{"id":63226,"date":"2025-06-17T04:17:48","date_gmt":"2025-06-17T04:17:48","guid":{"rendered":"https:\/\/www.adapter-laptop.com\/blog\/asus-c21n1504-38wh-battery-replacement-guide-compatible-with-e205sa-tp200sa-models-au-nz\/"},"modified":"2025-06-17T04:17:48","modified_gmt":"2025-06-17T04:17:48","slug":"asus-c21n1504-38wh-battery-replacement-guide-compatible-with-e205sa-tp200sa-models-au-nz","status":"publish","type":"post","link":"https:\/\/www.adapter-laptop.com\/blog\/asus-c21n1504-38wh-battery-replacement-guide-compatible-with-e205sa-tp200sa-models-au-nz\/","title":{"rendered":"ASUS C21N1504 38Wh Battery Replacement Guide | Compatible with E205SA, TP200SA Models | AU\/NZ"},"content":{"rendered":"

ASUS C21N1504 38Wh Laptop Battery Replacement Guide<\/h1>\n

If your ASUS laptop is struggling to hold a charge or showing battery warning signs, our comprehensive guide helps you find the right replacement battery and install it safely. This 38Wh battery is specifically designed for several popular ASUS models commonly used across Australia and New Zealand.<\/p>\n

\"ASUS<\/a><\/div>\n
Shop ASUS C21N1504 Battery<\/a><\/div>\n

Battery models & part numbers<\/h2>\n
\n\n\n\n\n\n\n
Reference \/ P\/N<\/th>\n<\/tr>\n<\/thead>\n
0B200-01710100<\/td>\n<\/tr>\n
Asus-C21N1504-38Wh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Compatible models<\/h2>\n
\n\n\n\n\n\n\n\n\n
Model<\/th>\n<\/tr>\n<\/thead>\n
Asus E205SA<\/td>\n<\/tr>\n
Asus EeeBook E205SA<\/td>\n<\/tr>\n
Asus Transformer Book Flip TP200SA<\/td>\n<\/tr>\n
Asus Transformer Book Flip TP200SA-EDU<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Introduction<\/h2>\n

Laptop batteries naturally degrade over time, typically lasting 2-4 years with regular use. The ASUS C21N1504 38Wh battery powers several popular ultraportable and convertible models that have been widely adopted by students, professionals, and families across Australia and New Zealand. Understanding when and how to replace your battery can extend your laptop’s lifespan and restore its portability.<\/p>\n

Common signs you need a replacement<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Symptom<\/th>\nCause<\/th>\nVerification<\/th>\nRecommendation<\/th>\n<\/tr>\n<\/thead>\n
Rapid power drain<\/td>\nReduced battery capacity<\/td>\nCheck Windows battery report<\/td>\nReplace if capacity below 60%<\/td>\n<\/tr>\n
Laptop won’t power on without charger<\/td>\nBattery no longer holds charge<\/td>\nRemove charger and try to start<\/td>\nImmediate replacement needed<\/td>\n<\/tr>\n
Battery swelling or bulging<\/td>\nInternal chemical breakdown<\/td>\nVisual inspection of battery compartment<\/td>\nStop using immediately and replace<\/td>\n<\/tr>\n
Overheating during charging<\/td>\nFailing battery cells<\/td>\nMonitor temperature during charge cycle<\/td>\nReplace to prevent damage<\/td>\n<\/tr>\n
Inaccurate battery percentage<\/td>\nFaulty battery controller<\/td>\nCompare system reading with actual runtime<\/td>\nReplace for reliable usage<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

How to check compatibility<\/h2>\n

Before purchasing any replacement battery, verifying compatibility is crucial. For ASUS laptops, start by checking the label on your current battery. It should display the part number (usually starting with letters and numbers like C21N1504 or 0B200-01710100). If you cannot access the battery compartment, check your laptop’s model number on the bottom case or in System Information (press Windows Key + R, type “msinfo32”, and look for System Model). The compatible models listed above are specifically designed for the C21N1504 battery. ASUS Australia’s official support website also provides compatibility checking tools where you can enter your serial number to verify part compatibility.<\/p>\n

When to replace<\/h2>\n

Most laptop batteries need replacement after 300-500 complete charge cycles or when they hold less than 60% of their original capacity. In the Australian climate, heat accelerates battery degradation, so laptops used in warmer regions may need replacement sooner. If your laptop shuts down unexpectedly at 20-30% charge or you’re constantly searching for power points around your home or office, it’s time to consider a replacement. For safety-critical applications or if you rely on your laptop for work or study, replace proactively rather than waiting for complete failure.<\/p>\n

\"ASUS<\/a><\/div>\n

Installation guide<\/h2>\n

Replacing the battery in compatible ASUS models is generally straightforward. First, ensure your laptop is completely powered off and disconnected from any power source. For E205SA and EeeBook models, you’ll typically find the battery compartment on the bottom with several screws securing it. Use the correct screwdriver size to avoid stripping the screws. The TP200SA Transformer Book models may require removing the entire back panel to access the battery. Once opened, carefully disconnect the battery connector from the motherboard – never pull on the wires. Align the new battery properly and reconnect the connector securely. Reassemble your laptop and charge the new battery completely before first use. Always handle lithium-ion batteries with care and avoid puncturing or bending them.<\/p>\n

Usage & care tips<\/h2>\n

To maximise your new battery’s lifespan in Australian conditions, avoid exposing your laptop to extreme temperatures. Don’t leave it in hot cars or direct sunlight for extended periods. Ideal operating temperature is between 10\u00b0C and 35\u00b0C. For daily use, partial discharges are better than full cycles – try to keep your battery between 20% and 80% charge. If you primarily use your laptop plugged in, consider setting a charge limit in ASUS Battery Health Charging software (if available for your model). Calibrate your battery monthly by allowing it to discharge fully then charging to 100% uninterrupted. Store your laptop in cool, dry conditions when not in use for extended periods.<\/p>\n

Get Your Replacement Battery Today<\/a><\/div>\n

Safety & recycling in AU\/NZ<\/h2>\n

Lithium-ion batteries require proper handling and disposal. In Australia, never dispose of laptop batteries in household rubbish. Most councils offer e-waste recycling services, and many electronics retailers like Officeworks and JB Hi-Fi provide battery recycling bins. In New Zealand, check with your local council for e-waste collection days or use dedicated recycling centres. If your battery shows signs of swelling, leaking, or damage, place it in a fire-proof container and take it to a hazardous waste facility immediately. Always transport spare batteries in protective cases to prevent short circuits. Both countries have strict regulations about battery disposal to protect the environment and prevent fire hazards.<\/p>\n

FAQ<\/h2>\n

How long does the ASUS C21N1504 battery typically last?<\/h3>\n

The 38Wh capacity provides approximately 4-7 hours of typical usage depending on your laptop model, screen brightness, and applications running. With normal degradation, expect 2-3 years of reliable performance before noticeable capacity reduction.<\/p>\n

Can I use a higher capacity battery in my ASUS laptop?<\/h3>\n

No, you should only use batteries specifically designed for your model. Higher capacity batteries may not fit physically and could damage your laptop’s charging circuitry. Always match the original specifications.<\/p>\n

Is it safe to replace the battery myself?<\/h3>\n

Yes, for the models listed, battery replacement is designed to be user-serviceable. However, if you’re uncomfortable with the process, authorised ASUS service centres throughout Australia and New Zealand can perform the replacement.<\/p>\n

Will replacing the battery void my warranty?<\/h3>\n

If your laptop is still under manufacturer warranty, check ASUS’s terms. Self-replacement may void warranty, but using genuine replacement parts typically maintains coverage for other components.<\/p>\n

How do I know if my battery is genuine?<\/h3>\n

Genuine ASUS batteries have proper labelling, serial numbers, and come in official packaging. Purchase from authorised retailers or reputable suppliers who guarantee authenticity.<\/p>\n

Can I leave my laptop plugged in all the time?<\/h3>\n

Modern laptops have charging circuits that prevent overcharging, but for optimal battery health, occasional discharge cycles are recommended. Use ASUS Battery Health Charging software if available for your model.<\/p>\n

What should I do with my old battery?<\/h3>\n

Never throw lithium-ion batteries in household waste. Use council e-waste services or retailer recycling programs available throughout Australia and New Zealand. Many communities have specific battery recycling drop-off points.<\/p>\n","protected":false},"excerpt":{"rendered":"

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