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The 12V 30Ah sodium battery is designed to fully replace traditional 40Ah lead-acid batteries, bringing a new level of efficiency, innovation, and environmental adaptability.
When we talk about “battery replacement,” it’s not just about capacity numbers. There’s referring to performance, cost efficiency, and sustainability.
Lead-acid batteries are heavy and cheap, but their limited cycle life and poor low-temperature performance make them less ideal for modern vehicles. (Na) Sodium batteries, by contrast, are made from materials widely available in seawater, meaning that with advanced extraction technology, their long-term cost will continue to decrease.
When comparing sodium battery prices with LFP batteries, some users may feel confused. It’s true that many sodium batteries are currently priced higher than lead-acid and even LFP lithium batteries. However, the value lies in their durability and excellent performance in extreme conditions. Let’s take a closer look at the advantages of the 12V 30Ah sodium battery.
For cars and other vehicles, the 12V 30Ah sodium battery provides a 360Wh capacity and can charge at −15°C and discharge at −25°C in cold weather. With a working temperature range of −40°C to 80°C, it maintains stable output and can deliver up to 1000A of peak current even in freezing conditions. Although it has slightly lower energy density than lithium batteries, it delivers excellent reliability at roughly 1.5X the cost of LFP, making it a strong long-term investment.
The average lifespan of a lead-acid battery is about 18 months. Although it is cheaper than a lithium battery, it requires regular electrolyte inspections and needs to be replaced more frequently.
Vice versa, sodium batteries are currently about 1.5× more expensive than LFP batteries, while LFP batteries are only slightly more expensive than lead-acid batteries. However, both sodium and LFP batteries offer a long cycle life of at least 3,000 cycles. Typical lithium batteries reach 2,000-5,000 cycles (5-10years), and LFP batteries can achieve over 6,000 cycles (10+ years).
A sodium battery can be used for many years and still has recycling value, while a lead-acid battery needs to be replaced more often, leading to higher long-term costs due to frequent battery drain and maintenance.
A 12V 30Ah sodium battery provides sufficient power (30 amp-hours at 12 volts) for vehicle starting and other onboard functions. Some models even feature smart app integration, allowing you to monitor battery status and track its location for added convenience and theft protection.
Designed specifically for extreme cold, the 12V 30Ah sodium battery can safely start engines at temperatures as low as –40°C. Whether you’re driving in harsh winter conditions, going ice fishing, snow camping, or facing a winter blackout, it keeps your equipment running no matter how low the temperature drops.
So, how can you get one for cold-weather use? CARKU primarily serves OEM and ODM business and resale customers, and our sales team provides full support, including sample pricing, delivery schedules, and guidance on ordering a 12V 30Ah sodium battery.
In short, while sodium batteries are still unfamiliar to many people, they are already highly practical for cold environments and perform reliably where lead-acid batteries often fail.
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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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