Product Overview
The AP16B4J is a high-performance OEM-grade replacement battery with 37Wh capacity (4870mAh / 7.6V) for the Acer Aspire Switch Alpha 12 SA5-271 Series 2-in-1 convertible laptops. It directly replaces original part numbers AP16B4J and 2ICP4/78/104, restoring factory-level runtime and stable power for study, work and on-the-go use. Compatible with Acer Switch Alpha 12 models SA5-271-5030, SA5-271-707Z, SA5-271-52YL and SA5-271-3981. 100% brand new, rigorously tested and backed by a 1-year warranty. Shipped from our EU warehouse with fast local dispatch for quick delivery across Europe.
Specifications
| Attribute | Details |
|---|---|
| Standard Model | AP16B4J |
| Capacity | 4870mAh / 37Wh |
| Voltage | 7.6V |
| Battery Type | Li-ion |
| Cell | Made in China, high quality guarantee |
| Color | Black |
| Condition | 100% Brand New Replacement (1-Year Warranty) |
| Warranty | 1-Year Warranty |
Replace Part Numbers
- AP16B4J
- 2ICP4/78/104
Compatible Models
- Acer Aspire Switch Alpha 12 SA5-271 Series
- Acer Aspire Switch Alpha 12 SA5-271
- Acer Aspire Switch Alpha 12 SA5-271-5030
- Acer Aspire Switch Alpha 12 SA5-271-707Z
- Acer Aspire Switch Alpha 12 SA5-271-52YL
- Acer Aspire Switch Alpha 12 SA5-271-3981
FAQ
Which Acer laptops does the AP16B4J battery fit?
The AP16B4J fits the Acer Aspire Switch Alpha 12 SA5-271 Series 2-in-1 convertible, including models SA5-271-5030, SA5-271-707Z, SA5-271-52YL and SA5-271-3981. Please check the model code printed on your original battery label to confirm compatibility before ordering.
Is this AP16B4J battery 100% brand new and safe?
Yes — it is 100% brand new with premium Li-ion cells rated at 37Wh (4870mAh / 7.6V) and a built-in BMS protection circuit against overcharge, over-discharge and short circuit, delivering stable power for your convertible.
Do you ship to Europe and how fast is delivery?
Yes — this battery is held in EU stock and ships from our EU warehouse with fast local delivery, so you receive it quickly without long international shipping times.
What warranty is included with the AP16B4J battery?
A 1-year warranty is included with dedicated after-sales support. Installation is plug-and-play with a 1:1 factory fit — no drivers or modification required.
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。
運輸方式
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|---|---|---|---|---|
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| Royal Mail / Yodel | 英國 | 15-20 個工作天 | 免運 | 免稅 |
| DHL | 德國 | 15-20 個工作天 | 免運 | 免稅 |
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銀行轉帳
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- How long does a KingSener battery last?2 to 3 years (approx. 500-800 charge cycles) under normal temperatures.
- Laptop says "Battery Not Detected". How to fix?1. Hard Reset: Unplug AC, remove battery, hold power button for 30 seconds.
2. Clean Contacts: Wipe metal connection pins.
3. Reset Drivers: Uninstall battery drivers in Device Manager, then restart.
4. Update BIOS: Ensure motherboard firmware is up to date. - 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.
- How do I store a laptop battery long-term?Store it at 50% charge in a cool, dry place. Never store at 0% or 100%. Cycle the battery every 3 months to maintain chemical activity.
-
Are KingSener batteries safe?Yes. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating. Fully CE, FCC, and RoHS certified.