Product Overview
Restore full power to your convertible with the HV03XL replacement battery — a 48Wh Li-ion pack at 11.4V, precision-built for HP x360 310 G2 (K12 Series) laptops. It directly replaces OEM part numbers HV03XL, HSTNN-LB7B, TPN-W112, 818418-421, 817184-005. Grade-A cells and a built-in BMS restore original runtime with reliable charging. Ships 100% brand new with a 1-year warranty.
Specifications
| Attribute | Details |
|---|---|
| Standard Model | HV03XL |
| Capacity | 48Wh |
| Voltage | 11.4V |
| Battery Type | Li-ion |
| Cells | Made in China, high quality guarantee |
| Color | Black |
| Condition | 100% Brand New Replacement Battery |
| Warranty | 1-Year Warranty |
Replace Part Numbers
- HV03XL
- HSTNN-LB7B
- TPN-W112
- 818418-421
- 817184-005
Compatible Models
HP x360 310 G2
- For HP X360 310 G2 K12 Series
FAQ
Does the HV03XL battery fit the HP x360 310 G2?
Yes. The HV03XL is the compatible replacement for the HP x360 310 G2 (K12 Series), replacing HSTNN-LB7B, TPN-W112, 818418-421 and 817184-005.
Is this battery brand new?
Yes, it is 100% brand new with Grade-A cells and built-in overcharge, over-discharge and short-circuit protection.
What warranty is included?
A 1-year warranty is included, with plug-and-play installation and no 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.
China warehouse delivery method
Overseas Warehouse Shipping Times & Costs
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
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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
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Apple Pay
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Bank Transfer
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.
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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.