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 7.7V 50Wh

Beisite

Beisite C22N1720 C22PYJH 7.7V 50Wh laptop battery

SKU CH-P83Z-CPGMB

Replaces Asus ZenBook S UX391 series batteries with a 7.7V 50Wh lithium-ion unit

  • ColorBlack
  • TypeBattery
  • Compatibilityfor ZenBook S UX391 UX391U UX391FA UX391UA Series
  • Battery TypeLithium-Ion
  • Battery Voltage7.7V
  • Battery Capacity50Wh
  • Direct replacement for Asus ZenBook S UX391 series
  • 50 Wh capacity restores full runtime
  • 7 V lithium-ion chemistry matches original spec
  • Replaces part numbers C22N1720, C22PYJH and 0B200-02820000E
  • Brand-new condition with 12-month warranty

Replacement battery for ZenBook S UX391 series

This 7.7V 50Wh lithium-ion cell replaces part numbers C22N1720 and C22PYJH in Asus ZenBook S UX391, UX391U, UX391FA and UX391UA models. It fits the extensive sub-model list including UX391UA-1A, UX391FA-AH005T and related variants. Buyers whose laptop uses a different part number or chassis will need a different battery.

Thermals noise and power draw in normal use

The lithium-ion chemistry delivers steady 7.7V output during typical office work, web browsing and media playback. Internal resistance stays low so the pack runs cool and silent without active cooling. Capacity of 50Wh supports everyday unplugged sessions at the laptop's designed power envelope.

Behaviour under sustained load

During prolonged compile jobs, video exports or back-to-back meetings the cell maintains voltage without rapid sag thanks to its 50Wh rating. Heat builds gradually inside the sealed pack but remains within lithium-ion safety limits. Users who regularly drain the battery to empty should expect normal cycle ageing over months of heavy use.

Highlights

  • Direct replacement for Asus ZenBook S UX391 series
  • 50 Wh capacity restores full runtime
  • 7 V lithium-ion chemistry matches original spec
  • Replaces part numbers C22N1720, C22PYJH and 0B200-02820000E
  • Brand-new condition with 12-month warranty

Specifications

BrandC22N1720
ModelC22N1720
Part NumberC22PYJH
ColorBlack
TypeBattery
Compatibilityfor ZenBook S UX391 UX391U UX391FA UX391UA Series
Battery TypeLithium-Ion
Battery Voltage7.7V
Battery Capacity50Wh

Questions about this item

How do I install the C22PYJH battery in my ZenBook S UX391 and what step do people often miss?

Remove the bottom case screws, disconnect the old pack's connector, fit the new 7.7V 50Wh unit, reconnect the cable firmly, then replace the case and screws before powering on.

What replacement will this lithium-ion 50Wh pack need later?

The sealed cell assembly is not user-serviceable; once capacity fades you replace the entire C22N1720 battery pack.

What limit appears first during sustained use of this 7.7V battery?

The 50Wh capacity determines runtime; under continuous load the pack will deplete before any thermal or voltage cutoff is reached.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.