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Rectangular black lithium-ion laptop battery with connector ribbon

KingSener

KingSener AP19A8K laptop battery 11.55V 40.22Wh

SKU CH-QDYH-3W4AX MPN AP19A8K

Replacement lithium-ion battery for Acer Chromebook Spin 311 models CP311-1H and CP311-2H, rated 11.55V and 40.22Wh

  • Battery Voltage11.55V
  • Battery Capacity40.22Wh/3482mAh
  • Compatible with Acer Chromebook Spin 311 models CP311-1H and CP311-2H
  • 55V 40.22Wh capacity matches original design specifications
  • Li-ion cells deliver stable power and longer running time
  • 100% brand new replacement battery with perfect fit
  • One year warranty included for peace of mind

Replacement Battery for Acer Chromebook Spin 311

The KingSener AP19A8K is a lithium-ion replacement battery built for Acer Chromebook Spin 311 models including CP311, CP311-1H, CP311-2H and their C5PN, C2DV, C1FS, C679 variants. It delivers 11.55V and 40.22Wh capacity using grade-A cells and a protected circuit board. Buyers who need a higher-capacity pack or a different voltage should look elsewhere.

Steady Output Through a Full Day

The 3482mAh cell arrangement holds its rated 40.22Wh from first charge to end of cycle, so runtime stays predictable during long classroom or travel sessions. The onboard PCB regulates current to prevent sudden drops when the system draws peak power. Users who expect the battery to maintain burst performance beyond its design limits will see normal voltage sag instead.

Direct Fit With Simple Calibration

The pack matches the original dimensions and connector layout, so it drops into the chassis without adapters or cable routing. First use requires two to three full charge and discharge cycles at low current to calibrate the fuel gauge. Installers who skip this step or leave the charger attached continuously often report inaccurate percentage readings.

Highlights

  • Compatible with Acer Chromebook Spin 311 models CP311-1H and CP311-2H
  • 55V 40.22Wh capacity matches original design specifications
  • Li-ion cells deliver stable power and longer running time
  • 100% brand new replacement battery with perfect fit
  • One year warranty included for peace of mind

Specifications

BrandKingSener
ModelAP19A8K
Part NumberAP19A8K 3ICP5/58/72 KY.0030G023
Battery Voltage11.55V
Battery Capacity40.22Wh/3482mAh

Questions about this item

How much heat does the 11.55 V, 40.22 Wh Li-ion pack generate during all-day use?

The 11.55 V, 40.22 Wh lithium-ion battery produces minimal heat under normal load; keep vents clear and avoid hot environments to maintain stable temperatures.

What must I already own to install the AP19A8K replacement battery?

You need a compatible Acer Chromebook Spin 311 such as the CP311, CP311-1H, CP311-1H-C5PN, CP311-1H-C2DV, CP311-1H-C1FS, CP311-2H or CP311-2H-C679 and a small screwdriver for the bottom case.

Will the 3482 mAh KingSener cell work reliably in an older Spin 311 that has seen heavy daily cycles?

Yes, the 3482 mAh Li-ion pack matches the original 11.55 V specification and fits the same chassis, so older Spin 311 units regain full runtime without modification.

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