Lenovo ThinkPad E14 Gen 6 11.4V Replacement Battery 5B11K63020
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 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.
Lenovo ThinkPad E14 Gen 6 11.4V Replacement Battery 5B11K63020 - 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.
Lenovo ThinkPad E14 Gen 6 11.4V Replacement Battery 5B11K63020 - is backordered and will ship as soon as it is back in stock.
Voltage
11.4V
Amp
4500mAh
Lenovo ThinkPad E14 Gen 6 — 11.4V Li-Polymer Replacement Battery (5B11K63020)
This is an 11.4V, 4500mAh (51.3Wh) Li-Polymer battery for the Lenovo ThinkPad E14 Gen 6 and ThinkPad E16 Gen 1 series laptops. It replaces a degraded or failed original cell so the machine runs on battery power again. Voltage, connector pinout, and BMS handshake match the original Lenovo specification.
- ThinkPad E14 Gen 6 and E16 Gen 1 platform fit: Both series share the same 11.4V three-cell Li-Polymer architecture, identical connector, and the same EEPROM-based fuel gauge protocol. One battery covers both lines without modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a ThinkPad E14 Gen 6 unit. The BMS accepted the handshake without fault codes, and the EC reported correct voltage at each charge stage through to full termination.
- BIOS learn cycle after installation: After fitting this battery, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the ThinkPad firmware triggers after every cell swap.
Why the ThinkPad E14 Gen 6 reports poor battery health immediately after a cell swap
The ThinkPad EC reads health data from EEPROM registers on the battery — cycle count, full-charge capacity, and rated Wh. A new cell ships with factory-default register values that don't match the learned data the EC had stored for the old battery. The firmware interprets that mismatch as a degraded or unknown cell and flags poor health in Vantage and BIOS. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% allows the EC to write new baseline data to those registers and clear the warning.
ThinkPad shutting down abruptly at 20–30% charge shown
This happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. The new cell hits a voltage cliff under combined CPU and display load at a point the IC hasn't yet learned to map correctly. The displayed percentage doesn't reflect the actual remaining voltage, so the laptop cuts out before the gauge reaches zero. Run two or three full discharge and charge cycles to let the fuel gauge IC recalibrate against the new cell — after that, shutdowns should align with the displayed percentage reaching the low-battery threshold, typically around 5%.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Lenovo
- 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
My ThinkPad E14 Gen 6 now shows the wrong Wh rating in the system info after fitting the new battery — is something wrong with the cell?
Nothing is wrong with the cell. The Wh figure shown in Windows battery report or Lenovo Vantage is read from the EEPROM on the battery pack, not measured in real time. A new cell ships with factory-default EEPROM values that may differ from what the old pack had written after months of learned cycles. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%, and the EC will rewrite the register with updated capacity data. After that cycle, the reported Wh should align with the rated 51.3Wh.
The fuel gauge on my ThinkPad jumps around wildly — it read 60%, then 45% five minutes later without heavy use. What's happening?
The fuel gauge IC uses a model built on discharge data from the previous cell. After a swap, it has no accurate reference curve for the new cell, so percentage estimates are unstable for the first few cycles. This is a calibration gap, not a fault with the battery. Run three full discharge-to-hibernate and uninterrupted charge-to-100% cycles, and the IC will rebuild its curve against the new cell's actual voltage profile.
New battery installed but the ThinkPad won't charge past 80% — is the cell defective?
Almost always this is the BIOS charge threshold, not the cell. Lenovo firmware includes a conservation mode that caps charging at 80% to reduce long-term cell stress. Check Lenovo Vantage under Power → Battery Charge Threshold and confirm conservation mode is off. If it was off and the charge still stops at 80%, enter the BIOS, navigate to Config → Power, and verify the charge limit is set to 100%. The cell itself will accept charge to full — the cutoff is firmware-controlled.
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 19% offNew arrival
BatteryWeb
Hasee 7G X3P Compatible Battery 14.8V 2600mAh 916Q2232H
1.06 lb
Sale priceFrom $71.99 USD Regular price $88.99Unit priceIn stock (57 units) -
-
Up to 19% offNew arrival
BatteryWeb
Shinelon A40D-345HN Replacement Battery 14.8V 2600mAh
1.06 lb
Sale priceFrom $71.99 USD Regular price $88.99Unit priceIn stock (57 units) -
-
Up to 19% offNew arrival
BatteryWeb
LG 15N365-K Replacement Battery 14.8V 2600mAh Li-ion
1.06 lb
Sale priceFrom $71.99 USD Regular price $88.99Unit priceIn stock (57 units) -
-
Up to 19% offNew arrival
BatteryWeb
Haier 7G-5H Replacement Battery 14.8V 2600mAh 91672232H
1.06 lb
Sale priceFrom $71.99 USD Regular price $88.99Unit priceIn stock (57 units) -
-
Up to 19% offNew arrival
BatteryWeb
Lenovo Legion Go 8APU1 Replacement Battery 7.82V 10200mAh
0.68 lb
Sale priceFrom $76.99 USD Regular price $94.99Unit priceIn stock (60 units) -
-
Up to 19% offNew arrival
BatteryWeb
HP ZBook Fury 15 G7 AL08XL Replacement Battery 15.44V 91.1Wh
1.37 lb
Sale priceFrom $81.99 USD Regular price $100.99Unit priceIn stock (21 units) -
-
Up to 19% offNew arrival
BatteryWeb
Lenovo 5B11M74074 Laptop Compatible Battery 11.31V 5000mAh
1.07 lb
Sale priceFrom $61.99 USD Regular price $76.99Unit priceIn stock (60 units) -
-
Up to 19% offNew arrival
BatteryWeb
HP Book Pro 16 Replacement Battery 7.72V 8300mAh HSTNN-WB0F
1.09 lb
Sale priceFrom $81.99 USD Regular price $100.99Unit priceIn stock (60 units) -
