HP EliteBook / ZBook Green Cell Battery 3850mAh (Li-Po 11.4V) - Ref. CS03XL (Refurbished)

Description

The Green Cell 3850 mAh internal replacement battery (reference CS03XL / 800513-001) is a refurbished spare part specially selected for the refurbishment, maintenance and renovation of high-end HP EliteBook professional laptops (745 G3, 755 G3, 840 G3, 848 G3, 850 G3) as well as the HP ZBook 15u G3 mobile workstation. Intended for computer repair workshops, IT fleet management services and B2B resellers of refurbished equipment, this battery covered by a 3-month warranty restores the nominal battery life of HP enterprise machines while keeping maintenance costs under control.

Electrochemicaly, this refurbished module incorporates an assembly of 3 high-density Lithium-ion Polymer (Li-Po) cells of the Green Cell brand, delivering a capacity of 3850 mAh at a nominal voltage of 11.4V for an accumulated power of 46 Wh. This configuration provides perfectly regulated power to the motherboard and supports up to 500 complete charge and discharge cycles. The whole unit is managed by an intelligent electronic management circuit (BMS - Battery Management System) which controls the continuous regulation of the charging current. This controller protects the component and the computer against overvoltage, deep discharge, short circuits as well as the risks of thermal runaway during intensive use.

The ultra-flat external casing is structured in a heat-resistant insulating polymer, rigorously adapted to the internal footprint of HP unibody chassis. Integration is carried out directly under the bottom cover of the laptop and interfaces with the motherboard via a secure flat ribbon connector. The location of the mechanical anchor tabs faithfully respects the original assembly points to guarantee rigid attachment, avoiding any mechanical play or deformation under the keyboard.

Technical specifications

• Manufacturer reference: CS03XL / 800513-001 (Green Cell equivalents HP65 / CS03, 800231-141, 800231-271, HSTNN-DB6U, HSTNN-IB6X)
• Technology / Material: Lithium-ion Polymer (Li-Po) accumulators, rigid insulating polymer casing
• Compatibility: HP EliteBook 745 G3, 755 G3, 840 G3, 848 G3, 850 G3, HP ZBook 15u G3
• Dimensions: 198 x 103 x 8 mm
• Weight: 240 g
• Power supply / Standards: Nominal voltage 11.4V (11.55V compatible) / Capacity 3850 mAh (46 Wh) / CE, RoHS certifications
• Number of cells: 3 Li-Po cells
• Condition / Warranty: Refurbished (Refurb) / 3-month B2B warranty
• Integrated protections: BMS board with overcharge, overheat, short-circuit and deep discharge safety

Workshop Tip & Usage

Before any intervention, accurately confirm the customer computer generation: the CS03XL model is exclusively intended for G3 generation models. It is incompatible with the G2 generation (which uses CM03XL removable batteries) or the G4 generation (using the TA03XL reference). When mounting under the rear cover, be sure to unplug the old battery before loosening the locking screws. Use a plastic spudger to disconnect the connection ribbon without applying stress to the motherboard socket pins. During initial workshop commissioning, perform a full calibration cycle: charge the refurbished accumulator to 100% under mains power, then let the device discharge gradually down to 10-15% before performing an uninterrupted recharge.