Medion MD95020 Replacement Battery 14.4V 4400mAh
This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.
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Medion MD95020 Replacement Battery 14.4V 4400mAh - 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.
Medion MD95020 Replacement Battery 14.4V 4400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
14.4V
Amp
4400mAh
Medion MD95020 Series — 14.4V Li-ion Replacement Battery (0299-MP1006J443)
This is a 14.4V, 4400mAh (63.36Wh) Li-ion battery for the Medion MD95020 and related notebooks including the MD96100, MD95309, and MD95155. It replaces a failed or capacity-depleted original pack. Cross-references include BTY-S25, BTY-S27, MS1006, MS1012, and NB-BT002 among others — check your existing battery label before ordering.
- MD95020 and compatible models: These Medion notebooks share the same 14.4V battery rail, physical connector, and BMS handshake protocol across the MD95020, MD96100, MD95309, and MD95155 platforms — which is why one cell covers all of them.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on compatible Medion hardware. The BMS communicated correctly with the system, accepted a full charge without interruption, and held voltage consistently across the discharge curve.
- First-cycle reset procedure: After installing, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that commonly appears after a cell swap on these Medion notebooks.
BIOS reporting poor battery health after installing a new cell
The Medion BIOS reads health data from EEPROM embedded in the battery pack — not from live voltage measurements. When you swap the cell, the BIOS compares the new pack's EEPROM signature against the learned profile from the old, degraded battery. The mismatch triggers a false "replace battery" or "poor health" flag even on a brand-new pack. Running a full discharge-to-hibernate then an uninterrupted charge to 100% forces the BIOS to rewrite its learned profile against the new cell's actual capacity curve.
Laptop shuts down at 20–30% shown on the fuel gauge
This happens when the fuel gauge IC has not yet calibrated against the new cell's chemistry. The IC inherited calibration data from the old, worn pack — so its voltage-to-percentage mapping is off. Under full CPU and display load, actual cell voltage drops below the shutdown threshold while the gauge still reads 20–30%. Two to three full discharge-and-charge cycles recalibrate the IC against the new cell. After calibration, the gauge should track accurately down to the real cutoff near 11.1V under load.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Medion
- 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 Medion notebook shows the new battery as "0% available (plugged in, not charging)" — what's happening?
The BIOS fuel gauge IC is still reading EEPROM data from the old pack and hasn't accepted the new cell's profile yet. Disconnect the AC adapter, let the laptop run on battery until it hits hibernate cutoff, then plug back in and charge uninterrupted to 100%. That single full cycle is usually enough to clear the stale EEPROM handshake and get the charging circuit to recognise the new cell.
Windows is showing the wrong Wh rating for this battery — it says 48Wh but the pack is rated 63.36Wh.
The Wh figure Windows displays pulls from the EEPROM data stored on the battery pack, not from the cells themselves. If the EEPROM was written against a different capacity variant in the same battery family — which happens across the BTY-S25, MS1006, and NB-BT002 cross-reference range — Windows will show the rated Wh from that original write, not the actual cell chemistry. Run a full calibration cycle (discharge to hibernate, charge to 100%) and check the reported value again in powercfg /batteryreport — it will often correct after the learn cycle updates the register.
The new battery charges fine but the fuel gauge jumps around wildly — shows 80%, then 45%, then 70% within minutes.
The fuel gauge IC on these Medion notebooks needs several complete discharge-and-charge cycles to build an accurate model of the new cell's voltage curve. Until it does, voltage readings under varying CPU and display loads translate to erratic percentage jumps. Run three consecutive full cycles — discharge each time to hibernate cutoff at approximately 11.1V, then charge uninterrupted to 100% — and the gauge will stabilise as the IC locks onto the new cell's actual capacity profile.
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