HP CS03XL Original Battery – Fits EliteBook 745/755/840/850 G3-G4, ZBook 15u G3-G4

The HP CS03XL Original Battery is a high-grade 11.4V 46.5Wh internal lithium-ion replacement battery engineered for HP EliteBook 745, 755, 840, 850 G3 and G4 series business laptops, as well as HP ZBook 15u G3 and G4 mobile workstations. Designed to restore dependable all-day runtime, this 3-cell battery solves common power failure symptoms including rapid battery depletion, inability to hold a charge, and sudden system shutdowns upon disconnecting the AC power adapter.

Constructed with premium grade-A lithium-ion polymer cells, the battery integrates multi-stage circuit safeguards that protect against overcharging, excessive discharge, overheating, and short circuits. Precision-molded mounting tabs and a standard connector ensure a direct fit into compatible laptop chassis without modifications. For model compatibility confirmation and disassembly instructions, refer to the official HP EliteBook 840 G3 maintenance and service guide.

This replacement battery is supplied with a store warranty included covering manufacturing defects and power retention reliability.

Key Features

• Direct Fit Replacement: Exact electrical and physical replacement for HP original part numbers CS03, CS03XL, 800231-141, and 800513-001.
• Stable 46.5Wh Capacity: Delivers long battery runtime for off-desk presentations, business travel, and uninterrupted remote work.
• Integrated Protection Circuits: Advanced onboard power management safeguards against thermal overload, over-voltage, and short-circuit conditions.
• Durable 3-Cell Construction: Quality lithium-ion polymer cells support hundreds of full recharge cycles while maintaining power capacity.
• Wide HP Model Compatibility: Powers HP EliteBook 745 G3/G4, 755 G3/G4, 840 G3/G4, 850 G3/G4, and ZBook 15u G3/G4 models.

Technical Specifications

Frequently Asked Questions

How do I know if my HP EliteBook needs a new CS03XL battery?

If your laptop operates only when plugged into the charger, turns off abruptly when unplugged, or displays an HP battery alert at startup, the battery has reached the end of its operational lifespan and requires replacement.

Is the HP CS03XL battery compatible with both G3 and G4 models?

Yes. The CS03XL battery shares the identical form factor, voltage specifications, and connector pin layout across both HP EliteBook G3 and G4 chassis.

Can I replace this battery myself at home?

Yes. Replacing the internal battery requires removing the laptop base enclosure screws, unplugging the battery connector cable, and fastening the new battery using standard Philips screwdrivers.

What warranty accompanies this replacement battery?

This replacement battery comes backed by a store warranty included covering manufacturing defects and normal charging retention.

Where can I purchase the HP CS03XL battery in Nairobi?

You can order online for delivery across Kenya or pick up directly from our retail shop at The Bazaar Plaza, Moi Avenue, 10th Floor, Wing A, Suite 1038, Nairobi CBD. Contact our team on WhatsApp at 254739238917.

Looking for other HP parts? Explore the HP SN03XL replacement battery or browse our complete laptop accessories collection.