---
product_id: 538671741
title: "C21N1808 Laptop Battery Replace for Asus Chromebook C423 C523 C423NA C523NA C423NA-EB C423NA-BZ C523NA-A2 C423NA-RH91T-CB C523NA-DH02 C523NA-EJ0052 C423NA-BV0078 C523NA-A20105 7.7V 38Wh 4940mAh"
brand: "mobik"
price: "¥13579"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/538671741-c21n1808-laptop-battery-replace-for-asus-chromebook-c423-c523-c423na
store_origin: JP
region: Japan
---

# 38Wh / 4940mAh Capacity Up to 500 Recharge Cycles 7.7V Voltage C21N1808 Laptop Battery Replace for Asus Chromebook C423 C523 C423NA C523NA C423NA-EB C423NA-BZ C523NA-A2 C423NA-RH91T-CB C523NA-DH02 C523NA-EJ0052 C423NA-BV0078 C523NA-A20105 7.7V 38Wh 4940mAh

**Brand:** mobik
**Price:** ¥13579
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your productivity, never miss a beat!

## Quick Answers

- **What is this?** C21N1808 Laptop Battery Replace for Asus Chromebook C423 C523 C423NA C523NA C423NA-EB C423NA-BZ C523NA-A2 C423NA-RH91T-CB C523NA-DH02 C523NA-EJ0052 C423NA-BV0078 C523NA-A20105 7.7V 38Wh 4940mAh by mobik
- **How much does it cost?** ¥13579 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/538671741-c21n1808-laptop-battery-replace-for-asus-chromebook-c423-c523-c423na)

## Best For

- mobik enthusiasts

## Why This Product

- Trusted mobik brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Hassle-Free Support:** Backed by 12-month warranty, 30-day refund, and 24/7 responsive customer service for peace of mind.
- • **Safety-First Design:** Certified UL, CE, FCC, and RoHS with built-in protections against short circuit, overheating, and overload.
- • **Reliable Power Boost:** Grade A Li-ion cells deliver consistent 7.7V and 38Wh capacity for all-day productivity.
- • **Long-Lasting Endurance:** Supports up to 500 recharge cycles, keeping your Chromebook powered through countless workdays.
- • **Seamless Compatibility:** Specifically engineered for Asus Chromebook C423 & C523 series models—perfect fit guaranteed.

## Overview

The C21N1808 replacement battery is a high-quality, 7.7V 38Wh Li-ion power source designed exclusively for Asus Chromebook C423 and C523 series. Featuring premium grade A cells, it delivers up to 500 recharge cycles with robust safety certifications and comes with comprehensive customer support and warranty—ensuring your device stays energized and reliable.

## Description

C21N1808 Laptop Battery Replace for Asus Chromebook C423 C523 C423NA C523NA C423NA-EB C423NA-BZ C523NA-A2 C423NA-RH91T-CB C523NA-DH02 C523NA-EJ0052 C423NA-BV0078 C523NA-A20105 7.7V 38Wh 4940mAh

## Features

- 【Adhering To The Principle Of Customer First】We specialize in providing quality power products and quality customer service. Rest assured with 30 days Refund and 12 months Warranty; 24 x 7 email support. (Note: desertcart return windows will close after one month, If you have any problem with battery, please Contact us - in “YOUR ORDER” options click the “contact seller”.)
- 【Tech Specs & 100% New Products】①Model: C21N1808; ②Voltage: 7.7V; ③Capacity: 38Wh/ 4940mAh; ④Battery type: Li-ion. (We only use grade A battery cells that provide up to 500 recharge cycles over the life of the battery. Come with screwdrivers.)
- 【Compatible Part Number】Fit for C21N1808 / C21PqCH / 0B200-03060000 / 0B200-03130000. (Note:there are two types of C21N1808 batteries, they are Not compatible with each other. please confirm your original battery is the same as in the picture.)
- 【Replacement For Laptop】①For Asus Chromebook C423NA / 423NA-BV0001 / C423NA-BV0017 / C423NA-BV0044 / C423NA-BV0051 / C423NA-BV0054 / C423NA-BV0078 / C423NA-BZ0004 C423NA-BZ0027 / C423NA-BZ0038 / C423NA-BZ0057 / C423NA-DH02 Series; ②For Asus Chromebook C523NA / C523NA-A20007 / C523NA-A20025 / C523NA-A20026 / C523NA-A20033 / C523NA-A20045 / C523NA-A20057 / C523NA-A20093 / C523NA-A20105 Series.
- 【High Quality Materials & Packed With Safety Features】All Mobik products are certified by UL / CE / FCC / RoHS for safety. We’re so confident in the performance of our replacement laptop batteries, strict guidelines for compatibility, strict quality control standards and standards compliance for environment safety. (including short circuit, overheat, and overload protections.)
- 【Tips】If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.

## Product Details

- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Brand:** Mobik
- **Battery Cell Composition:** Lithium Ion
- **Battery Capacity:** 4940 Milliamp Hours
- **Recommended Uses For Product:** Laptop

## Images

![C21N1808 Laptop Battery Replace for Asus Chromebook C423 C523 C423NA C523NA C423NA-EB C423NA-BZ C523NA-A2 C423NA-RH91T-CB C523NA-DH02 C523NA-EJ0052 C423NA-BV0078 C523NA-A20105 7.7V 38Wh 4940mAh - Image 1](https://m.media-amazon.com/images/I/71YBlG7WxYL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/538671741-c21n1808-laptop-battery-replace-for-asus-chromebook-c423-c523-c423na](https://www.desertcart.jp/products/538671741-c21n1808-laptop-battery-replace-for-asus-chromebook-c423-c523-c423na)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-11*