Will it start a completely dead battery?

I started a vehicle with stolen battery, just use "boost" button. This button forces voltage to be present from YESPER even when no voltage detected from target. The normal safety protocol requires target voltage to be detected before YESPER will supply voltage itself this safety is YESPER proving correct cable hookup. In my nobattery present jump the Vehicle started right up and remained running. Obviously, target vehicle died the instant I removed YESPER and I did not let YESPER stay connected but a few seconds. The point of here is to say yes, it will start when a vehicle with a totally dead battery.

Can transport it abroad?

Dear Customer: Which country are you from? If you are interested in our products, we are willing to arrange another shipping specially for you. For further communication, you can email us. We provide a timely online response for our customers. Sincerely Yesper

Is this yesper set up to allow for faster home charging, like using a 30w usb c charger wall adapter? or some other way to speed that up? thanks!

No box say's 15 watts input! Got one from amazon works great.

If after hooking this up and cranking the starter it does not start what steps need to take place to try and start it again?

Ok...when you read the little booklet it will tell you...there is a little button near the blinking green light you press to fully energize...that should get you your solid green light.

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- YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light

- YESPER 4120A Jump Starter, 12V Car Battery Jumper Starter Portable (All Gas, up to 10.0L Diesel Engine), 26800mAh Battery Start Booster Pack, Jump Box with Carry Case, Jumper Cables, LED Light

Product ID: 414132001

Details

Battery Cell Composition
Polymer
Brand
YESPER
Product Dimensions
8.82"D x x
Vehicle Service Type
Passenger Car
Voltage
12 Volts

⚡4120A peak amps

🔋26800mAh battery capacity

🛠️Supports up to 10.0L diesel engines

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$201.39

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Jumpstart your freedom—power up anywhere, anytime!

ALL WEATHER RELIABILITY - Operates flawlessly from -4℉ to 140℉, engineered for extreme climates and emergency readiness.
MASSIVE 26800 M AH BATTERY - Charge your devices on the go and enjoy up to 60 jump starts per full charge—never get stranded again.
MULTI FUNCTION LED LIGHT - Three lighting modes including SOS strobe for safety and convenience during nighttime emergencies or outdoor adventures.
COMPACT PORTABLE DESIGN - Lightweight 1.38 lbs with a sleek carry case—perfect for your glove box, backpack, or travel kit.
POWERFUL 4120 A PEAK CURRENT - Instantly jump-start any 12V vehicle, from motorcycles to heavy-duty trucks, with unmatched surge power.

The YESPER 4120A Jump Starter is a compact yet powerhouse 12V booster with a 26800mAh polymer battery, delivering a peak current of 4120 amps. It supports all gasoline engines and diesel engines up to 10.0L, providing up to 60 jump starts per charge. Designed for extreme temperatures and equipped with multi-mode LED lighting, it doubles as a portable power bank with USB and Type-C ports. Its durable, fire-proof ABS casing and included carry case make it the ultimate emergency and travel companion for professionals on the move.

Specifications

ASIN	B09Q15SPZJ
Amperage	4120 Amps
Battery Capacity	26800 Milliamp Hours
Battery Type	Polymer
Best Sellers Rank	#53,876 in Automotive ( See Top 100 in Automotive ) #247 in Jump Starters
Brand Name	YESPER
Compatible with Vehicle Type	Passenger Car, Motorcycle, ATV, RV, UTV, Truck,Snowmobile, Lawn Mower
Customer Reviews	4.6 4.6 out of 5 stars (1,220)
Item Dimensions D x W x H	8.82"D x 3.53"W x 1.72"H
Manufacturer	YESPER
Manufacturer Part Number	YESPER
Peak Output Current	4120 Amps
Voltage	12 Volts

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