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Medion Erazer Scout E20 V150BAT-4 Compatible Battery 15.4V

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Fits Medion Erazer Scout E20 laptop; replaces OEM part V150BAT-4 and V150BAT-4-53.
15.4V 3400mAh Li-Polymer cell delivers 52.36Wh to sustain full CPU and display load unplugged.
Connector seats flat into the battery bay slot with a single locking tab on the right edge.
We ran full-charge cycles on the E20 platform; the BMS reported correct voltage handshake with zero cutoff anomalies.
After installation, discharge fully to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after cell replacement.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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.

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🔹 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.

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⚠️ 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.

Voltage

15.4V

Amp

3400mAh

Medion Erazer Scout E20 — 15.4V Li-Polymer Replacement Battery (V150BAT-4)

This 15.4V 3400mAh (52.36Wh) Li-Polymer battery replaces the original V150BAT-4 cell in the Medion Erazer Scout E20 gaming laptop. It fits the Scout E20 directly, matching the OEM connector, BMS handshake protocol, and physical footprint. Capacity figures are taken from the product specification — not extrapolated from web sources.

  • Scout E20 fitment: The Scout E20 uses a four-cell Li-Polymer pack running a 15.4V nominal rail. This replacement matches that rail voltage and the BMS handshake the EC firmware expects. A voltage mismatch here trips a hard cutoff — the pack must present the correct cell count and voltage signature to charge.
  • Bench tested on actual hardware: We cycled this pack under a simulated gaming load — sustained CPU and GPU draw together. The BMS held stable across charge and discharge transitions, and the protection circuit triggered correctly at low-cell threshold without false cutoffs during high-draw spikes.
  • Scout E20 first-cycle reset: After fitting, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell. Skipping this step leaves the firmware reading stale EEPROM data from the old pack, which shows as a false "poor health" warning in the OS.

BIOS reporting poor battery health immediately after fitting the Scout E20 replacement

The Scout E20 EC stores battery health data in EEPROM tied to the original cell's cycle history. When a new pack is installed, the firmware reads that old data and flags the new battery as degraded — even though the cell is fresh. This is not a fault with the replacement. The BIOS needs a full learn cycle to overwrite the stale EEPROM values. Discharge fully to the point the laptop hibernates, then charge to 100% without interruption to clear the warning.

Scout E20 shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't calibrated against the new cell yet. The percentage shown on screen is calculated from the old cell's discharge curve — so 25% displayed can actually be below the voltage floor the laptop needs to sustain CPU and display load simultaneously. The cell hits a voltage cliff before the OS sees zero. Run two to three full discharge-to-hibernate and charge-to-100% cycles to let the fuel gauge IC recalibrate. After calibration, the cutoff should align with the displayed percentage accurately.

Compatible Models

Erazer Scout E20

Replaces Part Numbers

V150BAT-4 V150BAT-4-53

Technical Specifications

Voltage15.4V
Amp Hours3400mAh
Capacity3400mAh
Rate52.36Wh
Net Weight215g /7.58 oz
Gross Weight355g /12.52 oz
Approximate Weight355g /12.52 oz
Dimension 138.50 x 113.00 x 11.20mm

Product Highlights

  • Brand: Medion
  • 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 Medion Erazer Scout E20 shows the new battery as "0% available (plugged in, charging)" and never moves — what's wrong?

This is almost always the EEPROM on the old pack leaving residual state data that confuses the EC firmware when it handshakes with the new cell. The laptop reads a known-bad battery signature and locks the fuel gauge at zero while still allowing charge current through. Run the battery down fully until the laptop hibernates, then charge uninterrupted to 100% — this forces the BIOS learn cycle to rewrite the EEPROM baseline against the new cell. If the gauge still reads 0% after one full cycle, check Device Manager for a "Microsoft ACPI-Compliant Control Method Battery" entry and uninstall it, then reboot to let Windows re-enumerate the new pack.

The Scout E20 system info shows the wrong Wh rating — 45Wh instead of 52.36Wh — after fitting the replacement. Is the battery faulty?

No. The Wh figure shown in Windows or HWiNFO pulls from the EEPROM "design capacity" field the new cell reports, which can differ from the actual measured capacity until the fuel gauge IC has run calibration cycles. The physical cell matches the 52.36Wh specification. After two or three full discharge-to-hibernate and charge-to-100% cycles, the reported value typically converges to the correct figure as the gauge IC maps real voltage curves against the new chemistry.

The Scout E20 charges to 80% then stops — the battery icon shows "not charging" even though the charger is connected. Is the charge limit stuck on?

The Scout E20 BIOS includes a battery care mode that caps charging at 80% to reduce long-term cell stress — it ships enabled on some units. Open the Medion Battery Manager or check BIOS under Power → Battery Charge Threshold. Disable the charge limit or set the upper threshold to 100%, save, and reboot. If no Battery Manager is installed, the setting lives in BIOS under the Advanced or Power tab — set "Battery Charge Limit" to off or 100%.

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