KingSener C21N1808 replacement laptop battery for ASUS Chromebook C423NA and C523NA series: 7.7V, 38Wh, 4940mAh, Li-ion, black. The main photo is the maker's catalog image. The other photos show the actual unit and box.

It replaces ASUS battery C21N1808 and part numbers C21PqCH, 0B200-03060000 and 0B200-03130000 (per the maker). This is an aftermarket replacement, not a genuine ASUS part.

In the box, as shown in the photos: 1 battery with its attached lead and connector in a plastic tray, and the KingSener after-sales service card. An orange item is also visible in the tray; it is not identified. The maker does not list tools or screws.

Compatible with (per the maker):
ASUS Chromebook C423NA series (C423): C423NA-BV0001, C423NA-BV0017, C423NA-BV0028, C423NA-BV0044, C423NA-BV0051, C423NA-BV0054, C423NA-BV0078, C423NA-BZ0004, C423NA-BZ0027, C423NA-BZ0038, C423NA-BZ0057, C423NA-DH02, C423NA-EB0020, C423NA-EB0033, C423NA-EB0050, C423NA-EB0063, C423NA-EB0108, C423NA-RH91T-CB, C423NA-0031AN4200, C423NA-1A
ASUS Chromebook C523NA series (C523 / C523N): C523NA-A20007, C523NA-A20025, C523NA-A20026, C523NA-A20033, C523NA-A20045, C523NA-A20057, C523NA-A20093, C523NA-A20105, C523NA-BR0035, C523NA-BR0043, C523NA-BR0067, C523NA-EJ0052, C523NA-EJ0053, C523NA-EJ0054, C523NA-EJ0058, C523NA-DH02, C523NA-IH24T, C523NA-0021AN4200, C523NA-1A

Important: the maker says there are two types of C21N1808 battery (with different mounting tabs), and they are not compatible with each other. Before you order, open the back cover and compare the shape, mounting tabs and connector of your original battery with the photos of this unit.

Specs (per the maker): model C21N1808; voltage 7.7V; capacity 38Wh / 4940mAh; battery type Li-ion; color black.

Open box from a liquidation lot; see photos for condition and included parts. Please match your original part number before ordering.