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Rectangular black laptop battery with connector strip

GreenTechLLC

GreenTechLLC RC30-0357 laptop battery 11.55V 55Whr for Razer Book 13 2020 2021

SKU CH-52DG-6Z0KX

Replacement 11.55 V 55 Whr three-cell lithium-ion battery for Razer Book 13 2020 and 2021 models

  • ColorBlack
  • TypeBattery
  • CompatibilityRAZER BOOK 13 TOUCH 2020, BOOK 13 2020, BOOK 13 2021, RZ09-0
  • Battery Type3 Cell Lithium-Ion
  • Battery Voltage11.55V
  • Battery Capacity4762MAH
  • Replaces OEM RC30-0357 for a direct fit
  • 55V 55Whr capacity restores original runtime
  • 3-cell lithium-ion design keeps weight low
  • Tested for stable voltage and circuit protection
  • CE FCC RoHS certified for safe operation

GreenTech RC30-0357 55Whr replacement battery

This new GreenTech RC30-0357 battery replaces the original RC30-0357 pack in Razer Book 13 models from 2020 and 2021. It is a 3-cell lithium-ion unit rated at 11.55V and 4762mAh for 55Whr capacity. The black pack is built for owners of compatible Razer Book 13 FHD and Touch variants who need a direct voltage match.

Tested safety certifications and circuit protection

Each unit is tested for correct voltage, stable current, low self-discharge and circuit protection before shipping. The pack carries CE, FCC and RoHS certifications, confirming compliance with recognised safety and environmental standards. These verifications replace the guesswork of untested third-party cells and reduce the risk of swelling or sudden shutdown. Buyers who require an OEM-branded battery with the original manufacturer warranty will not be served by this compatible part.

Straightforward internal swap with basic tools

Installation follows the standard Razer Book 13 disassembly: remove the bottom case screws, disconnect the old pack and connect the new one using the existing cable. No soldering or firmware flashing is required. The main difficulty is the adhesive securing the original battery; excessive force can puncture cells or damage the trackpad ribbon. Patience and a plastic spudger avoid the most common repair error.

Highlights

  • Replaces OEM RC30-0357 for a direct fit
  • 55V 55Whr capacity restores original runtime
  • 3-cell lithium-ion design keeps weight low
  • Tested for stable voltage and circuit protection
  • CE FCC RoHS certified for safe operation

Specifications

BrandGreenTech
ModelRC30-0357
Part NumberRC30-0357
ColorBlack
TypeBattery
CompatibilityRAZER BOOK 13 TOUCH 2020, BOOK 13 2020, BOOK 13 2021, RZ09-0357, BOOK 13 RZ09-0357 2020, BOOK 13 RZ09-0357 2021, BOOK 13 FHD
Battery Type3 Cell Lithium-Ion
Battery Voltage11.55V
Battery Capacity4762MAH

Questions about this item

How long will the 3-cell lithium-ion RC30-0357 last before it needs replacing?

The pack is rated at 55 Whr and 4762 mAh; under normal daily charge cycles it typically provides several years of service before capacity falls to a level that warrants a swap

What stops the RC30-0357 from running longer on a single charge during heavy workloads?

The 55 Whr energy capacity is the hard limit; once the 4762 mAh cells are depleted the laptop must be plugged in regardless of load intensity

Does the RC30-0357 get hot or noisy when the Razer Book 13 runs all day?

The battery itself has no moving parts and generates only modest warmth during discharge; any fan noise or heat comes from the laptop's own cooling system

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