







⚡ Jumpstart your freedom—power, safety, and convenience in one sleek pack!
The Schumacher Electric SL1643 is a versatile 4-in-1 lithium jump starter delivering 2000 amps to start large engines up to 10.0L gas or diesel. It features a 59.2Wh battery with fast 10W wireless charging and dual USB ports, plus smart safety tech including spark-proof clamps and reverse polarity protection. Lightweight and compact, it also includes a multi-mode LED flashlight, making it an essential power and emergency tool for automotive, marine, and powersport vehicles.


| Brand | Schumacher Electric |
| Product Dimensions | 1.57"D x 3.3"W x 7.59"H |
| Item Weight | 1.4 Pounds |
| Amperage | 2000 Amps |
| Peak Output Current | 16000 Milliamps |
| Specification Met | UL |
| Manufacturer | Schumacher Electric |
| UPC | 026666816434 |
| Automotive Fit Type | Universal Fit |
| Model | Schumacher Electric SL1643 Lithium Portable Power Pack and Jump Starter |
| Item Weight | 1.4 pounds |
| Item model number | SL1643 |
| Exterior | Machined |
| Manufacturer Part Number | SL1643 |
C**N
Good product
After buying the starter/jumper I used it for the first time starting a friend’s Harley who had left his ignition on and meanwhile my battery died because I was on a bike I haven’t ridden in months and my lights were on during the process of starting his bike but the device started both bikes with 88% battery left. Schumacher is a trusted brand and it worked well
N**S
Very Dependable, Keeps Strong Charge
I bought a similar jump pack a couple of years ago. (Different brand.) The last one would jump the car once and need recharged. THIS device has made me very happy. I used it 4 times without needing to charge it. Actually, it is still holding the charge. I'm not sure how many jumps I can get before needing to charge again. I will update this review if I have more data to share.
C**S
Nice compact design.
I use this jump pack in my shop for small engine work. It has performed well over the years I've had it, with no issues.
A**R
Estafas
The media could not be loaded. No lo compres reclamé por la garantía no se asen cargo pues saben lo que vende estafas
D**B
Jump tool
Clear instructions and well made!!!
P**E
Schumacher SL1643
I ordered this after having to have my car jump started and the service man used a similar model.The first one I ordered did not work. A Schumacher tech walked through testing it with me and offered to send me a label so they could repair it. Instead, I returned it to Amazon and ordered another.Requires a 2A USB charger, but doesn't come with one. I used the charger for my iPhone.Came 88% charged and reached 100% relatively quickly.My iPhone max has been sitting on it charging for about an hour and has gone from 80% to 95% which has reduced the power level in the jump starter from 100% to 90%.We shall see how well it holds up to being in the trunk of my car.
M**A
HIGHLY RECOMMEND!
Excellent! I have trusted many versions of this device since 2017. Comes charged about 60%. I just jump started a 2001 Ford F-250 7.3L diesel engine with ease. That only used up 14%! This purchase was to upgrade my old unit that I use with my 2011 Camaro 6.2L. I also used my old device to charge my phone and tablets when charging. I’m looking forward to using the wireless charging of this iteration!
Trustpilot
2 weeks ago
2 weeks ago