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Rectangular black lithium-ion laptop battery pack

PISKEKAT

PISKEKAT C31-X502 laptop battery 38Wh/44Wh 7.4V/11.1V

SKU CH-25DM-KEHAP

Replacement Li-ion battery for Asus X502, S500 and PU500 series laptops, 38Wh or 44Wh at 7.4V/11.1V

  • Battery TypeLaptop Batteries
  • Li-ion chemistry delivers stable voltage at 7.4V/11.1V
  • 38Wh/44Wh capacity supports extended work sessions
  • Replaces original part numbers C31-X502 C21-X502 0B200-00320300M
  • Fits Asus X502, Vivobook S500 and PU500 series laptops
  • Initial 3-4 cycles to 95% charge optimises long-term health

Replacement Battery for Asus X502 and S500 Series

This Li-ion battery replaces part numbers C31-X502, C21-X502 and 0B200-00320300M in compatible Asus X502, X502C, X502CA, S500, S500C, S500CA and PU500 series laptops. It is a new unit intended for owners whose original pack no longer holds a useful charge.

Thermals Noise and Power Draw in Normal Use

The cell chemistry operates at 7.4V or 11.1V with a capacity of 38Wh or 44Wh depending on the specific variant supplied. Li-ion construction keeps self-discharge low during standby and produces no audible noise because there are no moving parts. Heat output remains modest under typical office workloads.

Fitment and First-Use Conditioning

The pack fits the existing battery bay without adapter cables or chassis modification and restores mobile operation immediately after installation. For first use, discharge the battery to 5% then charge to 95% and repeat the cycle three to four times to calibrate the fuel gauge. Buyers needing a higher-capacity pack or a different voltage should verify their laptop's exact part number before ordering.

Highlights

  • Li-ion chemistry delivers stable voltage at 7.4V/11.1V
  • 38Wh/44Wh capacity supports extended work sessions
  • Replaces original part numbers C31-X502 C21-X502 0B200-00320300M
  • Fits Asus X502, Vivobook S500 and PU500 series laptops
  • Initial 3-4 cycles to 95% charge optimises long-term health

Specifications

Battery TypeLaptop Batteries

Questions about this item

How do I install the C31-X502 battery in my Asus X502 series laptop?

Power off the laptop, unplug the charger, remove the bottom case screws, disconnect the old battery connector, fit the new C31-X502, reconnect the cable, replace the case and screws, then charge fully.

What maintenance will the 38Wh or 44Wh Li-ion battery need later?

No scheduled maintenance is required; if capacity drops noticeably after many charge cycles, replace the battery with another C31-X502 or compatible part number.

What limit appears first during sustained use of the 7.4V or 11.1V pack?

The pack will hit its thermal or voltage protection limit before the 38Wh or 44Wh capacity is fully depleted under continuous heavy load.

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