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Rectangular black laptop battery with label showing CS03XL 4035mAh 11.4V 46Wh

NShi

NShi CS03XL Laptop Battery 4035mAh 11.4V 46Wh for HP Elitebook 745 755 840 850 G3

SKU CH-8WC4-EADRT

A 46 Wh lithium-polymer replacement battery rated at 4035 mAh and 11.4 V for HP Elitebook 745, 755, 840 and 850 G3 models

  • Battery typeLithium Polymer
  • 46Wh capacity powers HP Elitebook G3 models through a full workday
  • 4035mAh lithium-polymer cells hold charge longer between recharges
  • 4V output matches original HP 800231-141 and 800513-001 specifications
  • Built-in microchip prevents over-charging, over-discharging and over-heating
  • Package includes battery and installation tools for immediate replacement

Compatible HP EliteBook models

This lithium polymer battery fits HP EliteBook 745, 755, 840 and 850 G3 notebooks. It replaces part numbers 800231-141 and 800513-001. The pack ships with a single battery and a basic tool kit for installation.

Voltage and capacity limits

The cell operates at 11.4 V and stores 4035 mAh for a total of 46 Wh. Output is fixed by the internal chemistry and the laptop’s charging controller. No higher voltage or capacity can be drawn from this form factor.

Runtime and long-term headroom

A fresh pack delivers roughly one full charge cycle for typical office workloads. Capacity will gradually decline after several hundred cycles or if the battery is stored fully charged for long periods. Professional fitting is recommended because the laptop must be fully powered down before the swap.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $41.99
Pricier than about 73% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium Polymer

Questions about this item

Which HP Elitebook models does the CS03XL 4035mAh battery fit?

The CS03XL 4035mAh 11.4V 46Wh battery fits HP Elitebook 745, 755, 840 and 850 G3 models and replaces part numbers 800231-141 and 800513-001.

What runtime can I expect from the 46Wh rating in an Elitebook 840 G3?

The 46Wh capacity restores the original factory runtime for the Elitebook 840 G3; actual hours depend on screen brightness, workload and power settings.

Does the battery use a standard HP connector and what voltage does it deliver?

Yes, it uses the standard HP internal connector for the listed G3 chassis and delivers 11.4V at 4035mAh.

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