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As 2024 transitions into 2025, CARKU successfully completed its two-week Winter Test Challenge in northern China. The testing team traveled to areas like Hailar, Genhe, and Mohe in Heilongjiang, where temperatures regularly drop below -30°C and sometimes reach -40°C.
Testing CARKU Heavy Duty Jump Starters and Heavy Truck Starting & Energy Storage Batteries, the team confirmed that these products performed excellently, consistently providing stable power and successfully starting trucks even in extreme cold. This success has earned high praise from truck drivers and solidified reputation of CARKU for reliability and quality.
CARKU Founder Cloud Lei emphasized the importance of real-world testing in extreme cold. “Starting heavy trucks in temperatures as low as -40°C is a global challenge,” he said. The winter tests allow the R&D team to engage directly with users, gather valuable feedback, and optimize product design and performance for better market reliability.
Throughout the testing, the team evaluated starter performance, capacity, and key components. They also provided free jump starter services to stranded truck drivers, earning widespread appreciation. This direct interaction with users provided crucial data to improve CARKU products.
Heavy Duty Jump Starter: Smart safety features, portable design, and various models with peak currents of up to 5,000A for extreme cold conditions.
Heavy Truck Starting & Energy Storage Battery: Low-temperature starter capability, long lifespan (8-10 years), and advanced safety features.
12V Starting & Energy Storage Battery: Perfect for small vehicles, offering high cold starter performance, durability, and safety.
99.9Wh TSA-Compliant Power for Travel & Emergencies. Slim, powerful, and flight-ready—PB-53 delivers 99.9Wh of portable energy in a sleek 0.94kg design. With dual USB-C PD 100W inputs/outputs and AC sine wave output, it powers laptops, drones, cameras, and CPAP machines anytime, anywhere. Whether you’re on a plane, a photoshoot, or a remote worksite, PB-53 keeps your gear charged fast and safe.Designed for travelers, creators, and on-the-go professionals, this ultra-compact 99.9Wh portable power station fits in your backpack
(*For Power Station ODM/OEM Solutions, secure your exclusive quotation now!)
CB-18 truck starting battery delivers 3.84kWh capacity with 2500A cranking amperage for reliable trucks starting battery performance in all weather conditions. This start stop power solution not only ensures instant truck engine starting but also supplies continuous power for air conditioner operation during driver rest periods without engine idling. Advanced built-in BMS technology provides overcharge prevention, temperature monitoring, and cell balancing to maximize battery life and ensure safe operation.
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Powered by advanced lithium iron phosphate (LiFePO₄) technology, the CARKU JS-78F delivers a peak current of 2300A—engineered to handle everyday driving demands with confidence. Its sleek, compact design fits easily into your trunk while providing reliable jump-start performance for cars, SUVs, and heavy-duty equipment. With integrated emergency lighting and built-in mobile device charging ports, the JS-78F is more than just a jump starter—it’s your all-in-one road companion for safety, convenience, and peace of mind wherever you go.
(Looking for Jump Starter ODM/OEM Solutions? Contact us for your exclusive quote today!)

Building A, Qixing Creative Square,
Lianrun Rd., Gaofeng Community,
Dalang Street, Longhua District,
Shenzhen,Guangdong,China

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