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.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
運輸方式
| 運送方式 | 送達國家/地區 | 預計運送時間 | 運費 | 稅金與手續費 |
|---|---|---|---|---|
| USPS / DHL | 美國 | 10-15 個工作天 | 免運 | 免稅 |
| Canada Post | 加拿大 | 10-15 個工作天 | 免運 | 免稅 |
| 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 |
| La Poste | 法國 | 15-20 個工作天 | 免運 | 免稅 |
| Correios | 巴西 | 15-25 個工作天 | 從 $6.99 起 | 免稅 |
| 本地快遞 | 東南亞 / 東亞 | 5-10 個工作天 | 免運 | 免稅 |
| 本地快遞 | 歐洲其他地區 | 20-25 個工作天 | 從 $5.99 起 | 免稅 |
| 本地快遞 | 阿聯酋 / 沙烏地阿拉伯 / 以色列 | 16-20 個工作天 | 從 $7.99 起 | 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.