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Rectangular black HP 6-cell lithium-ion laptop battery with label showing 11.1V 5200mAh

HP

HP 587706 11.1V 5200mAh 6-Cell laptop battery 121 131 221 241 251 421

SKU CH-EGBT-10WW5

11.1 V lithium-ion replacement battery with 5200 mAh capacity and six premium cells for HP 587706 part numbers 121, 131, 221, 241, 251 and 421

  • CompatibilityCompatible with HP 587706-121 587706-131 587706-221 587706-2
  • Battery TypeLithium-Ion
  • Reliable power from 5200 mAh lithium-ion capacity
  • Runs at 11.1 V for stable laptop operation
  • Six premium cells deliver extended runtime
  • Fits HP 587706-121 131 221 241 251 421 part numbers
  • CE and RoHS certified for safety compliance

Direct Replacement Battery

This 11.1V lithium-ion battery replaces HP part numbers 587706-121, 587706-131, 587706-221, 587706-241, 587706-251 and 587706-421. It delivers 5200mAh capacity across six premium cells for extended runtime. The unit is brand new and carries CE and RoHS certification.

Simple Swap Installation

The battery slots into the existing compartment without tools or cable adaptation. Alignment tabs match the original chassis so the pack seats on the first try. A common error is leaving the locking latch unclicked, which breaks the circuit and prevents charging.

5200mAh Capacity Decides Fit

The 5200mAh rating determines whether this pack meets your daily runtime target. Lower-capacity originals will see a noticeable gain, while higher-capacity expectations will not be satisfied. Buyers who need more storage than 5200mAh provides should look elsewhere.

Highlights

  • Reliable power from 5200 mAh lithium-ion capacity
  • Runs at 11.1 V for stable laptop operation
  • Six premium cells deliver extended runtime
  • Fits HP 587706-121 131 221 241 251 421 part numbers
  • CE and RoHS certified for safety compliance

Specifications

CompatibilityCompatible with HP 587706-121 587706-131 587706-221 587706-241 587706-251 587706-421
Battery TypeLithium-Ion

Questions about this item

How do I confirm the 11.1V 5200mAh 6-cell battery is working correctly after installation?

After fitting the battery, charge it fully then check the operating system's battery report or power settings to verify the design capacity reads 5200mAh and the voltage shows 11.1V, confirming the 6-cell pack is recognised.

What comes in the box with the HP 587706 replacement battery, and is any extra hardware or cable required?

The package contains the 6-cell lithium-ion battery only; no additional cables, screws or tools are supplied because the pack slots directly into the laptop's existing battery bay.

Which HP 587706 part number — 121, 131, 221, 241, 251 or 421 — should I choose for my laptop?

Match the part number printed on your original battery; this replacement is compatible with all six variants — 587706-121, 587706-131, 587706-221, 587706-241, 587706-251 and 587706-421 — so select the one that matches your old label.

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