Description
Product Information
- Item Condition: Brand New
- Capacity: 4400mAh/30Wh
- Output Voltage (Volts): 7.2Volts
- Number of Cells:4 Cells
- Package Included: 1 x Battery for Panasonic
- Warranty: 12 Months / 30-Day Return
Compatible with the following product models(partial list):
Panasonic Lets Note AX2
Panasonic CF-AX2 Series
Panasonic CF-AX3 Series
Panasonic CF-VZSU81 CF-VZSU81EA
Panasonic CF-VZSU81JS CF-VZSU81R
Panasonic CF-VZSU85 CF-VZSU85JS
Precision 30Wh Battery for Panasonic Let’s note CF-AX2 / AX3 Series
Restore the ultra-portable freedom of your convertible laptop with our CF-VZSU81 replacement battery. Tailor-made for the Panasonic Let’s note AX2 and AX3 series, this 30Wh battery features high-density 4-cell technology. Engineered to match the slim profile of the AX chassis, it delivers a consistent 7.2V output, ensuring your device transitions seamlessly between laptop and tablet modes with reliable endurance.
Technical Specifications
| Part Number | CF-VZSU81 / CF-VZSU85 / CF-VZSU81JS |
| Voltage | 7.2 Volts |
| Capacity | 4400 mAh / 30 Wh |
| Cell Configuration | 4-Cell Li-ion Polymer |
| Condition | Brand New |
| Warranty | 12 Months / 30-Day Return |
Verified Device Compatibility
This battery fits the external swappable bay of the AX series. Please confirm your model prefix on the bottom of your laptop.
Compatible Let’s note Models:
- Let’s note CF-AX2 Series
- Let’s note CF-AX3 Series
- CF-AX2ADCTS / CF-AX2QEBJR
- CF-AX3EDCTS / CF-AX3NEABR
Compatible Part Numbers:
CF-VZSU81 | CF-VZSU81JS | CF-VZSU81EA | CF-VZSU81R | CF-VZSU85 | CF-VZSU85JS
Professional Usage Guide
- Hot-Swap Capability: The CF-AX series features a unique dual-battery system (one internal, one external). This CF-VZSU81 is the external removable battery. It can be replaced while the laptop is running, provided the internal bridge battery has sufficient charge.
- Eco-Mode Sync: If your battery stops charging at 80%, this is due to the “Panasonic Battery Eco Mode” software setting. It is designed to extend the lifespan of the lithium cells and is not a hardware fault.
- First Use Tip: For accurate percentage reporting, charge the new battery to 100% and allow it to drain to 10% for the first two cycles. This calibrates the power management chip with the new 4400mAh cells.
Frequently Asked Questions
Q: Will this fit the CF-SX or CF-NX series?
A: No. The SX and NX series use the VZSU75/VZSU76 series batteries, which are physically larger. This battery is strictly for the AX convertible series.
Q: What is the difference between CF-VZSU81 and CF-VZSU85?
A: They are functionally identical and fully interchangeable. The different numbers often represent regional variations (JS for Japan, EA for Europe/North America).
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