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Black rectangular 65W AC adapter with 20V output and barrel connector

Battery Technology Inc.

Battery Technology Inc. 4X21J81436-BTI 20V 65W power supply

SKU CH-2KP8-ADCE8 MPN 4X21J81436-BTI

Replacement 20 V 65 W AC adapter compatible with Lenovo ThinkCentre M60E, M60Q, M70Q, M75N, M80Q, M90N and M90Q

  • Reliable power for Lenovo ThinkCentre desktops
  • Delivers 20V at 65W for stable operation
  • Replaces multiple OEM part numbers including 4X21J81436
  • Brand-new condition ensures full performance from day one

20V 65W AC adapter for Lenovo Tiny desktops

This replacement power supply delivers 20 volts at up to 5 amps for Lenovo ThinkCentre M70Q, M75N, M90N, M60E, M60Q, M80Q and M90Q systems. It matches the original 4X21J81436, 5A10V03250, SA11B48989, A19-065N2A, 5A10V03238 and SA10J20170 part numbers. The unit is new and ready for direct connection to the desktop's power jack.

65 watt output with multi-model compatibility

The adapter comfortably powers the listed Tiny form-factor desktops under typical office workloads including integrated graphics and standard peripherals. It reaches its limit when the CPU sustains maximum turbo frequencies while driving multiple high-draw USB devices. Systems requiring more than 65 watts or a different voltage rail are not supported.

Punti di forza

  • Reliable power for Lenovo ThinkCentre desktops
  • Delivers 20V at 65W for stable operation
  • Replaces multiple OEM part numbers including 4X21J81436
  • Brand-new condition ensures full performance from day one

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Domande su questo articolo

Will the 20V 65W adapter power my ThinkCentre M70Q alongside the existing internal PSU?

The adapter supplies 20V at up to 5A for the M70Q and other listed ThinkCentre models, replacing the original 65W unit.

How do I verify the 4X21J81436-BTI is delivering 65W after I connect it?

The system should boot normally and show the correct power source in Lenovo Vantage or the BIOS power section.

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