Sodium Ion Versus Lithium Car Jump Starters
Why our GK series uses sodium-ion cells, what that means for cold-weather starting, and what to ask any supplier before you commit a fleet.
Almost every jump starter on the market is lithium. Our GK line is not, and buyers reasonably want to know why. The short answer is that we selected sodium-ion chemistry specifically for emergency starting duty, and cold-weather behaviour is the reason the line exists.
What The Duty Cycle Actually Looks Like
A jump starter spends almost all of its life sitting unused, then has to deliver very high current on demand, often on the coldest morning of the year.
That is an unusual profile. It is not a phone battery and it is not a power tool pack, and the chemistry that suits it best is not automatically the one that dominates consumer electronics.
Why We Chose Sodium Ion
We built the GK series around sodium-ion cells for this duty, and market the line as the first sodium battery car jump starter.
The GK01 is rated at 15V with 1500A peak current and a 17500mAh pack, starting petrol engines up to 6.0 L and diesel up to 3.0 L. The GK03 carries 27500mAh, with peak current and engine rating confirmed per production batch.
Capacity Is Not The Same As Starting Power
Buyers compare mAh figures because they are printed in large type. Peak current is what actually turns an engine over.
Ask any supplier for both numbers, and ask what engine sizes the unit is rated for in petrol and diesel. If they will only give you mAh, you are not being told the whole specification.
The Multi Function Question
Both GK models combine emergency starting, a power bank, an air pump and emergency lighting in one case.
For a fleet that is genuinely useful, because it is one item to charge and track rather than four. It also means the pack gets used regularly, which is the best defence against finding it flat in an emergency.
Shipping Is Part Of The Specification
Battery products travel under dangerous goods documentation and the available routes depend on destination and quantity.
Resolve this before you place the order, not after. We handle the declaration and booking, or hand over to your nominated forwarder.
Categories Referenced In This Guide
Models Discussed Above
GK01 Sodium Battery Jump Starter 17500mAh
Emergency starter, power bank, air pump and work light in one 17500mAh sodium-ion case.
View Specifications
GK03 Sodium Battery Jump Starter 27500mAh
The high-capacity sodium starter: 27500mAh with PD 60W, for fleets that start more than one vehicle a day.
View SpecificationsKeep Reading
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Is sodium ion safer than lithium
Safety depends on cell quality, pack design and protection circuitry as much as chemistry. What we can say is that we selected sodium-ion for this line's duty cycle and that our cell test data is available on request.
What should I ask before specifying for a fleet
Peak current, rated engine size in petrol and diesel, capacity in mAh, recharge time and the shipping route for your destination. For the GK03 we confirm peak current per production batch.
Can these be branded for a fleet
Yes. Silkscreen artwork, colour box and manual are customisable on both GK models.
Put This Into A Quotation
Send the models and quantities you settled on and we will price them, including any customisation.