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Rectangular black lithium-ion laptop battery, 75WH capacity

KingSener

KingSener L21C4PH1 75WH laptop battery for Lenovo Yoga Slim 9-14IAP7 82T0 82T1

SKU CH-0NTK-1ZK4V MPN L21C4PH1

75 WH lithium-ion replacement battery rated at 15.52 V for Lenovo Yoga Slim 9-14IAP7 series laptops

  • Battery Voltage15.52V
  • Battery Capacity4833mAh/75WH
  • 75Wh capacity powers your Lenovo Yoga Slim 9 through long sessions
  • 52V voltage matches original battery specifications for stable operation
  • 4833mAh lithium-ion cells deliver reliable daily performance
  • Replaces multiple Lenovo part numbers including L21M4PH1 and L21D4PH1
  • Compatible with Yoga Slim 9-14IAP7 82T0 and 82T1 series

Replacement battery for Yoga Slim 9

The KingSener L21C4PH1 is a 75WH lithium-ion pack built to replace the original battery in Lenovo Yoga Slim 9-14IAP7 models 82T0 and 82T1. It matches the 15.52V operating voltage and 4833mAh capacity of the factory part numbers L21M4PH1, L21C4PH1, L21L4PH1 and L21D4PH1. Owners of other Lenovo ultraportables should verify their original battery model before ordering.

Thermals and power behaviour

The cell chemistry runs at the same 15.52V as the original, so the laptop’s charging controller manages temperature and current draw exactly as designed. No additional fan noise or thermal load is introduced because the replacement operates within the original power envelope. Battery life per charge will reflect the 75WH rating under the same workloads the system already expects.

Build and daily fit

The black lithium-ion unit fits the internal battery bay of the Yoga Slim 9-14IAP7 without modification and aligns with the existing connector layout. Replacing the pack requires opening the laptop’s back cover to access the battery compartment. Buyers who are not comfortable with internal disassembly or who need a higher-capacity option than 75WH should look elsewhere.

Highlights

  • 75Wh capacity powers your Lenovo Yoga Slim 9 through long sessions
  • 52V voltage matches original battery specifications for stable operation
  • 4833mAh lithium-ion cells deliver reliable daily performance
  • Replaces multiple Lenovo part numbers including L21M4PH1 and L21D4PH1
  • Compatible with Yoga Slim 9-14IAP7 82T0 and 82T1 series

Specifications

BrandKingSener
ModelL21C4PH1
Part NumberL21M4PH1 L21C4PH1 L21L4PH1 L21D4PH1
Battery Voltage15.52V
Battery Capacity4833mAh/75WH

Questions about this item

How do I install the KingSener L21C4PH1 battery in my Lenovo Yoga Slim 9-14IAP7, and which step is most often missed?

Power off the laptop, remove the bottom case screws, disconnect the old battery connector before lifting it out, fit the new L21C4PH1 unit, reconnect the cable firmly, then reassemble; the step most often missed is disconnecting the battery cable before removing the original pack.

What replacement will the KingSener L21C4PH1 need after extended use?

The lithium‑ion cells degrade over time; once the 75WH capacity drops below usable levels, the entire L21C4PH1 battery pack must be replaced.

What limit appears first when the KingSener L21C4PH1 runs under sustained load?

The 15.52V voltage will sag as the 4833mAh cells discharge, and thermal protection may throttle output before the full 75WH is delivered.

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