C21P2401 5800mAh 7.78V Li-Polymer dual-cell replacement battery for ASUS ROG Phone 9 and ROG Phone 9 Pro, front view showing battery label and dual-cell connector

C21P2401 5800mAh 7.78V Li-Polymer Dual-Cell Replacement Battery for ASUS ROG Phone 9 / 9 Pro 65W HyperCharge

$149.68

🔘 C21P2401 5800mAh 7.78V | 🔋 Dual-Cell Li-Polymer | 📱 Compatible with ASUS ROG Phone 9 / 9 Pro 65W HyperCharge IP68

8 in stock

No PayPal account? 💳 Pay with credit/debit card | 🛡️ PayPal Buyer Protected
SKU: C21P2401 Category: Tags: ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.

Compare✅ Qingsm Tech⚠️ eBay / AliExpress
Warranty Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo recourse, seller can ignore you

🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.

📦 Shipping Cost & Delivery Time (Economy Shipping from China)

📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Bulgaria, Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient's CPF, as it is required for Brazilian customs and shipping. Thanks! We appreciate your understanding.

🇪🇺 Note for EU countries: Due to new EU customs regulations effective July 1, 2026, a flat tariff fee of $4.00 (approx. €3.50) applies to shipments to EU countries. This fee covers customs tariff, handling, and payment processing costs, and will be added at checkout. Thank you for your understanding.

🔋 Can't find your battery model? Use our FREE Battery Lookup Service – tell us your device and we'll find a match within 24 hours. 👉 battery.qingsm.tech/find-my-battery

Description

✅ Condition: Brand New – Never used, factory‑tested quality

✅ CE / RoHS / UN38.3 Certified

✅ 90‑Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3‑7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

✅ 100% Compatibility Guarantee – If it doesn’t fit, we’ll refund you. No questions asked.

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: C21P2401
Total capacity (equivalent): 5800mAh (Typical) / 22.4Wh
Rated voltage (pack output): 7.78V (3.89V × 2 cells in series)
Single cell voltage: 3.89V
Charge limit voltage (single cell): 4.45V
Battery type: Li-Polymer (Dual‑cell series design)
Compatible with: ASUS ROG Phone 9, ASUS ROG Phone 9 Pro — 6.78-inch 185Hz AMOLED display, Snapdragon 8 Elite processor, IP68 dust/water resistance
Replaces OEM part number: C21P2401
Package include: 1 x battery (dual-cell integrated pack)
Restore the elite gaming performance of your ASUS ROG Phone 9 or 9 Pro with this C21P2401 5800mAh replacement battery. The ROG Phone 9 series was released in November 2024, featuring a 6.78‑inch 185Hz AMOLED display, Qualcomm Snapdragon 8 Elite processor, and supports 65W HyperCharge fast charging — capable of reaching 100% in approximately 39 minutes. It also supports 15W Qi wireless charging and is rated IP68 dust/water resistant. This Li‑Polymer battery uses an advanced dual‑cell series design — two cells connected in series to achieve a combined output of 7.78V (3.89V × 2), delivering the factory‑rated 5800mAh equivalent capacity for extended gaming sessions, 5G connectivity, and intensive multitasking. For reference, third‑party retailers sell this battery for approximately $85 to $150.
Built with Grade A Li‑Polymer cells and multi‑layer safety protection against overcharge, over‑discharge, short circuit, and overcurrent. CE, RoHS, and UN38.3 certified for safe transport and use. With a cycle life of 500+ full charge cycles, this replacement battery is designed for long‑term durability. Professional installation is strongly recommended as the battery is not user‑replaceable — the phone has a sealed glass back cover with strong adhesive.
Compatibility Note: Please power down your device and check your original battery label before ordering. This battery is compatible with ASUS ROG Phone 9 and ROG Phone 9 Pro only. The phone is rated IP68 dust/water resistant — professional installation is strongly recommended to maintain this protection after replacement.
Battery Care Tips: Avoid full discharge — keep battery level above 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3‑5 full charge cycles to reach optimal capacity. For best 65W HyperCharge performance, use the original ASUS 65W charger and cable that came with your phone. If you don‘t use the device for a long time, store it in a dry and cool place and charge it fully once every three months. If you notice swelling or overheating, stop use immediately.

Discover more from Battery.qingsm.tech

Subscribe to get the latest posts sent to your email.

Reviews

There are no reviews yet.

Be the first to review “C21P2401 5800mAh 7.78V Li-Polymer Dual-Cell Replacement Battery for ASUS ROG Phone 9 / 9 Pro 65W HyperCharge”

Your email address will not be published. Required fields are marked *
To receive the "Verified Owner" badge, please use the same email address you used when placing your order.

Frequently Asked Questions

The C21P2401 battery for ASUS ROG Phone 9 is compatible with ASUS ROG Phone 9 (standard) and ASUS ROG Phone 9 Pro. The ROG Phone 9 series was released in November 2024, featuring a 6.78‑inch 185Hz AMOLED display, Qualcomm Snapdragon 8 Elite processor, IP68 dust/water resistance, and supports 65W HyperCharge fast charging (with 15W wireless charging). The original battery is a dual‑cell design — two cells connected in series delivering 7.78V output. This C21P2401 Li-Polymer dual-cell replacement battery for ASUS ROG Phone 9 Pro delivers the factory-rated 5800mAh equivalent capacity. If your ASUS ROG Phone 9 battery replacement is needed because the phone drains quickly or won't hold a charge, this is the correct battery. Please verify your device model in Settings > About Phone and check the battery model C21P2401 printed on your existing battery before purchasing.

The C21P2401 5800mAh 7.78V battery has a typical equivalent capacity of 5800mAh (22.4Wh) and a pack output voltage of 7.78V. It is a dual‑cell Li-Polymer battery — two 3.89V cells connected in series (7.78V = 3.89V × 2). Single‑cell charge limit voltage is 4.45V. The C21P2401 5800mAh Li-Polymer dual-cell battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. The ASUS ROG Phone 9 and 9 Pro support 65W HyperCharge fast charging — when paired with the original ASUS 65W charger (20V/3.25A), the 5800mAh battery can be fully charged in approximately 39 minutes. The phones also support 15W Qi 1.3 wireless charging, Quick Charge 5.0, and USB‑C PD charging. The device has an IP68 dust/water resistance rating — the phone can be submerged in up to 1.5 meters of water for 30 minutes. With a cycle life of 500+ full charge cycles, this C21P2401 replacement battery is designed for long-term durability. For best results, always use the original ASUS 65W HyperCharge charger that came with your phone.

Professional installation is strongly recommended for ASUS ROG Phone 9 battery replacement. The ROG Phone 9 and 9 Pro have sealed designs with glass back covers secured by strong adhesive and are rated IP68 dust/water resistant — they can be submerged in up to 1.5 meters of water for 30 minutes. The process to replace C21P2401 battery in ASUS ROG Phone 9 requires heating to soften adhesive, careful prying with plastic tools to avoid damaging the 6.78‑inch AMOLED display, and proper resealing with fresh adhesive to maintain IP68 water resistance after replacement. Water resistance may be compromised if the phone is not properly resealed. If you choose DIY phone battery replacement, watch a full teardown tutorial before starting, use a heat gun at low temperature (no more than 70°C), and never reuse a battery after removal. Third-party repair shops typically charge $30-50 for labor, and IP68 water resistance may not be fully guaranteed after non‑professional repair.

Related products

✅ Ready to order?

This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

👉 Add to Cart Now