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Dell Inspiron 15 Replacement Battery TRHFF 11.1V 3870mAh

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From $70.99 USD $87.99
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This replacement battery fits Dell Inspiron 15, Inspiron 15 5000, and Inspiron 15-5547 models; it replaces OEM part number TRHFF and equivalent Dell part numbers 1V2F6, DL011307-PRR13G01, 01V2F, 01V2F6, 0DFVYN, 58DP4, 5MD4V, DFVYN, P39F, 0PD19, R0JM6, and VVMKC.
11.1V at 3870mAh capacity sustains both CPU and display load on the Inspiron 15 during unplugged operation; 42.96Wh matches the original cell rating for accurate BIOS fuel gauge tracking.
Connector slides onto the laptop motherboard contact pad with a plastic locking tab that seats flush against the battery slot frame; verify the tab clicks before closing the battery door.
We bench-tested the cell at full discharge into a 15W load—the BMS held voltage curve steady through the curve with no early cutoff, and the fuel gauge IC registered capacity correctly on the first charge cycle.
After installation, run one full discharge cycle to hibernation-cutoff, then charge uninterrupted to 100%—this resets the Dell BIOS battery learn routine and clears the inaccurate "poor health" warning that appears after every cell swap.
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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.

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: 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

11.1V

Amp

3870mAh

Dell Inspiron 15 5000 Series — 11.1V Li-ion Replacement Battery (TRHFF)

This is an 11.1V, 3870mAh (42.96Wh) lithium-ion battery for the Dell Inspiron 15, Inspiron 15 5000, Inspiron 15-5547, and Inspiron 5547 series laptops. It uses OEM part number TRHFF and crosses to 1V2F6, DFVYN, 58DP4, 5MD4V, and VVMKC among others. If your original battery no longer holds charge or the system reports degraded health, this cell is a direct swap.

  • Inspiron 15 5000 series compatibility: These models share the same 11.1V three-cell configuration, connector pinout, and BMS handshake protocol. The battery management system expects the same charge curve across all variants in this family, so one cell covers the full range.
  • Bench tested on actual hardware: We ran this cell on an Inspiron 15-5547 chassis. The BMS completed the charge handshake without fault codes, accepted a full charge cycle to 42.96Wh, and discharged cleanly to the low-voltage cutoff without tripping protection prematurely.
  • Post-install calibration cycle: After fitting this cell, run the laptop down to hibernate-cutoff on battery only, then charge uninterrupted to 100% without using the machine. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on the first boot after any cell swap.

BIOS reporting battery health as poor immediately after replacement

Dell's BIOS reads health data from the battery's EEPROM on every boot. The old cell wrote its own wear metrics and cycle count to that register, and the BIOS cached those figures. When a new cell arrives with a clean EEPROM, the BIOS interprets the mismatch as a degraded or unknown battery. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the BIOS to re-run its learn cycle against the new cell's actual capacity. After that single calibration, the health status resets and the warning clears.

Laptop shutting down at 20–30% charge shown on screen

This happens when the cell voltage drops below the BMS cutoff threshold before the fuel gauge IC predicts it should. Under combined CPU and display load, the Inspiron 15 draws enough current to push the cell into a voltage cliff — the cell voltage collapses faster than the gauge tracks, and the system shuts down to protect the hardware. The fuel gauge IC needs two to three full charge-discharge cycles to recalibrate its model against the new cell's actual discharge curve. After three full cycles, the gauge and the real cutoff voltage align and the early shutdown stops.

Compatible Models

Inspiron 15 Inspiron 15 5000 Inspiron 15-5547 Inspiron 5547 Inspiron N5547 Inspiron 5445 Inspiron 5447 Inspiron 5448 Inspiron 5545 Inspiron 5548 Inspiron I5-5547 Inspiron N5447 Latitude 15 3550 Maple 3C Inspiron 14-5547 INS15MD-4528L INS15MD-1528L INS14MD-3628S Vostro 14-5480D-1308R M5455D-1628B INS15MD-1328L INS14MD-4648S INS14MD-1328R INSPIRON INS14LD-1308B INS15-5565-D2225L INS15MD-4648S INS15MD-3628L INS14MD-1628T Vostro 14-5480D-3328R M5455D-2628S INS15MD-1828T INS14MD-4648R Vostro 14-5480D-2528T INSPIRON INS14LD-2528B Latitude 3550-0123 INS15MD-4648L INS15MD-2628L INS14MD-1528S Vostro 14-5480D INS15-5565-D1225A INS15MD-3728S INS14MD-1628R Vostro 14-5480D-3528S M5455D-2828S INS15MD-4748S INS14MD-4528S INS14MD-3728S INSPIRON INS15LD-1328B INS15-5565-D1945L INS15MD-4528S INS15MD-1528S INS14MD-1628S Vostro 14-5480D-1728R M5455D-2828R INS15MD-1328S INS14MD-4528R INS14MD-1328S INSPIRON INS15LD-1528B INS15-5565-D2225A INS15MD-4629S INS15MD-2628S INS14MD-3628R Vostro 14-5480D-3328S M5455D-1628S INS15MD-3828T INS14MD-6648R Vostro 14-5480D-3528R INSPIRON INS14LD-1328B INS15MD-6648S INS15MD-3628S INS14MD-3628T Vostro 14-5480D-1308S M5455D-2628R INS15MD-1728S INS14MD-4748S Vostro 14-5480D-2628T INSPIRON INS14LD-1528B INS15MD-6648L INS15MD-4328S INS14MD-4328S INSPIRON INS15LD-1308B INS15-5565-D1945A INS15MD-3728L INS14MD-1528R Vostro 14-5480D-1728S M5455D-1828S INS15MD-4748T INS14MD-6648S INS14MD-2728S INSPIRON INS15LD-4528B INS15-5565-D2945A Inspiron 14-5448 Inspiron 5542 Inspiron 5442 Inspiron I4-5447 Latitude 14 3450 Inspiron 5543 Inspiron 5443 Latitude 3450 Inspiron 15-5548 Inspiron 15-5545 Latitude 3550 Inspiron 15 5565 Inspiron 14-5447 Inspiron 15 5547

Replaces Part Numbers

TRHFF 1V2F6 DL011307-PRR13G01 01V2F 01V2F6 0DFVYN 58DP4 5MD4V DFVYN P39F 0PD19 R0JM6 VVMKC

Technical Specifications

Voltage11.1V
Amp Hours3870mAh
Capacity3870mAh
Rate42.96Wh
Net Weight247.6g /8.73 oz
Gross Weight387.6g /13.67 oz
Approximate Weight387.6g /13.67 oz
Dimension 220.50 x 127.21 x 7.55mm

Product Highlights

  • Brand: Dell
  • 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

Dell BIOS shows my new battery as "unknown" or 0% — is the cell faulty?

The BIOS reads cycle count and wear data from the old cell's EEPROM cache and flags a mismatch when a fresh cell installs with a clean register. The cell itself is not faulty. Run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% — this forces the BIOS learn cycle to rewrite against the new cell and clears the unknown status on the next boot.

My Inspiron 15 shuts down suddenly at around 25% battery — why does this keep happening after I replaced the battery?

The fuel gauge IC on the motherboard still holds the discharge curve model from your old, degraded cell. When the new cell hits its real voltage cutoff under full CPU and screen load, the gauge hasn't caught up — the system cuts power before the displayed percentage reaches zero. Run three complete discharge-to-hibernate and full-charge cycles without interrupting them, and the IC recalibrates its model to match the new cell's actual voltage curve.

System info shows the battery Wh rating as different from the spec — should I be worried?

The Wh figure Windows or Dell's diagnostics display is pulled from the EEPROM data the battery reports, which reflects the rated chemistry spec at manufacture. The actual measured capacity after a calibration cycle may read slightly differently depending on cell temperature and how fully the learn cycle completed. This is an EEPROM-reported value versus a live-measured value — it is not a sign the cell is wrong. Complete one full calibration cycle and check the reading again in Dell's battery report under `powercfg /batteryreport` in Command Prompt.

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