$278.81
Holiday Deal
· 6% off
was $297.95
Buy Now, Pay Later
As low as
$46.47
/ mo
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- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
Extended holiday returns
FREE refund/replacement until Jan 31, 2027 Learn more
FREE refund/replacement until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Friday, Nov 13
Recently Viewed
At a glance
- Condition
- New
- Model
- 3841-20
- Voltage
- 18 V DC
- Vehicle Service Type
- automotive
- Specification Met
- IP65
- Battery Type
- Lithium Ion
Features 5
- No pre-charging or maintenance required
- True All-Weather Performance
- Digital display with real-time voltage readout
- Custom clamp design for better terminal access
- IP65 rated for dust and water resistance (tool only)
Description
This is a new-to-world automotive solution designed to deliver instant, maintenance-free jump starts using Milwaukee’s M18™ battery platform. It’s built for roadside pros, fleet techs, and anyone who needs reliable power in extreme conditions.
Specs 15
| Brand | Milwaukee |
|---|---|
| Battery Cell Composition | Lithium Ion |
| Voltage | 18 V DC |
| Vehicle Service Type | automotive |
| Specification Met | IP65 |
| Battery Type | Lithium Ion |
| Compatible with Vehicle Type | automotive |
| Brand Name | Milwaukee |
| Manufacturer Part Number | 3841-20 |
| Manufacturer | Milwaukee Electric |
| UPC | 045242884452 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Unit Count | 1 Count |
| Model Number | 3841-20 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 13
Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
You need this if you have anything with a battery!
Performa way beyond expectations!
Reviewed in the United States on September 26, 2026 by Nick T.
Quality Milwaukee tool!
I have jump started so many things with this. Milwaukee Tools are top notch! Well worth the money! Very durable and easy to use.
Reviewed in the United States on September 25, 2026 by Robert
don't leave home with out it.
this thing is a beast I've used this to start everything from lawn mowers to high performance enigines and it's never failed my only complaint would be that the cables could be a little longer
Reviewed in the United States on August 10, 2026 by james bennett
Huge! Works well
This thing is a unit! It’s huge even without a battery on it yet. I use the Noco 150s on a couple of my trucks and this thing is huge compared to them. Great product so far though, easy to use and plenty of power when you pair it with a large capacity battery.
Reviewed in the United States on April 19, 2026 by Johnathan Maksanty
Great
So far I've just used it on a mower but it worked like it should
Reviewed in the United States on August 13, 2026 by Gary Kempf
No muy portatil.
Un buen producto pero el tamaño no es muy portable en mi opiniòn.
Reviewed in the United States on January 3, 2026 by sergio
Just buy it! It’s worth the money
Absolutely love this product! Bought it for my husband last Christmas and he uses it regularly! Battery life is amazing and has great power ! Very strong product! Definitely worth the price
Reviewed in the United States on September 3, 2026 by Kari
Works great
Works great. 0 problems
Reviewed in the United States on August 19, 2026 by alaina torres