Battery MITSU BTY-M6K MS-17B4 11.4V 4300mAh (49Wh) for MSI laptops

Rechargeable laptop battery MITSU BTY-M6K MS-17B4 delivers 11.4V nominal voltage and 4300mAh (49Wh) capacity for compatible MSI laptops. This Li‑ion replacement battery is intended as a direct swap-in to restore portable power for everyday mobile use, short-term unplugged operation and simple field replacement when the original battery no longer holds sufficient charge.

Advantages

The MITSU BTY-M6K MS-17B4 uses lithium‑ion chemistry to provide a balance of energy density and weight at the specified 11.4V and 4300mAh rating. It is designed to be OEM-compatible in form and function with select MSI laptop models, offering straightforward installation and immediate restoration of battery runtime without requiring system modifications. The battery’s 49Wh energy capacity supports typical productivity and multimedia tasks during short periods away from mains power.

Suitable for

When it may not be suitable

This battery is specified at 11.4V and 4300mAh (49Wh) and is intended as a direct replacement for compatible laptop models. It may not be suitable for systems that require a higher-capacity or higher-voltage pack, for extended off-grid use where larger battery capacity is needed, or for laptops with incompatible battery shapes, connectors or firmware restrictions.

Key specifications

How to use

Power down the laptop and disconnect the mains adapter before beginning replacement. Remove the existing battery following the laptop manufacturer’s service instructions or the user manual for your specific MSI model. Install the MITSU BTY-M6K MS-17B4 in the battery bay, ensuring proper seating and connector alignment, then secure any retaining screws or latches. Reconnect the mains adapter and allow the battery to charge fully before first use to help calibrate charge reporting.

What to consider before purchase

Recommendations

For reliable operation, use the laptop with up-to-date power management settings and keep the battery within recommended temperature ranges during charging and storage. Store the battery partially charged for long periods and recharge periodically to preserve capacity.