How long does it take to fully charge the Dremel 8240?

Once the B815-01 battery pack is inserted into the charger a blinking green light on the charger will indicate the battery is charging. A solid green light will indicate a fully charged battery. Total charge time is approximately 65 minutes.

How long does a full battery charge last?

The 8240 battery lasts approximately 10 minutes in heavy duty applications and 20 minutes in light duty applications. The estimates provided are based on average use and actual runtimes may vary.

The Battery Indicator light shows three flashing lights, what does this mean?

The three flashing lights indicates that the tool is stalling and is too hot for use. If this happens, remove the tool from the material & shut off. Allow it to cool down. Resume use without excel pressure.

What’s the difference between the Dremel 8220 and the 8240?

Versus the 8220, the 8240 features improved design & extended soft grip for more control & comfort. The tool also has enhanced electronics for optimal power, performance and efficiency; and also has improved ventilation to reduce heat during use.

What’s the main difference between the Dremel 8250 and the 8240?

The 8250 features a brushless motor that provides more power, more runtime and more speed vs the 8240 brushed motor. The 8240 does still provide a high level of power, and performance.

Dremel 8240-5 12V Cordless Rotary Tool Kit with Variable Speed and Comfort Grip - Includes 2AH Battery Pack, Charger, 5 Accessories, Wrench, and Tool Fabric Carry Bag

Dremel 8240-5 12V Cordless Rotary Tool Kit with Variable Speed and Comfort Grip - Includes 2AH Battery Pack, Charger, 5 Accessories, Wrench, and Tool Fabric Carry Bag

Product ID: 658372320

Details

Brand
Dremel
Colour
black
Power Source
Battery
Recommended Uses For Product
Cutting
Voltage
12 Volts

⚡12V / 2AH Lithium-Ion Power

🔄5,000-35,000 RPM Variable Speed

🖐️360° Ergonomic Comfort Grip

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Description

🔧 Power, Precision, Portability — Your Ultimate DIY Sidekick!

ERGONOMIC MASTERY - 360-degree grip zone designed for all-day comfort and precision control—work smarter, not harder.
CORDLESS POWERHOUSE - Unleash up to 35,000 RPM with a long-lasting 12V lithium-ion battery for uninterrupted creativity.
SMART BATTERY INSIGHT - LED indicators keep you ahead of the charge curve, so you never get caught mid-task.
SWIFT ACCESSORY SWAPS - Patented EZ Twist Nose Cap lets you change accessories in seconds—no wrench, no downtime.
VERSATILITY UNMATCHED - From cutting to sanding and grinding, fully compatible with all Dremel attachments to tackle any project.

The Dremel 8240-5 is a compact, cordless rotary tool powered by a 12V/2AH lithium-ion battery delivering variable speeds from 5,000 to 35,000 RPM. Its ergonomic 360° grip ensures comfort during extended use, while the patented EZ Twist Nose Cap enables quick accessory changes without tools. Compatible with all Dremel attachments, it’s designed for versatile applications including cutting, sanding, and grinding. LED battery indicators and ventilation openings optimize runtime and tool longevity, making it a top choice for professionals and DIY enthusiasts alike.

Specifications

ASIN	B09SKFVSMZ
Best Sellers Rank	#113,503 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5,390 in Industrial Power Tools
Brand	Dremel
Brand Name	Dremel
Colour	black
Country of Publication	USA
Customer Reviews	4.6 out of 5 stars 2,114 Reviews
Included Components	Cordless Rotary Tool, (6) Rotary Tool Accessories, Accessory Storage Case, 12V 2.0Ah Battery Pack, GAL12V-20 Battery Charger, User Manual Fabric Tool Storage Case, Instruction Manual
Item Dimensions	25.3 x 5.1 x 6 Centimeters
Item Type Name	Cordless Rotary Tool
Item Weight	1.46 Pounds
Manufacturer	Dremel
Manufacturer Part Number	8240-5
Maximum Rotational Speed	35000 RPM
Minimum Speed	5000 RPM
Model Number	8240
Number of Batteries	1 Lithium Ion batteries required. (included)
Other Special Features of the Product	Compact, Cordless, Por, Variable Speed
Power Source	Battery Powered
Recommended Uses For Product	Cutting
Special Feature	Compact, Cordless, Por, Variable Speed
Style Name	Original Kit
UPC	080596057336
Unit Count	1.0 Count
Voltage	12 Volts

Reviews

J**P

Dremel always amazing

22.06.2024

J**.

Picked during Prime Deals and have no regret.

17.10.2025

M**I

110V يجب شراء محول منفصل

ممتاز جدا جودة عاليه العيب الوحيد الشاحن 110V

23.11.2025

D**.

Works Great

15.02.2026

E**O

Excelente desempeño de sus funciones

Excelente desempeño, es justo lo que ofrece la marca y lo recomiendo.

18.02.2025

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