CoreParts MBXDE-BA0284 laptop battery

Discover CoreParts replacement laptop battery MBXDE-BA0284: a 54 Wh Li-Polymer battery (11.4 V, 4736 mAh) designed for Dell Latitude models 5440, 3540, 5540, 5340 and 3440. Manufactured in China with quality controls and supplied with a 12‑month warranty, this battery is intended as a direct replacement to restore portable power and extend device runtime while reducing the need for full device replacement.

Advantages

This CoreParts battery provides the original-equivalent capacity of 54 Wh and a voltage rating of 11.4 V to match Dell Latitude power requirements. It is produced under controlled manufacturing processes to ensure consistent performance and longevity. Supplied with a 12‑month warranty, the battery aims to offer cost-efficient replacement, simplified installation and the potential to reduce electronic waste by extending the usable life of your laptop.

Suitable for

• Dell Latitude 5440
• Dell Latitude 3540
• Dell Latitude 5540
• Dell Latitude 5340
• Dell Latitude 3440

Key specifications

• Brand: CoreParts
• Model / MPN: MBXDE-BA0284
• Type: Li-Polymer rechargeable battery
• Capacity: 4736 mAh (54 Wh)
• Voltage: 11.4 V
• Compatible with: Dell Latitude 5440, 3540, 5540, 5340, 3440
• Origin: China
• Warranty: 12 months
• EAN: 5715063413166

How to use

Power down the laptop and disconnect any external power source. Remove the back cover or battery access panel following the laptop manufacturer’s instructions. Carefully unplug and remove the existing battery, then insert the CoreParts MBXDE-BA0284 into the connector, ensuring correct alignment. Secure the battery and reassemble the device, then charge the new battery fully before first use. If unsure, consult the Dell service manual or a qualified technician.

Recommendations

To maximize battery lifespan, perform regular charge cycles, avoid extreme temperatures, and store the battery at around 40–60% charge if not used for extended periods. Use the original or certified charger and follow Dell’s safety guidelines when replacing the battery.