The Complete Handbook of Power Tool Chargers

The first chapter is genuinely informative and it's clear the author knows his stuff. I learned more about the communication protocol between the charger and battery than I have from years of reading forums. My main issue is that the book feels more geared toward the electronics nerd than the working contractor. I was hoping for a quicker, more direct path to 'which one should I buy for my crew?' rather than the deep dive into charging algorithms. It's good, but it's not an instant answer book.

I'm a facilities manager with a mixed fleet of tools, and this has become my go-to reference. The chapter on understanding how a charger works finally explained to me why my old charger was so slow on new high-capacity batteries. It's written in plain English, not marketing speak. I docked a star only because I wish it had more specific side-by-side comparison examples of popular models, but the general principles are solid and have already saved me from making a bad purchase.

I bought this to understand if I could use a 6A charger on a 2Ah battery without ruining it. The answer, apparently, is complicated. The author does explain it, but he takes a while to get there. The writing is clear, but the first chapter is dense. I'm a hobbyist, not an electrical engineer, so some of it went over my head. Still, it's a lot more reliable than the various conflicting opinions you get on Facebook groups. It's a good reference, just be prepared to read carefully.

As a lead carpenter, my chargers take a beating and my batteries are my livelihood. This book is a lifesaver. I had a charger that kept shutting off, and the troubleshooting section in chapter five walked me through the fix. It was a blocked cooling vent and a dirty contact—took me ten minutes to clean. I've already ordered new rapid chargers for my crew based on the selection advice, and I know they'll pay for themselves in lost downtime. This isn't theory; it's practical knowledge that works.

This is a surprisingly deep dive into a subject I thought was simple. The section on how the charger 'talks' to the battery and adjusts voltage and current is mind-blowing, and it's explained really well. The book is worth it for the troubleshooting checklist alone. It's a solid, practical handbook. My only minor complaint is the price is a bit steep for a book I'll likely consult once or twice a year, but the information is unique. I'm glad I have it on the shelf.

A very thorough reference for anyone serious about their cordless tools. I own a construction company and we have dozens of chargers across three job sites, and this has helped me standardize our approach and understand the real costs of slow charging. The chapter on business opportunities was a nice bonus too. The reason it's not a 5-star for me is that it can be repetitive in places, reminding you of the same safety points multiple times. But for the depth of information, it's worth it.

Finally, a book that treats power tool chargers as the important piece of equipment they are. I appreciated that it doesn't assume you're a beginner, but it also doesn't skip the basics. The distinction between constant current and constant voltage phases finally made sense to me. I've already recommended it to my other managers. The focus on actual, practical benefits—like why a fast charger doesn't always mean faster project completion because of battery cooling—is worth the price of the book.

Good, reliable reference. I'm self-employed and do a lot of deck work, and I bought this to see if investing in a multi-bay shop charger was worth the cost. The book gave me a clear process for calculating my charging needs based on battery Ah and charger output, and I'm now confident in my decision. It's a bit textbook-heavy in the early chapters, but the information is spot on. A solid resource for a professional who wants to understand the gear, not just blindly buy it.