Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this battery for exceptional power and long-lasting performance, with many reporting all-day runtime on demanding tools like grinders and rotary hammers. The rapid 30-40 minute charge time and intelligent circuitry impressing users, while the LED status indicator helps plan work efficiently. The stacked lithium design consistently outperforms competitors and older models. Most appreciate the durable build and reliable performance under heavy loads. A few mention the weight as slightly heavy for drills and note storage concerns, though most agree performance justifies any trade-offs. Overall, customers consider this a game-changing investment for professional and heavy-duty work.
Customer review summary generated by AI, including incentivized reviews.Great tools
Would RecommendThis battery is the best battery ever the next one I’m gonna purchase is going to be the 10 amp stacked
From flexpowertools.com
Excellent power
Excellent quality and durability and the fast charging feature means you’ll have enough power to complete the projects at hand
From flexpowertools.com
Good stuff.
Would RecommendLong lasting power, well build, nice buttons, real flex
From flexpowertools.com
Amped Up!
Would RecommendNot a significant increase in weight over lower Ah batteries, but a HUGE increase in run time!
From flexpowertools.com
good battery
Would Recommendit's a very good battery. has now lasted me quite a bit of time between charges.
Verified Purchaser
Flex 6.0 Stacked
Would RecommendLots of power & fast charging. Love the fact that the battery indicator is on the side- more useful than one would think. I’ve got 3 of these… definitely need a few more
From flexpowertools.com
expensive but we're on sale!!!
Would Recommendthe power of these batterys is pretty amazing, gives milwalkee a run for its money......facts
big money big power
Would Recommendfound these on sale thank goodness.
Battery
Would RecommendExpensive but worth tge price for the amount of run time and power you get out of the battery.
From flexpowertools.com
Superpower!
Would RecommendLove this battery!!! Very powerful long lasting!! I am honestly impressed with all of the flex batteries. This one is definitely a powerhouse!
From flexpowertools.com
Awesome battery
Would RecommendLong-lasting and powerful!