Pay in installments of $29.88 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Makita 18V LXT Lithium-Ion Starter Pack with Two 4.0Ah Batteries and Charger BL1840BSC2 Power 325+ Tools with Star Protection LED GaugePower Your Entire Makita LXT Cordless System Build or expand your professional cordless tool system with the Makita 18V LXT Lithium Ion Battery and Charger Starter Pack (BL1840BSC2). This kit is the perfect starting point, providing the essential power for Makita's expansive lineup of over 325 LXT cordless tools. It's the most cost effective way to start building your kit, especially when purchasing "bare tools" (tool only) and 18V X2 LXT tools that
Power Your Entire Makita LXT Cordless System
Build or expand your professional cordless tool system with the Makita 18V LXT® Lithium-Ion Battery and Charger Starter Pack (BL1840BSC2). This kit is the perfect starting point, providing the essential power for Makita's expansive lineup of over 325 LXT cordless tools. It's the most cost-effective way to start building your kit, especially when purchasing "bare tools" (tool only) and 18V X2 LXT® tools that run on two batteries for 36V power.
The two included 18V LXT® 4.0Ah batteries (BL1840B) give you up to 35% more run time per charge compared to 3.0Ah batteries, minimizing downtime. Each battery features an integrated L.E.D. charge level indicator and delivers consistent power and run time, even in extreme winter temperatures (-4°F/-20°C). The Standard Charger communicates with the battery's built-in chip to optimize battery life by actively controlling current, voltage, and temperature. This system, combined with Star Protection Computer Controls™, protects your batteries from overloading, over-discharging, and overheating, ensuring maximum life and performance.
Key Features
- Extended Run Time: Provides up to 35% more run time per charge compared to the Makita 3.0Ah battery (BL1830).
- Fast Charging: The 18V LXT® 4.0Ah battery reaches a full charge in approximately 90 minutes.
- On-Board LED Indicator: Integrated L.E.D. battery charge level indicator allows you to monitor the charge at a glance.
- Star Protection: Equipped with Star Protection Computer Controls™ to protect against overloading, over-discharging, and overheating.
- All-Weather Performance: Battery delivers consistent power and run time in extreme temperatures, even in winter (-4°F/-20°C).
- Durable Construction: Impact-resistant outer case and a shock-absorbing inner-liner are engineered to protect the battery from job site abuse.
- Secure Connection: Features sixteen contact terminals to maintain a constant connection with the tool, preventing power loss during high-vibration applications.
- Low Self-Discharge: Battery resists self-discharge and remains ready for use even after long periods of storage.
What's Included
- (2) 18V LXT® Lithium-Ion 4.0Ah Batteries (BL1840B)
- (1) 18V LXT® Standard Lithium-Ion Charger (DC18SD)
Specifications
| Brand | Makita |
| Model Number | BL1840BSC2 |
| System | 18V LXT® |
| Battery Type | Lithium-Ion |
| Battery Amp-Hour | 4.0Ah |
| Battery Model | BL1840B |
| Charger Model | DC18SD (Standard) |
| Charge Time (4.0Ah) | Approx. 90 minutes |
| Kit Weight | 5.15 lb |
| Package Depth | 9.5 in |
| Package Height | 3.5 in |
| Prop 65 | Yes |
| UPC | 197050359698 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 25 reviews
Sort
Product Reviews
★★★★★ 5
Excellent book to truly understand LLM design patterns
Format: Paperback
I just finished reviewing Ken Huang's pocket book on LLM Design Patterns, and WOW what an amazing resource! This book is excellent if you want to truly understand how to create and enhance intelligent AI language models, all that in your pocket!
Ken makes the difficult things seem surprisingly easy, and that's the real MAGIC.
- How to prepare your data for training by making it extremely clean.
Developing the brains: the practical aspects of training, optimizing, and maintaining your models.
- Learn amazing prompting techniques (such as Chain-of-Thought and Tree-of-Thoughts) to improve your AI's reasoning and problem-solving abilities.
Learn everything there is to know about RAGs so that your LLM can incorporate outside expertise.
- It also delves into creating "agentic" AI that is capable of action and planning (not only simple plan and execute but also enhanced techniques like ReWoo!)
Really, this feels like a useful toolkit, so Ken thank you for that resource
Thanks, Idan Habler
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2025
★★★★★ 3
A Broad Overview, But Light on Modern Fine-Tuning
Format: Paperback
I'm currently really interested in fine-tuning LLMs and recently completed my first LoRA-based fine-tuning on a quantized model. I came to this book looking for more detail on fine-tuning. While it touches on the topic, I found the content didn’t quite align with the current state of the field in 2025. Techniques like LoRA, QLoRA, and PEFT weren’t really covered, and the material leaned more toward what I think are older or lower level approaches. That made it harder to connect with what I’m actually working on.
That said, when I shifted to other chapters — like the sections on prompt engineering techniques such as Chain of Thought (CoT) and Tree of Thought (ToT) — I found more value. These sections were clearer, and I picked up a few practical insights, like using few-shot examples that walk through the CoT reasoning process. That’s not something I’ve tried before, and I can see how it might help smaller models that struggle with any type of reasoning tasks.
Overall, the book feels more like a broad overview of all LLM concepts. For someone exploring many topics across the LLM ecosystem, it offers a wide-ranging introduction. But for readers like me who are actively trying to learn and apply techniques like fine-tuning and quantization, it may leave you wanting up-to-date guidance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 10, 2025
★★★★★ 5
Great foundation read for security!
Format: Paperback
This book is a great read! It builds a strong foundation and I would highly recommend it for builders who are interetsed in building on LLMs and ensuring everything is secure. Security is super important and this book does it justice!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 27, 2025
★★★★★ 5
Loved it
Format: Paperback
I’ve easily read dozens of tech books. I liked this one a lot. Sure, there were boring parts, but most of it was engaging, especially on dry subjects. I previously read “How AI Works” and found this more informative and way more enjoyable. I got through the 700 pages in about 5 weeks while also learning about probability and linear algebra from other books and online sources. I’d love to read something more advanced by the author, maybe getting into more modern applications. I feel more comfortable with the subject and feel I am now ready to conquer more advanced texts. I initially picked this up to give me some background before reading “How to Build a LLM (from scratch)”. I’ve ordered an intermediary Deep Learning with Python book as well, but wouldn’t mind a more advanced theory book to accompany these books. I’ll definitely be rereading sections of this book to further familiarize myself with topics like backpropagation. Highly recommend if you’re looking for a gentle, but broad introduction to the topic.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
★★★★★ 5
A Good Place to Start Learning AI
Format: Paperback
Diving into the world of artificial intelligence can feel like stepping into a vast, uncharted ocean, and if you're looking for a reliable vessel to navigate these waters, this book is an excellent choice. However, I must be candid—this journey is not for the faint-hearted or those hoping to breeze through. The subject of AI, with its complex algorithms and intricate theories, is notoriously challenging. You won't find yourself flipping pages at a rapid pace, as this is not a title designed for speed-reading. Instead, it demands your full attention and a willingness to engage deeply with the material.
At the heart of AI lies mathematics—a fundamental pillar that underpins the entire discipline. This book, while comprehensive, offers only a glimpse into the mathematical framework that drives artificial intelligence. But don’t be disheartened by this. Think of it as a solid foundation, a primer that will arm you with the essential concepts needed before you delve deeper into the more advanced mathematical intricacies elsewhere. When you do eventually tackle those more complex equations, you'll find yourself better equipped, with a clearer understanding of the principles at play.
I should also mention that I'm no stranger to Andrew's work. Having explored some of his other writings, I can confidently say that he possesses a unique flair for communication. His ability to distill complex ideas into accessible language, without losing the essence of the subject, is truly commendable. Andrew writes with a certain finesse and sophistication that makes even the most daunting topics seem approachable. His style is not just informative, but also engaging, with a touch of elegance that sets his work apart from others in the field.
In summary, while the path to mastering AI is undeniably steep, this book serves as an invaluable guide. It’s not just a starting point; it’s a beacon for those who are serious about understanding the intricacies of artificial intelligence. Be prepared to invest time and effort, and in return, you'll gain a solid foothold in a subject that is as fascinating as it is complex.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 2, 2024
recommand products
HKM-003667 Xizhi Extra Fine Waterproof Long-lasting Liquid Eyeliner Pen in Multiple Colors
57.99
HKM-478227 22-Piece Loose Powder Blush and Eyeshadow Makeup Brush Set with Wooden Handles and Soft Man-Made Fibers
59.99
MBRP Exhaust S5001409 - T409 Stainless Steel.
119.99
HKM-428499 Makeup Brush Color Cleaning Box - Portable Makeup Sponge Cleaner with Quick Drying Pad
57.99
HKM-543763 Electric Heated Eyelash Curler with USB Charging, 360° Rotating Design, White
59.99