BTI44Wh ThinkPad Battery Replacement For T550 T560 W550
SKU: 43961779098

BTI44Wh ThinkPad Battery Replacement For T550 T560 W550

Sale price$111.24 Regular price$123.60
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

BTI44Wh ThinkPad Battery Replacement For T550 T560 W550Keep your ThinkPad running longer between charges with the BTI Battery, a premium drop in replacement designed for popular Lenovo models. This 44 Wh Lithium Ion (Li Ion) battery delivers dependable power for ThinkPad T550, T550S, T560, W550, and W550S laptops, using OEM compatible dimensions and a proprietary size that ensures a tight, secure fit. Built to mirror the performance and reliability of the original battery, the BTI Battery is ideal for

Keep your ThinkPad running longer between charges with the BTI Battery, a premium drop-in replacement designed for popular Lenovo models. This 44 Wh Lithium Ion (Li-Ion) battery delivers dependable power for ThinkPad T550, T550S, T560, W550, and W550S laptops, using OEM-compatible dimensions and a proprietary size that ensures a tight, secure fit. Built to mirror the performance and reliability of the original battery, the BTI Battery is ideal for traveling professionals, students, and power users who demand consistent uptime without compromising safety or compatibility.

  • Seamless compatibility and precise fit: Engineered as a direct replacement for the Lenovo OEM parts 45N1743, 45N1742, 45N1741, and 45N1740, this BTI Battery slides into the battery bay of ThinkPad T550, T550S, T560, W550, and W550S with no modification required. It delivers the same connector interface and discharge characteristics, ensuring dependable performance and plug-and-play convenience for busy users who value efficiency and reliability.
  • High-capacity power for extended use: With a 44 Wh energy rating, the BTI Battery provides longer runtime between charges, helping you stay productive through longer work sessions, flights, or classroom days. This capacity is especially beneficial for professionals who run multiple applications, streams, or data-heavy tasks, reducing the need for frequent recharges during critical moments.
  • Advanced Li-Ion chemistry for steady performance: Built on Lithium Ion (Li-Ion) chemistry, this battery delivers consistent voltage delivery and stable energy output over its cycle life. Li-Ion cells are known for low self-discharge, reliable performance at varying temperatures, and a practical balance between weight and energy density—ideal for ultraportable ThinkPad configurations used in everyday business, education, and personal computing tasks.
  • Proprietary size for secure installation: The BTI Battery uses a proprietary battery size that’s tailored to the ThinkPad battery compartment, providing a snug, secure fit and dependable contact with the motherboard. This design minimizes wobble, prevents loose connections, and ensures safe operation during travel or impact, so you can rely on steady performance in daily use or on the move.
  • Safety-focused design and reliability: Built with protective features intended to guard against common battery issues—overcharge, short-circuit, and thermal risks—the BTI Battery helps protect both the battery and your laptop. With high-quality cells and careful engineering, this replacement battery supports safe charging, storage, and operation, giving you peace of mind whether you’re commuting, presenting, or working remotely.

Technical Details of BTI Battery

  • Battery chemistry: Lithium Ion (Li-Ion)
  • Capacity: 44 Wh
  • Compatible OEM numbers: 45N1743, 45N1742, 45N1741, 45N1740
  • Compatible models: ThinkPad T550, T550S, T560, W550, W550S
  • Form factor: Proprietary battery size

How to install BTI Battery

  • Power down your laptop completely and unplug all power sources before starting the replacement.
  • Close the lid, flip the device over, and remove the screws securing the back cover. Use proper tools and work on a clean, static-free surface.
  • Carefully lift the back cover to expose the battery bay, then disconnect the current battery connector from the motherboard and release any battery release latches.
  • Remove the old battery and align the BTI Battery with the battery bay, ensuring the connector line up with the motherboard socket. Connect the new battery’s cable firmly and place it securely into the bay.
  • Reattach the back cover and screws, then plug in the AC adapter and power on the laptop. Allow the battery to self-calibrate by charging to 100% before normal use and avoid heavy discharge cycles during the first few charging sessions.
  • If your device requires a calibration routine, follow your ThinkPad’s user manual for optimized battery reporting and longer-term accuracy of charge indication.

Frequently asked questions

  • Q: Is the BTI Battery a direct replacement for OEM parts?

    A: Yes. The BTI Battery is designed as a drop-in replacement for Lenovo OEM numbers 45N1743, 45N1742, 45N1741, and 45N1740, and it fits compatible ThinkPad models including T550, T550S, T560, W550, and W550S without circuit or connector modification.

  • Q: What runtime can I expect with the 44 Wh capacity?

    A: Runtime varies based on usage, settings, and workload. Heavier tasks like media editing or gaming will drain the battery faster, while mixed productivity tasks and light browsing will extend the period between charges. The 44 Wh rating is designed to offer a solid balance of portability and endurance for typical day-to-day work.

  • Q: Is Li-Ion the best choice for this ThinkPad battery?

    A: Lithium Ion (Li-Ion) is a common, reliable chemistry for notebook batteries, offering good energy density, lower weight, and effective cycle life when used within recommended temperature ranges. It provides stable power delivery and minimal memory effect, making it a dependable choice for ThinkPad replacements.

  • Q: How should I care for my BTI Battery after installation?

    A: For best results, avoid exposing the battery to extreme temperatures, store the device in a cool, dry place, and perform regular cycles of charging and discharging in typical usage. Keep the firmware and BIOS of your ThinkPad updated to maintain accurate battery reporting and charging behavior.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43961779098

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 80 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Al Bud
Bozeman, US
★★★★★ 5
Beautiful Quality Designed Necklace.
Color: Silver
Absolutely gorgeous necklace for a women and teenager. This is beautiful and the size works perfectly. Definitely a quality design for any person to wear. The price is excellent and worthy of a gift to anyone. The person receiving it will appreciate the high quality and beautiful necklace. Highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
B
Verified Purchase
Barry Gilgen
Lexington, US
★★★★★ 5
good product
Color: Gold+Silver
fits wife fine and looks good she loves it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
D
Verified Purchase
Diandra L McDowell
Draper, US
★★★★★ 5
No complaints, compliments all the time
Color: rose gold
Beautiful necklace. love the floating butterfly. Rose Gold is my new Gold. back to what I use to wear when I was younger. keeps well doesn't discolor. I shower and bathed in it no issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
N
Verified Purchase
Nyejak
Dallas, US
★★★★★ 4
Cute .
Color: rose gold
Really cute . Im not sure if it turned because I got it as a gift . Light weight . And small but perfect size small .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2026
T
Verified Purchase
TStitious17
Pawtucket, US
★★★★★ 5
Wonderful piece of jewelry
Color: rose gold
Beautiful piece, larger than expected. Thought this was going to be very dainty, but it is very, very nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026

recommand products