIOS flash or special tools — just open it up, unplug the cable and swap.

Specifications

• Capacity: 3615mAh
• OEM reference: SE03XL
• Li-ion 11.4V (3-cell) unless otherwise noted
• Compatible: HP Pavilion 14-AL, TPN-Q171, 14-AL027TX, 14-AL127TX
• Built-in overcharge protection circuit
• 1-to-1 replacement — same connector and mounting

Symptoms of a faulty part

• Laptop shuts off the moment you unplug the charger
• Battery percentage jumps around or stays at 0%
• Charge lasts only minutes instead of hours
• Windows shows 'consider replacing your battery'
• Battery gets hot or visibly swells up

Installation

🟡 Difficulty: medium. Time: about 25 minutes. Tools: Phillips PH0/PH1 and possibly T6 Torx, plastic spudger. Open the bottom panel, disconnect the battery cable, remove screws, swap battery and follow the same cable route.

Frequently asked questions

Does this battery fit other HP models?
It's made for HP Pavilion 14-AL, TPN-Q171, 14-AL027TX, 14-AL127TX. Other lines use a different connector.

Do I need to reset my BIOS or recalibrate?
No. Charge it fully once and then use as normal — Windows reads the SOC by itself.

What's the difference from a genuine HP battery?
Same cell chemistry and the same SE03XL designation. Cells come from A-grade suppliers, no branded packaging.