How do you know when the power bank is completely charged?

Thank you for your inquiry This jump starter pack has 4 indicator lights. When the jump starter is charging, the indicator light will flash. When the light is solid on, it means that the battery is fully charged, When all 4 lights are on, it means that it is 100% charged

What are the starting amps (not peak amps)?

Back of this device says Start Current: 450 Amps; Peak Current: 3000 Amps.

Will this car starter work in -15 degree weather?

The description of the manual under below Operating Temperature -20℃～+60℃ I asked the factory engineer, the answer is -20 ℃ is also .Whether it is freezing winter or scorching summer, this battery booster can work for your protection.

Do i need to follow the starting amps(450) or peak amps(3000) to crack my suv?

You connect it and either it's going to start your vehicle or it won't.

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Car Jump Starter, 4000A Peak Portable Jump Box, 12V Battery Charger for Truck up to 10L Diesel, Motorcycle, RV, Boat, Dual USB Power Bank, LED Light, Car Accessories for Roadside Emergency Kit

Car Jump Starter, 4000A Peak Portable Jump Box, 12V Battery Charger for Truck up to 10L Diesel, Motorcycle, RV, Boat, Dual USB Power Bank, LED Light, Car Accessories for Roadside Emergency Kit

Product ID: 426618113

Details

Battery cell composition
Lithium
Brand
SYPOM
Product dimensions
16.5D x 8.9W x
Voltage
12 Volts

⚡4000A peak jump power

🔋21,000mAh battery capacity

🔦3-mode LED emergency light

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VT33521

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Description

⚡ Never get stranded again — power up, light up, and charge on the move!

EMERGENCY READY - Integrated LED flashlight with solid, strobe & SOS modes for any roadside scenario
SAFETY FIRST TECH - Built-in spark-proof, reverse polarity & overload protections for worry-free use
POWER BANK ON THE GO - Dual USB ports deliver fast 5V/3A charging for multiple devices simultaneously
COMPACT RUGGED DESIGN - Ultra-portable, drop-resistant build fits perfectly in your trunk organizer
INSTANT ROADSIDE REVIVAL - 4000A peak amps jump starts gas & diesel engines up to 10L in seconds

The SYPOM Car Jump Starter is a powerhouse 4000A peak lithium battery pack designed to jump start gasoline and diesel engines up to 10L instantly. Beyond jump-starting, it doubles as a 21,000mAh dual USB power bank for fast device charging and features a versatile 3-mode LED flashlight for emergencies. Engineered with advanced safety protections and a rugged compact design, it’s the ultimate must-have for professionals and adventurers who demand reliable roadside readiness.

Specifications

ASIN	B09QC4HLT2
Amperage	4000 Amps
Automotive Fit Type	Universal Fit
Battery Capacity	21000 Milliamp Hours
Battery Type	Lithium
Best Sellers Rank	#82,395 in Automotive ( See Top 100 in Automotive ) #123 in Car Battery Jump Starters
Brand Name	SYPOM
Compatible with Vehicle Type	Cars, Motorcycles, Marine, Watercraft, ATVs, UTVs, SUVs, Lawnmowers, Yachts, Boats, Pickups, Snowmobiles
Customer Reviews	4.3 4.3 out of 5 stars (946)
Item Dimensions D x W x H	16.5D x 8.9W x 3.5H centimeters
Manufacturer	AGA Technology Co.,Ltd.
Manufacturer Part Number	A13B car jump starter
Peak Output Current	4000 Amps
UPC	752859204534
Voltage	12 Volts

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VT33521

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