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.
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.
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.
Shipping Methods
| Shipping Methods | Ship To | Est. Delivery Time | Shipping Cost | Taxes & Fees |
|---|---|---|---|---|
| USPS / DHL | United States | 10-15 business days | Free | Free |
| Canada Post | Canada | 10-15 business days | Free | Free |
| Royal Mail / Yodel | United Kingdom | 15-20 business days | Free | Free |
| DHL | Germany | 15-20 business days | Free | Free |
| La Poste | France | 15-20 business days | Free | Free |
| Correios | Mexico/Spain/IT | 15-25 business days | Free | Free |
| Local Carriers | SE Asia / East Asia | 5-10 business days | Free | Free |
| Local Carriers | Rest of Europe | 20-25 business days | From $5.99 | Free |
| Local Carriers | UAE / Saudi Arabia / Israel | 16-20 business days | From $7.99 | Free |
📦 Shipping & Tracking Information
Looking for faster shipping? We offer local warehousing services. Please visit our "Local Delivery" page for items available for immediate dispatch.
1. How to Track Your Package:
Please choose the tracking link that corresponds to your destination:
- Europe & The Americas: 17track.net/en
- The Middle East: mena56.com
- Asia: 17exp.kingtrans.cn
Need Help?
If you cannot find your package on any of the above websites, please contact us immediately.
📧 Email: sales@batterymall.com / info@batterymall.com
📱 WeChat/WhatsApp: (+86) 198 6775 1872 / (+86) 191 2767 3310
🚚 Estimated Delivery Time
(1) Shipping from China:
- To Asia: 5-20 business days
- To North America: 10-15 business days
- To Europe/South America: 15-20 business days
(2) Shipping from Local Warehouses:
- From US Warehouse: 3-5 business days
- From European Warehouse: 2-10 business days
- From Russian Warehouse: 3-5 business days
Please note: Exact arrival times depend on the specific country and customs processing.
⚠️ Tax & Customs Information:
Global product prices include customs duties (some countries require a tax ID). Please refer to the settlement invoice for specific shipping costs. Special handling is required if your package is inspected.
Payment Methods
Paypal
Payments by PayPal, no PayPal account required. Paypal is safe and free for buyers.
PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
Credit or debit card
VISA, MasterCard, the United States n Express,Maestro & Laser Card, APPLE Pay,etc.
PayPal never shares your financial information with us.
WeChat Pay
Currently only supports QR code payment. Please contact WeChat customer service and go to WeChat App to scan the QR code to complete the payment.
Google Pay
Pay with Google Pay, which is more convenient and faster.
Apple Pay
If you use an Apple device, you can use Apple Pay to pay, which is more convenient and faster.
Bank Transfer
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.
