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C11P1903 6000mAh 3.85V Li-Polymer replacement battery for ASUS ROG Phone 3 ZS661KS, front view showing battery label and connector flex cable

C11P1903 6000mAh 3.85V Li-Polymer Replacement Battery for ASUS ROG Phone 3 ZS661KS ZS661KL

Original price was: $32.99.Current price is: $26.99.

🔘 C11P1903 6000mAh 3.85V | 🔋 Li-Polymer | 📱 Compatible with ASUS ROG Phone 3 ZS661KS ZS661KL

8 in stock

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SKU: c11p1903 Category: Tags: , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

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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
Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
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.

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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: C11P1903 (Replaces OEM 0B200-03720100, 1ICP6/54/108)
Capacity: 6000mAh (Typical) / 23.1Wh | 5800mAh (Rated)
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-Polymer / Li-ion
Cycle life: 500+ cycles retains ≥80% capacity
Compatible with: ASUS ROG Phone 3 (ZS661KS, ZS661KL, ASUS_I003D, I003DD)
Replaces OEM part numbers: C11P1903, 0B200-03720100, 1ICP6/54/108
Package include: 1 x battery
Power up your ASUS ROG Phone 3 with this C11P1903 6000mAh replacement battery. Released in July 2020, the ROG Phone 3 features a 6.59-inch 144Hz AMOLED display, Snapdragon 865+ processor, and supports 30W HyperCharge (10V/3A) fast charging via USB-C — capable of reaching 4,510mAh (75% of total capacity) in just 46 minutes. This Li-Polymer battery delivers the factory-rated 6000mAh capacity for extended gaming sessions, high-refresh-rate display usage, and intensive multitasking. For reference, third‑party retailers sell this battery for approximately $25 to $45.
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.
Compatibility Note: Please power down your device and check your original battery label before ordering. This battery is compatible with ASUS ROG Phone 3 (ZS661KS, ZS661KL, ASUS_I003D, I003DD). Professional installation is strongly recommended as the battery is not user‑replaceable — the phone has a sealed back cover with strong adhesive.
⚠️ Important Note: This battery shares the same physical dimensions as the original. It is a Class 1 Laser Product; do not look directly into the laser beam of the ROG Phone 3’s AirTrigger sensors during operation.
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 30W HyperCharge performance, use the original ASUS 30W charger (10V/3A) and cable. 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.

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Frequently Asked Questions

The C11P1903 battery for ASUS ROG Phone 3 is compatible with ASUS ROG Phone 3 (models ZS661KS, ZS661KL, ASUS_I003D, I003DD). The ROG Phone 3 was released in July 2020 featuring a 6.59-inch 144Hz AMOLED display, Snapdragon 865+ processor, AirTrigger 3 ultrasonic sensors, and supports 30W HyperCharge fast charging. This C11P1903 Li-Polymer replacement battery for ASUS ROG Phone 3 ZS661KS delivers the factory-rated 6000mAh capacity. If your ASUS ROG Phone 3 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 C11P1903 printed on your existing battery before purchasing.

The C11P1903 6000mAh 3.85V battery has a typical capacity of 6000mAh (23.1Wh) and a rated voltage of 3.85V. Charge limit voltage is 4.4V. The C11P1903 6000mAh 3.85V Li-Polymer battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. The C11P1903 battery with 23.1Wh energy supports 30W HyperCharge fast charging — when paired with the original ASUS 30W charger (10V/3A), the ROG Phone 3 can reach 4,510mAh (75% of total capacity) in just 46 minutes. The phone also supports Quick Charge 4.0 and Power Delivery 3.0 (up to 30W) using compatible adapters. With a cycle life of 500+ full charge cycles, this C11P1903 replacement battery is designed for long-term durability. For best results, always use the original ASUS 30W HyperCharge charger that came with your phone.

Professional installation is strongly recommended for ASUS ROG Phone 3 battery replacement. The ROG Phone 3 has a sealed design with a glass back cover secured by strong adhesive — the battery is not user‑replaceable. The process to replace C11P1903 battery in ASUS ROG Phone 3 ZS661KS requires heating to soften adhesive (using a heat gun at no more than 70°C), careful prying with plastic tools to avoid damaging the display or back cover, and proper reassembly. The phone has no official IP water resistance rating, so water seal maintenance is not a concern after replacement. If you choose DIY phone battery replacement, watch a full teardown tutorial before starting, use plastic tools to avoid damaging internal components, and never reuse a battery after removal. Third-party repair shops typically charge $15-30 for labor.

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