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Black rectangular lithium-polymer laptop battery, model C21N1333

POWER-FENG

POWER-FENG C21N1333 38Wh 7.5V 4900mAh laptop battery

SKU CH-02JJ-M1ZJ0

38 Wh, 7.5 V lithium-polymer replacement battery for Asus TP550 and R554L series

  • Battery typeLaptop Batteries
  • Product typeBattery
  • 38 Wh capacity supports longer unplugged sessions
  • 5 V 4900 mAh lithium-polymer cell matches original specs
  • Direct replacement for Asus C21N1333 part number
  • Compatible with TP550, TP550L, TP550LA and TP550LD models
  • Also fits R554L series laptops for easy swap

POWER-FENG C21N1333 38Wh Laptop Battery

The POWER-FENG C21N1333 is a new 38Wh lithium-polymer laptop battery rated at 7.5V and 4900mAh. It serves as a direct replacement for the Asus C21N1333 part. The black pack restores mobile power to compatible notebooks. Installation follows the standard internal battery swap procedure.

Suits Asus TP550 TP550L TP550LA TP550LD R554L

This battery fits the listed Asus TP550 series and R554L models using the C21N1333 part number. It is not for buyers needing a different voltage or capacity. It is not for laptops outside the specified compatibility list. It is not for external power bank use.

38Wh 7.5V Capacity Decides Fit

The 38Wh capacity at 7.5V determines whether this unit matches the original specification. Verify the original battery label shows 38Wh and 7.5V before ordering. A different watt-hour or voltage rating means this part will not work. The 4900mAh rating corresponds to this energy level.

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

Product
Product typeBattery
Power
Battery typeLaptop Batteries

Questions about this item

How long will the 38 Wh capacity last before the battery needs recharging under sustained load?

The 38 Wh rating means the pack can deliver roughly 38 watts for one hour; actual runtime depends on the laptop's power draw and workload.

Does the 7.5 V Li-polymer pack run hotter or draw more power than the original after a full day of use?

The replacement matches the original 7.5 V specification, so heat and power draw should be comparable to the factory battery.

Which Asus models does the C21N1333 part number fit without any extra adapters?

It is listed for Asus TP550, TP550L, TP550LA, TP550LD and R554L models.

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