Jumper Ezbook X1 Replacement Battery 7.6V 3300mAh
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Jumper Ezbook X1 Replacement Battery 7.6V 3300mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Jumper Ezbook X1 Replacement Battery 7.6V 3300mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.6V
Amp
3300mAh
Jumper Ezbook X1 — 7.6V Li-Polymer Replacement Battery (2666144)
This is a 7.6V, 3300mAh (25.08Wh) Li-Polymer cell for the Jumper Ezbook X1 ultrabook. It replaces OEM part numbers 2666144 and H-30137162. If the original cell has degraded or failed entirely, this is the direct swap.
- Ezbook X1 fitment: The X1 uses a flat Li-Polymer pack at 7.6V nominal, matched to the board's charge controller and BMS handshake. This cell meets that voltage rail and connector spec. Fitting a different voltage pack will trip the BMS immediately.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on the Ezbook X1 platform. The BMS handshake completed without fault codes, and the charge controller accepted the cell without requiring a firmware bypass.
- Post-install calibration on the Ezbook X1: After fitting, run one full discharge to hibernate-cutoff — let the laptop shut itself down — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle. Skip this step and the health indicator will likely show a false warning for weeks.
Why the Ezbook X1 BIOS reports poor battery health after a cell swap
The Ezbook X1 stores battery health data in EEPROM tied to the original cell. When a new cell is installed, that stored data does not reset automatically — the BIOS compares current readings against stale figures and flags a health warning. This is not a fault with the replacement cell. Running one complete discharge-to-cutoff and uninterrupted charge-to-100% gives the BIOS a fresh data point. After one to two full cycles, the health status clears.
Ezbook X1 shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The gauge was trained on the old, degraded cell and misjudges where the voltage cliff sits on the new one. Under combined CPU and display load, the actual cell voltage drops faster than the gauge predicts, and the protection circuit cuts power before the displayed percentage reaches zero. Let the laptop discharge fully to hibernate-cutoff twice in a row — after those two calibration cycles, the gauge reading and actual cutoff will align. Target resting voltage after a full charge should read 8.55–8.7V at the battery terminals.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Jumper
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The Ezbook X1 BIOS is showing the new battery as "unknown" or giving a 0% reading right after I installed it — is the cell dead?
The cell is not dead. The BIOS is reading stale EEPROM data from the old pack and cannot yet map it to the new cell's chemistry profile. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. That sequence gives the BIOS a fresh baseline and the unknown or 0% status clears within one to two cycles.
My Ezbook X1 shows a completely different Wh rating in system info than what the battery is listed as — why don't the numbers match?
System info pulls the Wh figure from EEPROM data embedded in the battery's fuel gauge IC, which reflects the rated design capacity of the original cell. The replacement cell's actual chemistry may carry a slightly different nominal figure, and until the fuel gauge calibrates against real charge and discharge data, the displayed Wh will not match the label spec. After two full discharge-and-charge cycles, the reported figure will settle closer to 25Wh. No action beyond normal cycling is needed.
The Ezbook X1 stops charging at around 80% and never goes higher — is this a faulty cell?
This is almost always a BIOS-controlled charge limit, not a cell fault. Many ultrabook BIOS versions ship with a charge threshold set to 80% to reduce cell stress during long periods on AC power. Check the Jumper power management settings in the BIOS or any bundled battery utility — there will be a maximum charge limit slider or toggle. Set it to 100% and the cell will charge to full. The cell itself charges to 8.7V when the charge controller allows it.
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