




⚡ Power up your workflow with FLEX 24V — the battery that works as hard as you do!
The FLEX 24V 8.0Ah Lithium-Ion Battery (FX0221-1) combines advanced 24V lithium technology with innovative THERMA-TECH cooling and POWER IQ management to deliver up to 25% longer runtime and superior power output. Engineered for durability with drop, dust, and water resistance, it features a patented dual-sided fuel gauge and supports ultra-fast charging (up to 50% faster). Compatible across all FLEX 24V tools and backed by a limited lifetime warranty upon registration, this battery is designed for professionals demanding reliable, high-performance power on the go.
| Manufacturer | FLEX |
| Part Number | FX0221-1 |
| Item Weight | 3 pounds |
| Product Dimensions | 5.6 x 3.5 x 2.8 inches |
| Item model number | FX0221-1 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Size | 8.0Ah |
| Color | Grey/Black |
| Style | 8.0Ah Lithium-Ion |
| Finish | Brushed |
| Material | Blend |
| Pattern | Solid |
| Shape | Rectangular |
| Power Source | hand_powered |
| Voltage | 24 Volts |
| Item Package Quantity | 1 |
| Included Components | 8.0Ah Lithium-Ion Battery |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Lithium Ion |
| Battery Capacity | 8 Amp Hours |
| Warranty Description | Limited Lifetime Warranty with Registration |
D**E
Great Replacement
Great replacement battery. Charges well. Fits drill and charger great. Easy to switch out.
T**D
Great battery
Wow great deal on an 8ah battery. Lowes wanted $190 for it. Love my flex tools.
S**S
Charger
Why did you pick this product vs others?:Works just like it is should.
P**.
Bargain 24 volt Flex battery I would highly recommend
Purchased as a spare battery for my Flex 24 volt Power tools. It has plenty of power, and if you immediately register your purchase with Flex, comes with a lifetime warranty! I know as they just replaced one for me, and I purchased this one as an extra for some new Flex tools (no battery or charger) I just purchased. These are being fazed out for the new "Stacked" 24 volt lithium Ion batteries by Flex. Great entry battery at an incredible price right now.
F**E
byer beware
Bought this battery in March 7 , 2025 . Now barely 3 month later it went bad , won't charge . when put on the charger it said its full . and when put in the drill, it only run for 3 seconds . If you bought Flex products in 2025 , Flex would give the life time warranty on their tool and battery . BUT since I bought this battery from this web site , Flex won't honor the Warranty because they 're not associate with the site . so beware of the situation before you buy from this web site .
T**C
Shipping
Shipped on time and was as described
D**S
Love Flex
Great battery. I use this battery every day in my Flex SDS hammer drill and grinder. It's a little big and heavy but all batteries this size are
G**T
Life changer
Really charge fast
Trustpilot
4 days ago
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