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Rectangular black lithium-polymer laptop battery with label showing 50Wh 11.1V 3-cell

FOCUSTEC

FOCUSTEC CM03 CM03XL 50Wh 11.1V 3-Cell Li-polymer laptop battery

SKU CH-50ZT-DDZ5R

A 50Wh 11.1V 3-cell Li-polymer replacement battery for HP EliteBook and ZBook G1 and G2 notebooks

  • Battery TypeLithium-Ion
  • 50 Wh capacity extends runtime on compatible HP EliteBook and ZBook models
  • 1 V lithium-polymer chemistry delivers stable power for daily workloads
  • Three-cell design balances weight and endurance for mobile professionals
  • Replaces HP CM03, CM03XL, CO06 and CO06XL part numbers across G1 and G2 series
  • Built-in overcharge, over-discharge, over-current and short-circuit protection safeguards the system

Direct Replacement Battery

The FOCUSTEC CM03 CM03XL is a new 50Wh 11.1V 3-cell lithium-polymer battery built for HP EliteBook 840, 845, 850, 855, 740, 745, 750 and 755 G1 and G2 notebooks as well as ZBook 14 G2 and 15u G2 mobile workstations. It replaces original part numbers including CO06, CO06XL, CM03050XL and the long HSTNN series. Buyers who need a higher capacity pack or a different voltage cannot use this unit.

Verify Model And Part Number

Before ordering, confirm the exact model name on the bottom case of your notebook and cross-reference the original battery part number against the supported list such as 716724-421, 717376-001, HSTNN-DB4Q or HSTNN-IB4R. The connector layout and keying must match the original exactly. Machines outside the listed EliteBook and ZBook series will not accept this battery.

Protected Cells And Safety Certifications

Premium Grade A cells deliver roughly 500 charge cycles with built-in protection against overcharge, over-discharge, over-current and short circuit. The pack carries UL, CE, FCC and RoHS certifications from recognised third-party test houses. The battery ships with an instruction manual and is covered by a 12-month manufacturer warranty.

Highlights

  • 50 Wh capacity extends runtime on compatible HP EliteBook and ZBook models
  • 1 V lithium-polymer chemistry delivers stable power for daily workloads
  • Three-cell design balances weight and endurance for mobile professionals
  • Replaces HP CM03, CM03XL, CO06 and CO06XL part numbers across G1 and G2 series
  • Built-in overcharge, over-discharge, over-current and short-circuit protection safeguards the system

Specifications

Battery TypeLithium-Ion

Questions about this item

Does the package include only the battery or any tools or cables?

You receive one CM03 CM03XL battery and an instruction manual; no tools or cables are included.

My EliteBook 840 G2 lists part number 716724-421 — is this the correct replacement?

Yes, 716724-421 appears in the compatible part-number list for this 50 Wh 11.1 V 3-cell pack.

What does the 50 Wh rating mean for daily run time on an EliteBook 840 G1?

The 50 Wh capacity typically delivers several hours of mixed use, with the manufacturer quoting about 500 charge cycles over the battery's life.

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