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Black rectangular lithium-ion laptop battery with label showing 48Wh 11.1V 6-Cell

FOCUSTEC

FOCUSTEC 8858X 48Wh 11.1V 6-Cell laptop battery

SKU CH-R5CP-AA004

A 48 Wh lithium-ion replacement battery rated at 11.1 V for Dell Inspiron, Latitude and Precision laptops

  • Battery TypeLithium-Ion
  • Reliable power with 48 Wh lithium-ion capacity
  • Broad Dell compatibility across Latitude, Inspiron and Precision models
  • Certified safety through CE and FCC standards
  • Long service life rated for up to 500 recharge cycles
  • Direct replacement for multiple OEM part numbers

Replacement battery for Dell Latitude and Inspiron

The FOCUSTEC 8858X is a 48Wh 11.1V lithium-ion pack built to replace original batteries in Dell Latitude E5420 E5430 E5530 E6420 E6430 E6520 E6530 and Inspiron 14R 15R 17R series laptops. It suits owners of those models who need a new power source after the factory cell has degraded. Black casing matches the original aesthetic.

Upgrade from a worn original cell

This unit replaces Dell part numbers including 8858X 04NW9 2P2MJ 312-1163 312-1164 312-1242 312-1323 312-1324 312-1325 4YRJH 911MD CWVXW DHT0W HCJWT KJ321 M1Y7N NHXVW P8TC7 P9TJ0 PRRRF RU485 T54F3 UJ499 YKF0M X57F1. The jump is worth it when runtime has dropped below useful levels or the system reports a permanent failure. It is not for users whose battery still holds a full charge or who need a higher capacity than 48Wh.

Straightforward swap with common pitfalls

Installation requires releasing the battery latch on the underside of the laptop and sliding the pack into the bay until it clicks. The six-cell form factor fits the existing compartment without modification. Common issues include failing to seat the connector fully which prevents charging and forgetting to calibrate the new cell by running a full discharge cycle. CE and FCC certification confirms baseline safety compliance.

Highlights

  • Reliable power with 48 Wh lithium-ion capacity
  • Broad Dell compatibility across Latitude, Inspiron and Precision models
  • Certified safety through CE and FCC standards
  • Long service life rated for up to 500 recharge cycles
  • Direct replacement for multiple OEM part numbers

Specifications

Battery TypeLithium-Ion

Questions about this item

Will the 11.1V 48Wh 6-cell pack fit my Dell Latitude E6420 battery bay?

Yes, the 8858X is a direct replacement for the original 6-cell battery used in Latitude E6420 and other listed models.

What is the correct way to install the battery and what step do people often miss?

Slide the pack into the bay until both locking latches click; many users forget to engage the secondary latch, leaving the battery loose.

How many recharge cycles can I expect before the 48Wh capacity drops noticeably?

The manufacturer rates the cells for up to 500 full charge cycles over the battery's life.

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