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Black rectangular lithium-ion laptop battery with label showing 38Wh 7.7V

Beisite

Beisite C21N1808 laptop battery 38Wh 7.7V black

SKU CH-7K84-HM0QV

A 38 Wh lithium-ion battery at 7.7 V replaces part numbers C21N1808 and 21CP4/91/91 for compatible Chromebook C423 and C523 models

  • ColorBlack
  • TypeBattery
  • Compatibility21CP4/91/91
  • Battery TypeLithium-Ion
  • Battery Voltage7.7V
  • Battery Capacity38Wh
  • Replaces original C21N1808 and 21CP4/91/91 part numbers
  • 38Wh lithium-ion cell delivers 7.7V for compatible Chromebooks
  • Fits C423NA and C523NA series including C423NA-BV and C523NA-BR models
  • Also matches 0B200-03060000 and 0B200-03130000M replacements
  • Brand-new black battery supplied as single unit

Replacement battery for select Chromebooks

This new lithium-ion battery replaces part numbers C21N1808, C21PqCH, 21CP4/91/91, 0B200-03060000 and 0B200-03130000M. It fits a wide range of C423 and C523 Chromebook models including C423NA, C423NA-BV, C423NA-BZ, C523NA, C523NA-A2, C523NA-BR, C523NA-EJ and C523NA-DH variants. The black pack is supplied as a single unit ready for installation.

Capacity and voltage match

The battery delivers 38Wh at 7.7V, matching the original specification for the listed Chromebooks. Capacity is the single figure that determines whether this pack will provide the expected runtime for your device.

Low heat and silent operation

As a solid-state lithium-ion pack it generates minimal heat during normal charge and discharge cycles and produces no audible noise. Power draw follows the laptop's own management system without adding extra load.

Highlights

  • Replaces original C21N1808 and 21CP4/91/91 part numbers
  • 38Wh lithium-ion cell delivers 7.7V for compatible Chromebooks
  • Fits C423NA and C523NA series including C423NA-BV and C523NA-BR models
  • Also matches 0B200-03060000 and 0B200-03130000M replacements
  • Brand-new black battery supplied as single unit

Specifications

BrandC21N1808
ModelC21N1808
ColorBlack
TypeBattery
Compatibility21CP4/91/91
Battery TypeLithium-Ion
Battery Voltage7.7V
Battery Capacity38Wh

Questions about this item

How long will the 38 Wh capacity actually run my Chromebook?

The 38 Wh lithium-ion cell stores the same energy as the original C21N1808 pack, so a Chromebook C423NA or C523NA should deliver its factory-rated runtime when the battery is new and the system is in typical use.

Does the 7.7 V rating match the charging circuit in my C523NA?

Yes. The 7.7 V output is the exact nominal voltage specified for the C21N1808 part number used in Chromebook C423 and C523 models, so the laptop’s charging controller will recognise and charge it normally.

Will this black pack fit the battery bay on a C423NA-BV0054 without modification?

The replacement is built to the C21N1808 form factor and replaces part numbers 0B200-03060000 and 0B200-03130000M, so it seats directly in the existing bay on all listed Chromebook C423 and C523 variants.

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