Extra Digital Advanced NB442294 Laptop Battery for Dell Latitude 5480/5490/5580/5590, Precision 3520/3530 – 4000mAh 11.4V Li-ion, Replaces NNF1C

When the original Dell battery starts to fade, this Extra Digital Advanced NB442294 steps in with a 4000mAh / 45.6Wh lithium-ion pack that keeps up with long workdays and frequent travel. Unlike generic replacements, it uses A-grade cells and a full protection circuit, so you get stable output and a safer charge cycle every time.

Highlights

• 4-cell Li-ion design with 4000mAh / 45.6Wh capacity
• Replaces Dell part numbers NNF1C, 0NNF1C, 829MX, and 451-BBYB
• Compatible with Dell Latitude 5480, 5490, 5580, 5590, Precision 3520, and 3530
• Built-in protection against overcharge, over-discharge, overcurrent, and short circuits
• CE and RoHS certified with A-grade cells for consistent performance

In daily use

Swap out your worn-out battery and enjoy extended unplugged productivity. The Advanced battery maintains a stable power output for typical office workloads, video streaming, and software development tasks. Its black casing matches the original form factor, and the drop-in design requires no special tools. With an expected 300 to 500 charge cycles, you can count on years of reliable operation before capacity noticeably fades.

Full specifications

• Product Type: Laptop Battery
• Battery Chemistry: Lithium-Ion (Li-ion)
• Capacity: 4000 mAh
• Voltage: 11.4 V
• Energy: 45.6 Wh
• Number of Cells: 4
• Compatible Brand: DELL
• Compatible Models: Dell Latitude 5480, 5490, 5580, 5590, Precision 3520, 3530
• Replaces Part Numbers: NNF1C, 0NNF1C, 829MX, 0829MX, 451-BBYB
• Colour: Black

Final note

Backed by a 1-year manufacturer warranty, this battery is a dependable upgrade that restores your laptop’s mobility without the OEM price tag.