DELL 451-BBUN 62WHr 4-Cell laptop battery
- Lithium-Ion
- Notebook
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Replacement laptop battery rated 10.8 V, 5200 mAh, six cells for Dell Latitude E5420, E5430, E5520, E5530, E6420, E6430, E6440, E6520, E6530 and E6540 models
This new aftermarket battery fits Dell Latitude models E5420, E5430, E5520, E5530, E6420, E6420 XFR, E6430, E6430 ATG, E6440, E6520, E6530 and E6540. It replaces part numbers including T54FJ, NRFFP, HCJWT and 312-1163. The unit is designed for owners who need a direct replacement or a spare power source.
The 6-cell pack delivers 5200mAh at 10.8V to support extended work sessions away from mains power. Capacity is rated for full discharge cycles rather than brief peaks, so the battery maintains output through long meetings or travel. It is not intended for users who require hot-swap capability or secondary-bay expansion.
Operating at 10.8 volts across six cells, the pack conforms to the original electrical specification for the listed Latitude chassis. The fixed cell count and voltage ceiling mean the battery cannot exceed the runtime ceiling set by the laptop charging circuit. Builders needing higher capacity or a different voltage platform will not be served by this part.
Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.
| Product | |
|---|---|
| Brand name | Computer Warehouse |
| Power | |
| Battery capacity | 5,200 mAh |
It matches the factory 10.8V 6-cell design, so thermal behaviour stays the same as the original battery under identical workloads.
No, it uses the same Dell barrel connector as the original T54FJ and NRFFP packs, so your existing AC adapter plugs straight in.
Yes, the 6-cell form factor is identical across the E6420 XFR, E6430 ATG and the rest of the listed Latitude models.
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