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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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

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: 438902757

Details

Brand
Dremel
Color
Black
Power Source
Battery
Recommended Uses For Product
Grinding
Voltage
12 Volts

⚡12V / 2AH Lithium-Ion Power

👜Compact Carry Bag Included

🔄5,000-35,000 RPM Variable Speed

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

¥25233

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Details

Brand
Dremel
Color
Black
Power Source
Battery

Description

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

ERGONOMIC 360 GRIP - Sleek, comfortable design ensures fatigue-free control during extended DIY sessions—work smarter, not harder.
EZ TWIST QUICK CHANGE - Patented nose cap lets you swap accessories in seconds without tools—stay in the flow, no interruptions.
VERSATILITY MEETS PRECISION - From cutting and sanding to engraving and sharpening, compatible with all Dremel accessories for endless creativity.
CORDLESS FREEDOM MAXIMUM POWER - 12V lithium-ion battery delivers cord-like performance with up to 35,000 RPM for tackling any project on the go.
SMART BATTERY INDICATOR FAST CHARGE - LED battery life display keeps you in control, with a rapid 30-40 minute recharge to keep projects moving.

The Dremel 8240-5 is a professional-grade 12V cordless rotary tool featuring a powerful 2AH lithium-ion battery, variable speeds from 5,000 to 35,000 RPM, and an ergonomic 360-degree grip for superior comfort. It includes 5 versatile accessories, a quick-change EZ Twist nose cap, and a fabric carry bag, making it perfect for detailed sanding, cutting, grinding, and polishing tasks. With a fast-charging battery and LED life indicator, this tool combines portability with high performance to empower millennial professionals to tackle any project with confidence.

Specifications

ASIN	B09SKFVSMZ
Battery Average Life	2 Hours
Best Sellers Rank	#4,773 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Power Rotary Tools
Brand	Dremel
Brand Name	Dremel
Color	Black
Customer Reviews	4.6 out of 5 stars 2,168 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	9.98 x 2 x 2.38 inches
Item Type Name	Cordless Rotary Tool
Item Weight	1.46 Pounds
Manufacturer	Dremel
Manufacturer Part Number	8240-5
Manufacturer Warranty Description	Limited 2 Year Manufacturer
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	Cordless
Power Source	Battery Powered
Recommended Uses For Product	Grinding Cutting, Sanding
Special Feature	Cordless
Style Name	Original Kit
UPC	080596057336
Unit Count	1.0 Count
Voltage	12 Volts

Reviews

J**.

17.10.2025

G**M

31.01.2026

W**M

20.01.2026

B**.

26.01.2026

R**R

3.04.2026

C**T

20.04.2025

O**N

13.09.2023

J**J

11.01.2026

J**P

22.06.2024

M**I

23.11.2025

D**.

15.02.2026

E**O

18.02.2025

A**A

9.11.2023

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.