C21N1347 Internal Battery for ASUS X555 X555L X555LA X555LD F555L K555L R556L | 7.5V 37Wh

Detailed Product Specifications and Features:

Core Technical Parameters:

Technical Note:

Note: The C21N1347 is an Internal battery. The ASUS X555 series is famous for having multiple sub-variants; however, almost all X555 laptops with a 2-cell internal battery use this exact model. Please ensure your original battery model is C21N1347 before purchasing. This battery is fully compatible with both the 7.5V and 7.6V versions found in original machines.

Product Features:

• Battery Newest Premium Grade Cells
• Best Circuit Board
• Multiple command chip control, keep the battery stable charge and discharge;
• Over-charger protection and discharger protection, short-circuit protection, ensure fast charges and low power consumption
• Easy & Quick Installation
• Our battery is 100% compatible with the original battery and meets
• CE/FCC/ROHS/UL-certified standards. It is 100% new from the manufacturer and can support up to 1000 recharge cycles over the life of the battery
• Power Interface: Gold-plated connector points to ensure current transport excellently and serve stably.
• Enclosure: The enclosure is made of ABS + PC high-quality material, which has a high-temperature-resistant function to protect your laptop from overheating
• Battery Buckle: The battery buckle is closely connected to the laptop, and the metal interface is stably powered

C21N1347 / 2ICP4/63/134 Battery Compatibility Laptop Model List:

C21N1347 / 2ICP4/63/134 Battery Compatible P/N (Part Numbers) List

• C21N1347
• 2ICP4/63/134
• C21NI347 (Common typo)
• 0B200-01200100 | 0B200-01200300

Why Choose HTJ C21N1347 Battery?

• Precision Ultra-Slim Design:
  The HTJ C21N1347 is engineered with a 1:1 original mold to ensure it fits perfectly within the internal chassis of the X555 series. The screw holes and ribbon cable connector are precisely aligned, making installation seamless and secure.
• High-Density Grade A+ Cells:
  We utilize premium Li-polymer cells that provide a true 37Wh capacity. These Grade A+ cells offer superior energy density and are rated for up to 1000 recharge cycles, breathing new life into your ASUS laptop.
• Intelligent BMS Protection:
  Safety is our priority. Our integrated Battery Management System (BMS) prevents over-charging, over-discharging, and short-circuiting, meeting or exceeding all international safety standards (CE/FCC/RoHS).
• Reliable 18-Month Warranty:
  HTJ stands behind every product. Unlike standard 6-month warranties, we provide an industry-leading 18-month warranty and professional factory-direct support to ensure your long-term satisfaction.

How to Install Your New C21N1347 Battery?

Replacing the internal battery on an ASUS X555 series laptop is a straightforward DIY task that takes about 15-20 minutes.

⚠️ Crucial Safety Preparation

• Power Down: Ensure the laptop is fully turned off and the charger is unplugged.
• Tools Needed: A small Phillips #0 screwdriver and a plastic prying tool.

C21N1347 Battery Step-by-Step Installation Guide

1. Remove Base Screws: Flip the laptop over. Remove all Phillips screws from the bottom case. Note: On the X555, screws are of different lengths—keep them organized!
2. Open the Palmrest: The X555 opens from the top. Gently use a prying tool to separate the keyboard/palmrest assembly from the bottom base.
3. Disconnect Cables: Carefully lift the keyboard and disconnect the keyboard and touchpad ribbon cables from the motherboard. Set the keyboard assembly aside.
4. Remove the Old Battery: Locate the C21N1347 battery. Remove the screws holding it in place. Gently slide the battery out of its connector on the motherboard.
5. Install New HTJ Battery: Align the new HTJ C21N1347 battery and slide it firmly into the connector. Reinstall the mounting screws.
6. Reassemble and Calibrate: Reconnect the keyboard/touchpad cables, snap the palmrest back on, and tighten the bottom screws. Charge to 100%, then discharge to 5% to calibrate the new power levels.

💡 Pro Tip:

The X555 series has two hidden screws under the rear rubber feet on some regional models. If the case doesn’t pop open easily, check under the rubber pads to avoid cracking the plastic.

FAQ:

Q: Is C21N1347 compatible with all X555 models?
A: Yes, it fits almost the entire X555 family (X555L, X555U, X555D, etc.) that uses an internal 2-cell battery. However, always verify your original battery model name printed on the battery itself before ordering.

Q: My original battery says 7.6V, but yours is 7.5V. Is it safe?
A: Absolutely. 7.5V and 7.6V are nominal voltages for the same 2-cell configuration. They are 100% interchangeable and will not harm your laptop or affect performance.

Q: Why is my new battery not being detected?
A: This is usually due to the internal connector not being fully seated. Re-open the laptop and ensure the battery is pushed all the way into the motherboard socket and that the mounting screws are tight.

Laptop Maintenance Tips:

1. New battery: For using a new battery, you’d better try a few cycles of discharging to 5%. then charging up to 95%. So that it can be activated completely
2. Overuse: Do not always run a battery to 0%, as this would shorten its usage life.
3. Charging sequence: When charging, first install the battery, then turn on the power. When fully charged, first cut off the power, then pull the power plug.
4. Long-term storage: Please store the unused battery fully charged. (Charge it once a month.) Do not store at low power to prevent reducing the lifespan of a battery
5. Charger: Do not replace the laptop adapter casually. If the original adapter cannot be applied due to malfunction or damage, please replace the models so as not to reduce the service life of the battery due to incompatibility.

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