We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black lithium-ion laptop battery with label showing model CI03XL

FOCUSTEC

FOCUSTEC CI03XL 46Wh or 48Wh 11.4V laptop battery

SKU CH-K8J0-4FAYW MPN CI03XL

Replacement lithium-ion battery rated at 11.4 V and 46 Wh or 48 Wh for HP ProBook 640, 645, 650 and 655 G2 and G3 notebooks

  • Battery TypeLithium-Ion
  • Reliable power for ProBook 640, 645, 650 and 655 G2/G3 models
  • 46Wh or 48Wh capacity at 11.4V supports extended work sessions
  • Lithium-ion chemistry delivers stable voltage throughout discharge cycle
  • Built-in circuit protection certified to CE and FCC safety standards
  • Replaces OEM part numbers including HSTNN-UB6Q, HSTNN-LB6T, HSTNN-PB6K and 801554-001

Replacement battery for HP ProBook 640 645 650 655

This new lithium-ion battery replaces the original CI03XL pack in HP ProBook 640 G2, 640 G3, 645 G2, 645 G3, 650 G2, 650 G3, 655 G2 and 655 G3 notebooks. It delivers 46Wh or 48Wh at 11.4V and matches part numbers including HSTNN-UB6Q, HSTNN-LB6T and 801554-001. The unit carries CE and FCC certification with built-in circuit protection.

Internal installation with built-in safety circuits

The battery fits inside the ProBook chassis and connects to the existing motherboard header; no soldering or adapter cables are required. Built-in protection guards against over-charge, over-discharge and short circuits. The main risk is ordering the wrong variant, so verify the exact part number on your old pack before fitting.

For owners of listed ProBook models needing

Suitable for users whose HP ProBook 640, 645, 650 or 655 G2 or G3 requires a 11.4V lithium-ion replacement. Not for buyers whose laptop uses a different voltage, connector layout or form factor, or who need a higher-capacity pack than 48Wh.

Highlights

  • Reliable power for ProBook 640, 645, 650 and 655 G2/G3 models
  • 46Wh or 48Wh capacity at 11.4V supports extended work sessions
  • Lithium-ion chemistry delivers stable voltage throughout discharge cycle
  • Built-in circuit protection certified to CE and FCC safety standards
  • Replaces OEM part numbers including HSTNN-UB6Q, HSTNN-LB6T, HSTNN-PB6K and 801554-001

Specifications

Battery TypeLithium-Ion

Questions about this item

How do I confirm the 11.4V CI03XL battery is charging correctly after fitting it in my ProBook 640 G3?

The laptop should show the battery icon filling, report 11.4V in the BIOS power tab, and reach 46Wh or 48Wh capacity after a full charge cycle.

What comes in the box with the CI03XL and do I need any extra screws or cables for a ProBook 650 G2?

Only the battery is supplied; it reuses the original screws and connector, so no extra parts are required for ProBook 650 G2.

Should I choose the 46Wh or 48Wh version of the CI03XL for my ProBook 655 G3?

Both capacities fit the 655 G3; pick 48Wh for longer runtime or 46Wh if it matches your original part number exactly.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.