BTI M5Y1K-BTI 14.4V 40Wh Li-Ion Notebook Battery

Power your Dell Inspiron and Vostro notebooks with confidence using the BTI M5Y1K-BTI 14.4V 40Wh Li-Ion Notebook Battery. This reliable replacement battery is engineered to meet or exceed OEM performance, delivering steady, dependable power for everyday work, travel, and study. With a robust 14.4V design and a 40Wh capacity, it strikes a balance between run time and weight, helping you extend unplugged use without adding unnecessary bulk to your device. Built with high-quality Li-Ion cells and intelligent protection circuitry, this battery guards against overcharge, over-discharge, short circuits, and thermal events, safeguarding both your laptop and your data. The BTI M5Y1K-BTI battery is designed for broad compatibility across a spectrum of Dell Inspiron models (including 3451, 3452, 3458, 3462, 3467, 3551, 3552, 3558, 3559, 3565, 5451, 5452, 5455, 5458, 5459, 5551, 5552, 5555, 5558, 5559, 5755, 5758, 5759) and Vostro 14 series (such as 3458, 3459, 3558, 3559). It is a thoughtful choice for anyone seeking a dependable, long-lasting battery replacement that preserves the mobility you rely on.

• The BTI M5Y1K-BTI 14.4V 40Wh Li-Ion Notebook Battery delivers strong runtime for daily tasks, streaming, coding, and light gaming, letting you work longer between charges. Its 14.4-volt configuration is tuned to match the OEM power profile of supported Dell Inspiron and Vostro models, helping your laptop perform at its best with a stable voltage supply and consistent discharge curves.
• Designed for broad compatibility, this battery supports a wide range of Dell Inspiron models (3451, 3452, 3458, 3462, 3467, 3551, 3552, 3558, 3559, 3565, 5451, 5452, 5455, 5458, 5459, 5551, 5552, 5555, 5558, 5559, 5755, 5758, 5759) as well as Vostro 14 series (3458, 3459, 3558, 3559). It also references multiple compatible SKU identifiers (0VM3M0, 0VN3N0, 451-BBMG, 451-BBUD, 453-BBBQ, 453-BBBR, 453-BBBT, HD4J0, M5Y1K, W6D4J, WKRJ2), making it a versatile choice for users seeking a unified replacement option across several laptops.
• Safety and reliability come first with built-in protection features that guard against overcharge, over-discharge, short-circuiting, and overheating. The battery’s smart circuitry communicates with your laptop to optimize charging, prevent damage, and extending the overall lifespan of the cell pack. This translates into safer handling, peace of mind, and fewer unexpected shutdowns during critical tasks.
• Quality construction using premium Li-Ion cells ensures stable performance and consistent capacity across the life of the battery. By maintaining a steady energy output, this BTI battery helps preserve system responsiveness, reduces the risk of power drops during demanding applications, and contributes to smoother multitasking.
• Warranty and support you can rely on: the BTI M5Y1K-BTI comes with an 18-month manufacture warranty and USA-based customer service, giving you accessible assistance for installation questions, compatibility checks, or any concerns about performance. This support scope makes it a practical long-term replacement that you can trust for both professional and personal use.

Technical Details of BTI M5Y1K-BTI 14.4V 40Wh Li-Ion Notebook Battery

• Voltage: 14.4V
• Capacity: 40Wh
• Chemistry: Li-Ion
• Battery Type: Notebook Battery (replacement)
• Model/Part: BTI M5Y1K-BTI
• SKU references: 0VM3M0, 0VN3N0, 451-BBMG, 451-BBUD, 453-BBBQ, 453-BBBR, 453-BBBT, HD4J0, M5Y1K, W6D4J, WKRJ2
• Compatibility: Dell Inspiron models 3451, 3452, 3458, 3462, 3467, 3551, 3552, 3558, 3559, 3565, 5451, 5452, 5455, 5458, 5459, 5551, 5552, 5555, 5558, 5559, 5755, 5758, 5759 and Vostro 14 series (3458, 3459, 3558, 3559)

How to Install BTI M5Y1K-BTI 14.4V 40Wh Li-Ion Notebook Battery

• Power off your laptop completely and unplug the AC adapter. Close the lid and flip the device over to access the battery compartment.
• Remove the back cover screws with a suitable screwdriver and carefully lift the panel to expose the battery, taking care not to pull on any internal cables.
• Disconnect the existing battery by releasing the connector from the motherboard, then remove the old pack from the chassis.
• Align the BTI M5Y1K-BTI replacement battery with the connector and seating posts in the battery bay. Gently press until you feel it click into place and verify the battery is seated evenly.
• Reconnect the battery connector to the motherboard and replace the back cover. Reinstall screws securely, reconnect the power adapter, and boot the laptop to confirm proper operation. If prompted, run a battery health check in your operating system to confirm the new pack is recognized.
• Charge fully before heavy use and perform a few calibration cycles by letting the battery run from full to empty and back to full to help the system accurately estimate runtime. Dispose of old batteries responsibly per local regulations.

Frequently asked questions

• Q: Will this battery fit my Dell Inspiron or Vostro model?
• A: The BTI M5Y1K-BTI is designed as a replacement for a wide range of Dell Inspiron and Vostro 14-series notebooks, including many 345x, 355x, 545x, 555x, and 575x models as listed in the compatibility notes. If your model falls within the documented compatibility range and uses a 14.4V, 40Wh Li-Ion pack, this battery is likely a suitable replacement.
• Q: What is the runtime you can expect from this battery?
• A: Real-world runtimes vary based on usage, screen brightness, and power settings. With a 40Wh capacity, you can expect hours of typical productivity tasks such as browsing, document editing, and streaming, with longer sessions possible on lighter workloads. Enabling power-saving features can extend runtime further.
• Q: Does this battery include safety features?
• A: Yes. The BTI M5Y1K-BTI includes smart protection mechanisms for overcharge, over-discharge, short circuits, and thermal conditions to help protect your device and the battery’s longevity while maintaining safe operation.
• Q: What warranty accompanies this battery?
• A: The battery ships with an 18-month manufacture warranty and access to USA-based customer service for support, installation guidance, and troubleshooting. This helps ensure you can rely on your replacement over time.
• Q: How should I dispose of my old battery?
• A: Do not throw lithium-ion batteries in regular trash. Recycle through local e-waste programs or return-to-retailer programs where available. Proper disposal helps protect the environment and may offer battery recycling rewards in some regions.