Stanley Tools FATMAX® 100-Amp 12-Volt Fully Automatic Automotive Battery Charger/Maintainer, BC100BF in Yellow

[This review was collected as part of a promotion.] Efficiency: Does a solid job maintaining charge throughout the day, even in cold weather. It’s been reliable for keeping a rough-shape battery from dying. Accuracy: Readouts and charging behavior seem consistent and trustworthy. No surprises while using it. Setup: Very straightforward — plug it in, connect the clamps, and it’s good to go. Compatibility: Works well with my battery type and had no issues recognizing it despite the battery being older. Expectations: Met expectations overall. It’s not meant for fast charging, but as a maintainer in cold conditions, it does what it’s supposed to.

[This review was collected as part of a promotion.] This has been a useful device to have. Excellent quality and easy to use. I’d recommend this for every household or take it camping. Has so many uses. Light weight , perfect comment size, easy read lcd screen.

[This review was collected as part of a promotion.] This is so convenient to have around. It’s much lighter than I expected, and I love that it charges all types of batteries. I’m keeping it in my car trunk for those times that my kids leave the lights on in the car and kill my battery. So nice for peace of mind.

[This review was collected as part of a promotion.] This little Stanley FatMax is exactly what I needed! The BC100BF to keep the battery in my SUV maintained, and it works great. It handles both lead-acid and lithium, which is fantastic for versatility. You just hook it up and forget it. The automatic smart charging does all the work. The unit feels very durable, and I've been running it continuously without any issues. It runs cool to the touch. no worrying about excessive heat and I trust the safety features completely. It's compact and very easy to read. While it's not a fast charger for dead batteries, it's perfect for keeping stored vehicles ready to go. Great value and a must-have for winter storage or garage vehicles!

[This review was collected as part of a promotion.] Picked up the Stanley Fatmax 100A charger mainly for dead batteries and it’s been really handy. It’s straightforward to use, the display is clear and I like that it has both a faster charge option and a maintainer mode for keeping a battery topped off. It’s not tiny, but it feels solid and does the job without extra fuss.

[This review was collected as part of a promotion.] Stanley Fatmax battery charger works great at charging your car battery. The charger is easy to connect and setup to your vehicle. This is very durable and maintenance is very simple. It also can test your alternator and let you know if its good or bad.

[This review was collected as part of a promotion.] I wish I had a more insightful review to share. I was excited to receive this; it came in the mail right when I was experiencing car troubles, specifically battery troubles, and I thought it was a sign. I quickly found that this is not convenient as a car engine starter. If you think you can put this in your trunk in case of emergency, you'll be disappointed. The products only works if it is plugged in. The instructions deter the use of an extension cord, but the cords that are integral to the unit are far too short for this to be a practical tool to most people. I gave it 3 stars because in theory, the unit works and does what it says it does, but if I'm honest, I didn't get to try all the features I wanted to because of the inconvenient cord/cable lengths.

[This review was collected as part of a promotion.] I've been searching for battery charger and found Stanley is the one easiest to use, and to store, not heavy to carry like older one. Recommended!

[This review was collected as part of a promotion.] This stanley charger and maintainer is very nice. I like that it has points where the positive and negative clips can grab on so they aren't loose and dangling. The handle feels very strong. I like how there is a spot for the plug-in cord to wrap up, but I wish there was something that would grab that so the end isn't loose dangling. The screen is very bright and easy to read. The button functions are very simple to understand.

[This review was collected as part of a promotion.] The Stanley FatMax battery charger is a great addition to anyone's garage. Whether you need to charge a lithium ion battery or a lead acid battery, the Stanley FatMax has you covered.

[This review was collected as part of a promotion.] Lightweight and compact insurance policy. Great for batteries that sit or spend time in the cold winter. Great for marine batteries and charges slow and steady to protect the battery life. I love this little trickle charger and maintainer. Highly recommend for batteries that sit for any period.

[This review was collected as part of a promotion.] This seems like a highly advanced product. However, it is not often I need a maintainer and I feel would be more useful with a jumper. Regardless, it has the cables it needs which makes it super easy to use when needed. The manual is a tad confusing and if it had more clarity would be miles better!

[This review was collected as part of a promotion.] It’s so compact and light. It’s definitely a need in all cars. It checks the engine, battery life and jumpstarts your car without the Long cables tangled up. I love it. It’s compatible and works real good.

[This review was collected as part of a promotion.] I received this Stanley FatMax BC100BF 1 Amp Battery charger & maintenance for lead acid & lithium batteries complementary to share my honest experience The build quality is the first thing I noticed — it feels solid and well put together, not flimsy at all. The cables are thick and sturdy, which gives a lot of confidence when using it. I like that it supports both lithium and lead-acid batteries, so it works for different vehicles and tools. The screen is clear and easy to understand, and the buttons are straightforward. It has opposite-polarity protection, which is a big relief because I don’t have to worry about connecting something the wrong way. I haven’t tried jump-starting my car yet, however I honestly feel it will perform really well when needed. The charger runs quietly and doesn’t get too hot, which is a plus. It’s surprisingly portable for its size and feels easy to carry around. The battery life and performance have been solid so far — it charges smoothly without any issues. Overall, it’s a dependable tool to keep in the garage, especially for emergency situations.

[This review was collected as part of a promotion.] Great product, and great value. I could use it and it worked as expected . The visual is awesome and it seems upgraded with you compare with similar products Definitely a battery charger you must have for emergencies

[This review was collected as part of a promotion.] I recently used the Stanley FATMAX battery charger/jump-starter on my car, and honestly, this thing is a lifesaver! The design is compact, sturdy, and easy to handle it feels solid and dependable the moment you pick it up.What impressed me most is how fast and effortless the setup is. The clamps are strong, the cables are long enough to reach comfortably, and the digital display makes everything clear and simple. It gives you instant information on your battery level and the charging status, so there’s no guessing. The 100A engine start power is strong enough to boost a completely drained battery, and the 25A fast-charging mode is perfect when you need a quicker recharge without waiting forever. I also appreciate that it works for both lithium and lead-acid batteries super convenient if you switch cars or help someone else. Another thing I love is the built in safety features: reverse polarity protection, alternator check, and smart charging. It feels very beginner-friendly and safe even if you’re not a car expert. Overall, the Stanley FATMAX is reliable, powerful, and easy to use. It’s one of those tools you don’t think you need until the day you really need it and then you’re thankful you have it. Highly recommended for anyone who drives, especially if you live somewhere hot, cold, or you’ve ever dealt with sudden battery issues.

[This review was collected as part of a promotion.] this is so convenient to have! you never know when you’ll need to jump start something. it seems to work extremely well while also being very high quality. i would recommend this for everyone to keep handy.

[This review was collected as part of a promotion.] The Stanley FatMax BC100BF is an excellent battery charger and maintainer. It’s very easy to use and works great for keeping both 6V and 12V batteries fully charged. I like that it’s compatible with multiple types of batteries, including AGM, GEL, and lithium, which makes it super versatile. It charges efficiently and safely, and the automatic shut-off feature gives peace of mind knowing it won’t overcharge. The display is clear and simple to read, and the overall design feels sturdy and durable. Perfect for maintaining car, motorcycle, or lawn equipment batteries definitely a reliable tool to have on hand. Highly recommend!

[This review was collected as part of a promotion.] So my husband's battery on his car was toast and we plugged this thing up to it to try to revive it and honestly so far it's worked. Which is so impressive tbh.

[This review was collected as part of a promotion.] Maybe my truck battery was just too dead, but this will not charge it whatsoever. The packaging and actual unit are nice and very durable, the instructions are confusing and not very intuitive though