Sager NP7339 Replacement Battery 11.1V 5200mAh Li-ion
This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.
WECARE5
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Sager NP7339 Replacement Battery 11.1V 5200mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
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.
Sager NP7339 Replacement Battery 11.1V 5200mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
5200mAh
Sager NP7339 — 11.1V Li-ion Replacement Battery
This 11.1V, 5200mAh (57.72Wh) Li-ion battery is a direct cell replacement for the Sager NP7339 notebook. It matches the original connector layout, voltage rail, and BMS handshake protocol. Install it when the factory cell no longer holds sufficient charge to sustain normal use away from the wall.
- NP7339 platform fit: The NP7339 uses an 11.1V three-cell series configuration with a specific BMS communication line. This cell matches that voltage rail and connector pinout, so the BIOS recognises it without error on boot.
- Bench tested on actual hardware: We cycled this cell through full charge and load discharge on the NP7339 platform. The BMS balanced all three cell groups within normal limits and held voltage above the cutoff threshold under sustained CPU and display load.
- First-cycle calibration on the NP7339: After installing, run one complete discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
NP7339 shutting down at 20–30% charge shown
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual capacity curve. The BIOS still references discharge data from the old, degraded cell. Under combined CPU and display load, the real cell voltage drops faster than the old curve predicts, triggering an emergency shutdown. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100% — the fuel gauge IC recalibrates and the shutdowns stop.
BIOS showing battery Wh rating as incorrect after swap
The system reads Wh data from the battery's EEPROM, not from live cell measurement. If the EEPROM-stored value differs from the physical chemistry of the replacement cell, Windows or the BIOS will display a Wh figure that does not match the label. This is a data mismatch — not a fault. The cell operates normally at its rated 57.72Wh capacity. Complete the calibration cycle and the displayed value will settle to the correct figure once the fuel gauge IC writes fresh data.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Sager
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My NP7339 BIOS is flagging the new battery as "poor health" or "unknown" — is the cell faulty?
No. The BIOS pulls health data from the old cell's EEPROM record and compares it against the replacement, which has no discharge history yet. This triggers a false poor-health flag every time a new cell is installed. Run a full discharge to hibernate-cutoff followed by an uninterrupted charge to 100% — the BIOS battery learn cycle will rewrite the health record and the warning clears.
The fuel gauge on my NP7339 jumps around wildly and doesn't reflect actual charge left — what's happening?
The fuel gauge IC inside the laptop calibrates its capacity model against discharge data from the previous cell. With a new cell installed, that model is stale and the percentage reading swings inaccurately for the first few cycles. We see this on the bench every time a fresh cell goes in. Complete two full discharge-to-hibernate cycles with uninterrupted charges to 100% between them — the fuel gauge IC builds a new capacity curve and the readings stabilise.
My NP7339 stops charging at 80% and won't go higher — is this a battery problem?
In most cases, no. The NP7339 BIOS includes a charge-limit setting that caps charging at 80% to reduce cell stress during long periods on AC power. Check the Sager control panel or power management firmware settings and disable the charge threshold limit. Once the limit is off, plug in and let it charge uninterrupted — it should reach 100% at a measured rate consistent with an 11.1V, 5200mAh cell.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Related Products
Engineered for Performance. Built to Last.
Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.
-
Up to 20% offNew arrival
BatteryWeb
Hasee CW23S05 Replacement Battery 11.1V 5200mAh Li-ion
1.05 lb
Sale priceFrom $73.99 USD Regular price $91.99Unit priceIn stock (66 units) -
-
Up to 20% offNew arrival
BatteryWeb
Schenker XMG-A305-4UQ Replacement Battery 11.1V 5200mAh
1.05 lb
Sale priceFrom $73.99 USD Regular price $91.99Unit priceIn stock (66 units) -
-
Up to 20% offNew arrival
BatteryWeb
Terrans Force X311 11.1V Replacement Battery 5200mAh Li-ion
1.05 lb
Sale priceFrom $73.99 USD Regular price $91.99Unit priceIn stock (66 units) -
-
Up to 20% offNew arrival
BatteryWeb
Clevo W230SD 11.1V Replacement Battery 3ICR18/65/-2
1.05 lb
Sale priceFrom $73.99 USD Regular price $91.99Unit priceIn stock (66 units) -
-
Up to 19% offNew arrival
BatteryWeb
Clevo NB50TK1 Replacement Battery 10.8V 4200mAh Li-ion
0.98 lb
Sale priceFrom $77.99 USD Regular price $95.99Unit priceIn stock (24 units) -
-
Up to 19% offNew arrival
BatteryWeb
Hasee DD3 Plus Replacement Battery 10.8V 4200mAh
0.98 lb
Sale priceFrom $77.99 USD Regular price $95.99Unit priceIn stock (24 units) -
-
Up to 19% offNew arrival
BatteryWeb
Cjscope QX-350 RX Replacement Battery 10.8V 4200mAh
0.98 lb
Sale priceFrom $77.99 USD Regular price $95.99Unit priceIn stock (24 units) -
-
Up to 19% offNew arrival
BatteryWeb
Wooking 17T5 Laptop Replacement Battery 10.8V 4200mAh
0.98 lb
Sale priceFrom $77.99 USD Regular price $95.99Unit priceIn stock (24 units) -
