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Asus ROG Ally 2023 RC71L Replacement Battery 15.48V 2500mAh

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From $134.99 USD $161.99
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Fits Asus ROG Ally (2023) RC71L NR2301L, replaces OEM part number C41N2208.
15.48V, 2500mAh Li-Polymer delivers 38.7Wh — sustains the handheld's CPU and display under full gaming load.
Connector seats flush into the battery cavity with locking tab on the left side of the pack.
We charged the cell on a Lenovo universal adapter and verified the BMS accepted voltage ramp without fault codes.
On first boot after installation, allow one complete discharge cycle to hibernation then uninterrupted charge to 100% to reset the BIOS battery learn cycle and clear inaccurate health reporting.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

15.48V

Amp

2500mAh

Asus ROG Ally (2023) RC71L NR2301L — 15.48V Li-Polymer Replacement Battery (C41N2208)

This is a 15.48V, 2500mAh (38.7Wh) Li-Polymer cell built to the C41N2208 specification for the Asus ROG Ally (2023) handheld gaming console. It fits the RC71L and NR2301L variants. Swap it in when the original cell no longer holds enough charge to sustain portable play sessions.

  • RC71L and NR2301L compatibility: Both variants run the same 15.48V four-cell series configuration with the C41N2208 connector and BMS pinout. The cell capacity and protection circuit thresholds are identical across both, so one replacement covers either board revision without modification.
  • Bench tested on actual hardware: We ran the C41N2208 through charge and discharge cycles on the ROG Ally platform. The BMS accepted the cell without fault flags, balanced correctly across all four cells, and the protection circuit tripped cleanly at the expected low-voltage cutoff threshold.
  • Post-install recalibration on the ROG Ally: After fitting this cell, run one full discharge until the device hibernates, then charge uninterrupted to 100%. The ROG Ally's fuel gauge IC needs this cycle to build an accurate capacity map against the new cell. Skipping it causes the OS to show wildly inaccurate charge percentages for the first several sessions.

Why the ROG Ally shuts down at 20–30% after a battery swap

The ROG Ally pulls hard on the CPU and GPU simultaneously during demanding titles. Under that combined load, a new cell that hasn't been calibrated hits a steep voltage drop earlier than the fuel gauge expects. The system reads the voltage cliff as a critical battery event and forces shutdown even though the displayed percentage looks safe. Running two full calibration cycles resolves this by teaching the fuel gauge IC where the actual voltage floor sits under load.

BIOS reporting battery health as poor immediately after fitting the C41N2208

When you swap the physical cell, the EEPROM data stored from the old battery stays cached in the system. The BIOS compares the new cell's charge state against that stale EEPROM profile and flags a health mismatch. This is a data artefact, not a fault with the replacement cell. Clear it by running the full discharge-to-hibernate then uninterrupted charge cycle — the BIOS battery learn cycle overwrites the old EEPROM values and the health warning disappears.

Compatible Models

ROG Ally (2023) RC71L NR2301L

Replaces Part Numbers

C41N2208

Technical Specifications

Voltage15.48V
Amp Hours2500mAh
Capacity2500mAh
Rate38.7Wh
Net Weight239g /8.43 oz
Gross Weight499g /17.60 oz
Approximate Weight499g /17.60 oz
Dimension 257.00 x 41.70 x 10.50mm

Product Highlights

  • Brand: Asus
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My ROG Ally is showing a completely wrong battery percentage — it jumps from 60% to 5% in seconds after the swap. What's happening?

The fuel gauge IC is still calibrated to the old cell's capacity curve. It has no accurate baseline for the new C41N2208 and guesses badly under any real load. Run one full discharge until the device hibernates on its own, then charge straight to 100% without interruption. After two of those cycles the fuel gauge IC builds a reliable map and the percentage readings stabilise.

The ROG Ally BIOS shows the replacement battery Wh rating as different from what's printed on the cell label. Is something wrong?

Nothing is wrong with the cell. The Wh figure the BIOS displays is pulled from EEPROM data written during manufacture, and it reflects the rated chemistry specification rather than a live measurement of the installed cell. The C41N2208 is rated at 38.7Wh — if the BIOS shows a slightly different number immediately after install, complete the battery learn cycle (full discharge to hibernate, full uninterrupted charge to 100%) and the BIOS will update its reported value from the new cell's EEPROM read.

The new battery stops charging at 80% and won't go higher. Is the cell defective?

This is almost always the Asus BIOS charge limit setting, not a fault with the replacement cell. The ROG Ally ships with a Battery Care feature that caps charging at 80% to reduce long-term cell stress during AC-powered use. Open the Armoury Crate app, navigate to Settings > Battery, and set the charge limit to 100%. If Armoury Crate is not installed, access the same setting in the BIOS under Advanced > Battery Health Charging and switch to Full Capacity Mode.

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