Product Overview
This B21N1818-2 replacement battery is organized from the listed product data. Key details include Voltage: 7.6V, Capacity: 32WH, Battery Type: Li-ion. Compatibility includes For Asus VivoBook S14 S412F S412FA S412FJ S412FL S412D S412DA S412DK S412U S412UA Series and For Asus VivoBook 14 A412 A412D A412DA A412DK A412F A412FA A412FL A412FJ A412U A412UA Series and additional models below.
Specs
| Battery model | B21N1818-2 |
|---|---|
| Voltage | 7.6V |
| Capacity | 32WH |
| Battery Type | Li-ion |
| Cell | Made in China |
| Color | Black |
| Condition | Replacement Battery (100% Brand New,1-year warranty!) |
Parts
- C21N1818 B21N1818-2
Models
- For Asus VivoBook S14 S412F S412FA S412FJ S412FL S412D S412DA S412DK S412U S412UA Series
- For Asus VivoBook 14 A412 A412D A412DA A412DK A412F A412FA A412FL A412FJ A412U A412UA Series
- For Asus VivoBook 14 F412 F412D F412DA F412DK F412F F412FA F412FL F412FJ F412U F412UA Series
- For Asus VivoBook 14 R424D R424DA R424F R424FA Series
- For Asus VivoBook 14 X412 X412D X412DA X412DK X412F X412FA X412FJ X412FL X412UA X412U X412UB X412UF X412J X412JA Series
- For Asus V4000 V4000F V4000FJ V4000D
- Notice
- You can open the back of your laptop to check the original battery model number
FAQ
Which battery references should I compare with the original pack?
The listed battery model is B21N1818-2. Other replacement references include C21N1818 B21N1818-2; compare the label on the original battery before ordering.
What electrical specifications does this replacement battery use?
The listed voltage is 7.6V, capacity is 32WH, and battery type is Li-ion. These values should match the original battery requirements.
Which equipment is this battery intended to support?
The product is listed for For Asus VivoBook S14 S412F S412FA S412FJ S412FL S412D S412DA S412DK S412U S412UA Series; For Asus VivoBook 14 A412 A412D A412DA A412DK A412F A412FA A412FL A412FJ A412U A412UA Series. Check the exact device series, battery model and connector position rather than relying only on the brand name.
What should I check before replacing the battery?
Compare the original model number, voltage, capacity, connector and physical fit with the listed specifications. If any key detail differs, confirm compatibility before installation.
注意：
这不是所有兼容笔记本电脑机型的完整列表。您可以打开笔记本电脑的底部来检查原装电池型号。如有任何兼容性问题，请在线咨询我们。外壳采用耐用材料制成，主板采用先进技术，电池芯采用优质原材料生产，确保长期使用后不会损坏。
我们的产品配备过压、过流、过充等多重保护技术，有效保护电池和设备的安全。
配送方式
| 运输方式 | 配送至 | 预计送达时间 | 运费 | 税费 |
|---|---|---|---|---|
| USPS / DHL | 美国 | 10-15 个工作日 | 免费 | 免费 |
| Canada Post | 加拿大 | 10-15 个工作日 | 免费 | 免费 |
| Royal Mail / Yodel | 英国 | 15-20 个工作日 | 免费 | 免费 |
| DHL | 德国 | 15-20 个工作日 | 免费 | 免费 |
| La Poste | 法国 | 15-20 个工作日 | 免费 | 免费 |
| Correios | 巴西 | 15-25 个工作日 | 起 $6.99 | 免费 |
| 本地快递 | 东南亚 / 东亚 | 5-10 个工作日 | 免费 | 免费 |
| 本地快递 | 欧洲其他地区 | 20-25 个工作日 | 起 $5.99 | 免费 |
| 本地快递 | 阿联酋 / 沙特阿拉伯 / 以色列 | 16-20 个工作日 | 起 $7.99 | 免费 |
📦 运输及物流信息
需要更快的运输？ 我们提供本地仓储服务。
请访问我们的 “本地配送” 页面查看可立即发货的商品。
1. 如何追踪包裹：
请根据您的目的地选择对应的追踪链接：
- 欧洲及美洲： 17track.net/en
- 中东地区： mena56.com
- 亚洲： 17exp.kingtrans.cn
需要帮助？
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📱 WeChat/WhatsApp： (+86) 198 6775 1872 / (+86) 191 2767 3310
🚚 预计送达时间
(1) 从中国发货：
- 亚洲：5-20 个工作日
- 北美：10-15 个工作日
- 欧洲/南美：15-20 个工作日
(2) 从本地仓库发货：
- 美国仓库：3-5 个工作日
- 欧洲仓库：2-10 个工作日
- 俄罗斯仓库：3-5 个工作日
注意：具体到达时间取决于不同国家及海关处理速度。
⚠️ 税费及海关信息：
全球产品价格已包含关税（部分国家可能需要提供税号）。具体运费请参考结算发票。如包裹被海关查验，将进行特殊处理。
支付方式
PayPal
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Google Pay
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Apple Pay
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银行转账
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- What Should I Know Before Buying a Laptop Battery Replacement?A: Before buying a laptop battery replacement, confirm your laptop’s exact model number and the part number printed on the original battery. Check the battery voltage, connector, physical dimensions, and compatibility list. Do not choose a battery based on appearance alone, because similar laptop models may use different batteries. Review the seller’s warranty, return policy, and product specifications before ordering.
- How Do I Find a Compatible Laptop Battery for My Device?A: To find a compatible laptop battery, identify your laptop’s full model number and the part number on the original battery. Compare these details with the replacement battery’s compatibility list and specifications, including voltage, connector type, and dimensions. If you are unsure, contact customer support with your laptop model and original battery part number before placing an order.
- Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- Why Is My Laptop Battery Not Charging?A: A laptop battery may not charge because of a faulty AC adapter, damaged charging port, loose connection, temperature protection, battery-health settings, or a worn-out battery. Confirm that you are using a compatible charger and inspect the cable and port for visible damage. Restart the laptop and review the manufacturer’s battery or charging settings. If the battery becomes unusually hot, swollen, or damaged, stop using it and seek professional assistance.
-
Are BatteryMall Laptop Batteries Reliable?BatteryMall laptop batteries are designed with safety and reliability in mind. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating, helping protect the battery during normal use. They are also CE, FCC, and RoHS certified. For the best experience, choose a compatible laptop battery that matches your exact laptop model and original battery part number, and follow the installation and care instructions. BatteryMall also provides a 1-year warranty on KingSener batteries purchased from BatteryMall; see the Product Warranty page for details.