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Rectangular 8-cell lithium-ion laptop battery, dark grey plastic casing

MSI

MSI 14.8V 4400mAh 8-Cell Battery for A6400 CR640 CX640

SKU CH-RX90-C938C

An 8-cell lithium-ion replacement battery delivering 14.8 V and 4400 mAh for compatible MSI laptops

  • Battery typeLithium-Ion
  • Compatible withCompatible with MSI A6400 CR640 CR640DX CR640MX CR640X CX640
  • High 4400mAh capacity powers extended sessions
  • 8-cell lithium-ion design delivers reliable energy
  • 8V output fits MSI A6400 CR640 CX640 series
  • CE and RoHS certified for safety compliance
  • One-year warranty backs long-term dependability

Ready power for MSI 640-series laptops

This 14.8 V lithium-ion battery delivers 4400 mAh across eight premium cells. It is built as a direct replacement for the A6400, CR640, CR640DX, CR640MX, CR640X, CX640 and CX640DX models. The unit arrives new and carries CE and RoHS certification for safety and environmental compliance.

Steady output during long sessions

The eight-cell layout spreads the load so voltage remains stable while you work through extended meetings or travel days. Lithium-ion chemistry avoids the memory effect, so partial top-ups do not reduce usable capacity over time. Built-in overload protection guards the pack during sustained draw.

Drop-in fit with certified safety

The pack matches the original chassis dimensions and connector placement, so installation requires no tools or modifications. A-grade cells and a quality printed circuit board are tested to strict standards before shipment. Eco-friendly construction excludes lead and mercury for cleaner disposal.

How it compares

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

Price $35.99
Pricier than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium-Ion
Compatibility
Compatible withCompatible with MSI A6400 CR640 CR640DX CR640MX CR640X CX640 CX640DX

Questions about this item

How much heat or power draw should I expect from the 14.8V 4400mAh 8-cell battery during all-day use?

Lithium-ion cells generate minimal heat under normal load; the pack delivers 14.8V at 4400mAh with built-in overload protection to keep temperatures stable throughout the day.

Does this battery require any proprietary connector or tool that I must already own for installation?

It uses the standard MSI battery bay interface found on the A6400, CR640 and CX640 series, so no extra cables, adapters or special tools are needed.

Will the 8-cell pack fit and charge correctly in an older CR640DX chassis that originally shipped with a 6-cell unit?

Yes — the replacement is 100% compatible with the CR640DX and other listed models, matching the 14.8V voltage and bay dimensions for proper seating and charging.

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