Lenovo Hera SP/A L19M4PG3 3.86V 42Wh 4-Cell Laptop Battery (5B10Z26480)

When your Lenovo IdeaPad Flex 5 starts shutting down unexpectedly or won't hold a charge through a full work session, this genuine Lenovo Hera SP/A battery restores dependable power. Built to original specifications, it slots directly into the laptop's internal bay without extra cables or adapters, delivering the same 42 Wh capacity and 3.86 V output as the factory-installed unit. Whether you're presenting in a boardroom, editing documents at a café, or streaming video from the couch, the four-cell lithium-ion pack keeps you unplugged for hours.

Key specifications

• Battery chemistry: Lithium-Ion (Li-Ion)
• Voltage: 3.86 V
• Energy capacity: 42 Wh
• Estimated capacity: 10880 mAh
• Number of cells: 4-cell
• Manufacturer part number: L19M4PG3
• FRU part number: 5B10Z26480
• Colour: Black
• Installation type: Internal
• Rechargeable: Yes
• Condition: New, OEM

Why choose it

As an original Lenovo component, this battery meets strict quality and safety standards, protecting your laptop from overcharging, overheating, and premature wear. The 42 Wh capacity is identical to the original, so you get the same runtime and charging behaviour you expect from your IdeaPad Flex 5. No firmware updates or special tools are required—just remove the old battery and secure this one in place.

Ideal use cases

• Replacing a worn-out or swollen battery in a Lenovo IdeaPad Flex 5
• Keeping a spare battery for long trips or fieldwork
• Restoring full portability to a laptop that must stay plugged in
• Refurbishing a used IdeaPad Flex 5 for resale or donation

Good to know

This battery is compatible with the IdeaPad Flex 5 14ALC05, 14ARE05, 14ITL05, 15ALC05, 15ARE05, and 15ITL05 models. Always power down and disconnect the AC adapter before installation. For best longevity, avoid extreme temperatures and deep discharges when possible.