BTI R8D7N-BTI 11.4V 51Wh Li-Ion Battery — Replacement Battery for Dell Inspiron 15 7590 2-in-1 and Latitude/Precision Series

Upgrade your portable powerhouse with the BTI R8D7N-BTI 11.4V 51Wh Li-Ion Battery, a reliable, OEM-compatible replacement designed to restore peak performance to your Dell systems. This high-capacity battery delivers longer runtimes, consistent power delivery, and the peace of mind that comes with a quality, tested component built to meet the demands of modern laptops. Whether you’re a student, a professional on the go, or a creative using demanding software, this battery is crafted to keep your Dell Inspiron 15 7590 2-in-1, Latitude 5400/5401/5500/5501, and Precision 3540 ready for work, study, and play. Engineered to fit precisely in the original battery bay, it provides a seamless, plug-and-play replacement option that minimizes downtime and maximizes productivity.

• High-capacity, long-lasting power: With 51Wh of energy and 11.4V performance, this Li-Ion battery is designed to extend your unplugged sessions, letting you work, stream, and create for longer between charges.
• OEM-compatible compatibility: Compatibility codes 0R8D7N, 451-BCIQ, R8D7N, and W8GMW ensure a precise fit for the listed models, maintaining the same form factor and connection layout as the original part.
• Extensive device coverage: Specifically engineered to support INSPIRON 15 7590 2-IN-1, INSPIRON 7590 2-IN-1, LATITUDE 5400, LATITUDE 5401, LATITUDE 5500, LATITUDE 5501, and PRECISION 3540 series, making it a versatile replacement across multiple Dell lines.
• Safety and reliability: Built with high-quality Li-ion cells and integrated protection against overcharge, short circuit, and overheating—providing dependable, stable power in daily use.
• Easy installation and serviceability: Designed as a straightforward replacement that slides into the original battery bay without modification, reducing downtime and preserving device integrity.

Technical Details of BTI R8D7N-BTI 11.4V 51Wh Li-Ion Battery

• Voltage: 11.4V
• Capacity: 51Wh
• Chemistry: Li-ion
• OEM compatibility codes: 0R8D7N, 451-BCIQ, R8D7N, W8GMW
• Model compatibility: INSPIRON 15 7590 2-IN-1, INSPIRON 7590 2-IN-1, LATITUDE 5400, LATITUDE 5401, LATITUDE 5500, LATITUDE 5501, PRECISION 3540
• Part numbers referenced: 0R8D7N, 451-BCIQ, R8D7N, W8GMW
• Form factor: OEM-size replacement compatible with the listed Dell models

how to install BTI R8D7N-BTI 11.4V 51Wh Li-Ion Battery

• Power down the laptop and unplug all power sources. Shut the device completely and allow it to cool if it has been in use.
• Prepare a clean, static-free workspace. Ground yourself to prevent electrostatic discharge by touching a metal surface or using an anti-static wrist strap.
• Remove the back cover: use the appropriate screwdriver to detach the screws securing the bottom panel. Keep screws organized for reassembly.
• Disconnect the old battery connector gently from the motherboard. If the battery is secured by screws, remove them and carefully lift the old unit from its bay.
• Align the BTI R8D7N-BTI battery with the battery bay and connect the connector firmly to the motherboard. Ensure the contacts are fully seated and the battery is oriented correctly.
• Replace the bottom cover and tighten all screws to secure the panel. Reconnect the charger and power on the laptop to verify the new battery is recognized and charging properly.
• Calibrate the new battery: charge to 100% and then discharge to about 5-10% before recharging again. Repeat this cycle a few times to optimize battery reporting and performance.
• Inspect for heat or unusual sounds during initial usage. If any irregularities appear, power down and consult support materials or the seller for guidance.

Frequently asked questions

• Q: What Dell models is this BTI battery compatible with?
  A: It is designed to fit and power the INSPIRON 15 7590 2-IN-1, INSPIRON 7590 2-IN-1, LATITUDE 5400, LATITUDE 5401, LATITUDE 5500, LATITUDE 5501, and PRECISION 3540 families, using the OEM codes 0R8D7N, 451-BCIQ, R8D7N, and W8GMW.
• Q: What is the expected runtime on a full charge?
  A: Runtime varies with usage, brightness, and software. With a 51Wh capacity, typical day-to-day tasks (web browsing, document editing, video playback) can see several hours of unplugged use, while more demanding workloads (gaming, rendering, high-brightness displays) will shorten uptime. Calibrating the battery after installation helps provide the most accurate remaining time readouts.
• Q: Is this battery safe and reliable?
  A: Yes. The BTI R8D7N-BTI battery uses high-quality Li-ion cells and incorporates built-in protection against overcharge, over-discharge, short circuits, and overheating to deliver safer operation across its lifespan.
• Q: Can I install this myself, or do I need a technician?
  A: Most users can perform a standard replacement following the included steps. However, if you are uncomfortable working around your laptop’s internal components, seek professional service to avoid damage.
• Q: Does it require a special tool or software?
  A: No special tools or software are required beyond common household screwdrivers for most models. After replacement, you may need to calibrate the battery for optimal reporting.
• Q: Is there a warranty or support?
  A: Warranty terms depend on the retailer or supplier. Check the product page for the specific warranty coverage and duration associated with this BTI battery.