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C21P2301 5500mAh 7.78V dual-cell Li-Polymer replacement battery for ASUS ROG Phone 8 AI2401, front view on white background

C21P2301 5500mAh 7.78V Replacement Battery for ASUS ROG 8 / ROG 8 Pro

(1 customer review)

Original price was: $78.99.Current price is: $55.99.

🔘 C21P2301 5500mAh 7.78V | 🔋 Dual-Cell Li-Polymer | 🎮 For ASUS ROG 8 / ROG 8 Pro (AI2401/AI2403)

1+ sold

2 in stock

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SKU: C21P2301 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.

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Description

✅ Condition: Brand New – Never used, premium quality

✅ CE / RoHS / UN38.3 Certified – Safety tested

✅ 90-Day Warranty – Hassle-free replacement

✅ Ships in 3-7 days with tracking – Fast delivery

🛡️ Shipping Protection Available at Checkout – Covered against loss, damage, or theft

✅ PayPal Buyer Protection included – Secure checkout

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

⚠️ Low Stock Alert: Only 2 left in stock. Order now to avoid waiting.

Battery model: C21P2301
Battery capacity: 5500mAh total (dual-cell: 2750mAh × 2)
Rated voltage: 7.78V
Charge limit voltage: 8.95V
Battery type: Li-Polymer (Dual-cell series)
Compatible with: ASUS ROG Phone 8 (AI2401), ASUS ROG Phone 8 Pro (AI2403)
Package include: 1 x battery
Restore ultimate gaming power to your ASUS ROG Phone 8 or ROG 8 Pro with this C21P2301 5500mAh replacement battery. Designed for AI2401 and AI2403 models, this dual-cell Li-Polymer pack delivers reliable performance for extended high-refresh-rate gaming sessions. The ROG Phone 8 series features a 6.78-inch 165Hz AMOLED display, Snapdragon 8 Gen 3 processor, and supports 65W wired fast charging. This replacement battery works seamlessly with the device’s fast charging system. Built-in multi-layer safety protection guards against overcharge, over-discharge, and short circuits. Made with grade A cells. CE, RoHS, and UN38.3 certified for safety compliance. Professional installation recommended as the battery is not user-replaceable.
Compatibility Note: Fits ASUS ROG Phone 8 (AI2401) and ROG Phone 8 Pro (AI2403) only. Please check your current battery model before purchasing. This battery uses dual-cell series design (7.78V) – do not attempt to use with single-cell devices.
Battery Care Tips: Avoid full discharge (keep above 20%). Keep away from high temperatures. If swelling occurs, stop use immediately. For best performance, use the charger that came with your device.

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1 review for C21P2301 5500mAh 7.78V Replacement Battery for ASUS ROG 8 / ROG 8 Pro

  1. M**** (verified owner) –

    Needed a replacement for my ROG 8 Pro after heavy gaming use. This C21P2301 is a direct fit – same size and connector. Phone charges at 65W just like original. Battery life is back to 6+ hours of gaming. Shipping took about 8 days to US, well packed. Will buy again for my other ROG phone.

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Frequently Asked Questions

The C21P2301 battery is compatible with ASUS ROG Phone 8 (AI2401) and ROG Phone 8 Pro (AI2403). If your ROG 8 battery is draining too fast or not holding a charge, this is the correct replacement. Please check your current battery model before purchasing.

Yes, this 5500mAh dual-cell battery for ROG Phone 8 Pro supports the 65W fast charging capability of the device. If you need a high-capacity replacement battery for ASUS ROG 8 that supports extended gaming sessions, this dual-cell Li-Polymer pack is the perfect choice. Made with grade A cells, CE, RoHS, and UN38.3 certified.

The C21P2301 battery has a rated voltage of 7.78V with a charge limit of 8.95V. It uses a dual-cell series design with two 2750mAh cells connected in series to achieve the higher voltage required for the ROG Phone 8's gaming performance. Always check your original battery model before purchasing.

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✅ Ready to order?

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

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