We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black lithium-ion laptop battery with six cells

KingSener

KingSener RC30-0270 laptop battery 4221mAh 65WH 15.4V 6-cell for Razer Blade 15 Base Stealth 2018

SKU CH-D80S-HHM8R MPN RC30-0270

6-cell 15.4 V lithium-ion replacement battery rated 4221 mAh and 65 Wh for Razer Blade 15 Base Stealth 2018 models

  • Battery typeLithium-Ion
  • Battery voltage rating15.4 V
  • Product colorBlack
  • Product typeBattery
  • Compatible with4,221 mAh/65WH
  • 65Wh capacity supports longer unplugged sessions
  • 4V lithium-ion chemistry matches original power profile
  • Six-cell design delivers stable output for daily workloads
  • Direct fit for Razer Blade 15 Base Stealth 2018 models
  • 4221mAh rating restores factory runtime levels

Direct replacement for Razer Blade 15 Base Stealth

This KingSener RC30-0270 battery is built for the Razer Blade 15 Base Stealth 2018 series. It matches the original 15.4 V, 4221 mAh, 65 Wh specification in a six-cell lithium-ion pack. The black finish aligns with the chassis aesthetics. Buyers needing a different voltage, capacity or form factor should look elsewhere.

Fits the existing battery bay without modification

The pack slides into the factory battery compartment and connects to the stock motherboard header. No adapter cables, firmware updates or BIOS changes are required. The 15.4 V output powers the platform directly, freeing the user from a tethered charger. Systems with a different connector pinout or voltage rail will not accept this unit.

Restores runtime lost to an aged original cell

Replacing a depleted factory battery with this new 65 Wh unit returns the notebook to its designed mobile endurance. The swap is worthwhile when the old pack no longer holds a useful charge or triggers unexpected shutdowns. If the laptop suffers from a faulty charging circuit or motherboard power delivery, a fresh battery alone will not resolve the issue.

How it compares

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

Price $36.99
Pricier than about 66% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingsener
Model nameRC30-0270
Part numberRC30-0270
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating15.4 V
Compatibility
Compatible with4,221 mAh/65WH

Questions about this item

How long will the 65 Wh capacity last before the voltage drops under continuous load?

The 65 Wh rating is measured at the nominal 15.4 V; actual runtime depends on the laptop's power draw, so sustained heavy use will deplete the 4221 mAh cells faster than light workloads.

Does the six-cell lithium-ion pack run hot or make noise during all-day operation?

The battery itself has no moving parts and generates only modest heat during charge or discharge; any fan noise comes from the Razer Blade 15 chassis, not from the RC30-0270 pack.

Which original part numbers must match for this replacement to fit my Razer Blade 15 Base Stealth 2018?

The RC30-0270 replaces Razer part numbers RZ09-03006, RZ09-0270 and RZ09-02705E75-R3U1; verify one of those codes on your old battery before installing.

More in Laptop Chargers & Batteries

Similar items