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Rectangular lithium-polymer laptop battery, silver-grey finish, thin profile

Estry

Estry T300LA-US51T laptop battery 7.4V 6750mAh 49.95Wh

SKU CH-K5YZ-PGFFP MPN T300LA-US51T

Lithium-polymer replacement battery delivers 7.4V and 49.95Wh for compatible Transformer Book models

  • Battery typeLithium Polymer
  • 4 V 6750 mAh capacity restores full runtime
  • 95 Wh lithium-polymer cell matches original specification
  • 53 × 165.1 × 5.23 mm form fits Transformer Book T300 series
  • 0 g weight keeps device balance unchanged
  • ISO 9001 RoHS CE UN38.3 MSDS certified for safety

Compatible laptop models

This replacement battery fits several Transformer Book models including T300LA-US51T, T300LA-DH51T, T300CHI-F1-DB, T300LA-C4007H, T300LA-BB31T and T300LA-C4001H. It also covers Transformer Book T300L, T300LA and T300 series devices. Buyers with other Asus ultrabooks or non-listed convertible models cannot use this part.

Voltage and capacity

The cell delivers 7.4V with a rated capacity of 6750mAh and 49.95Wh of energy. These three figures together determine whether the battery matches the original specification for your device. If your existing pack shows different voltage or watt-hour values this unit will not be a correct fit.

Sustained discharge protection

Built-in circuitry guards against overcharge, over-discharge, over-voltage and short-circuit conditions during extended use. The lithium-polymer chemistry and protection logic are designed to maintain stable output through long work sessions rather than only brief bursts. Certifications include ISO9001, RoHS, CE, UN38.3 and MSDS.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $86.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium Polymer

Questions about this item

How long will the 49.95Wh capacity actually run my Transformer Book T300LA?

Runtime depends on your workload; a 49.95Wh pack typically delivers several hours of mixed use but exact time varies with screen brightness, active apps and power settings.

Does the 7.4V lithium-polymer cell use a proprietary connector or a standard interface?

The battery is built to the original 0B200-00570000 and C22N1307 part numbers, so it plugs directly into the Transformer Book T300 series without adapters.

Will the 192.53 x 165.1 x 5.23mm size fit inside my T300LA-US51T chassis?

Yes, those dimensions match the factory battery for the listed Transformer Book T300 models, so it seats in the existing bay with no modification.

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