Elecom is shaking up the power bank market with a world-first: a sodium-ion-powered portable charger. Dubbed the Na+ Sodium-Ion Mobile Battery, this 9,000mAh power bank ditches lithium in favor of a more abundant, eco-friendly alternative—and it’s got some impressive perks to back it up.

Sodium-Ion: The future of batteries?
Lithium-ion batteries have been the industry standard for years, but they come with some baggage—limited resources, ethical mining concerns, and rising costs. Sodium, on the other hand, is far more plentiful and sustainable, making it a promising alternative. Elecom’s move into sodium-ion tech could be the first step toward a battery revolution in consumer electronics.
Built for extreme conditions
One of the biggest highlights? Temperature resilience. Unlike lithium-ion batteries, which struggle in harsh climates, this sodium-ion power bank can handle freezing -35°C (-31°F) to scorching 50°C (122°F) conditions without breaking a sweat. If you’re someone who frequently travels to extreme environments, this could be your most reliable power bank yet.
Safer and longer-lasting
Battery safety is always a concern, but sodium-ion cells are more stable than lithium-based ones. That means a lower risk of overheating or battery failure—something power users will appreciate. Elecom also claims the Na+ power bank is rated for 5,000 charge cycles, significantly outlasting many lithium-ion alternatives.
Performance and trade-Offs
The power bank supports USB-C Power Delivery (45W), which is enough to charge most smartphones, tablets, and even some laptops. There’s also an 18W USB-A port for added convenience. However, sodium-ion batteries aren’t quite as energy-dense as lithium ones, which means the device is a bit on the heavier side (350g). That’s not a dealbreaker, but it’s something to consider if portability is your top priority.
Pricing and availability
The Na+ Sodium-Ion Mobile Battery is launching in black (DE-C55L-9000BK) and light grey (DE-C55L-9000LGY) at 9,980 yen (~$68). Preorders are already open on Elecom’s official store, though there’s a limit of three units per customer. No word yet on international availability, but given the buzz around sodium-ion tech, it wouldn’t be surprising to see more brands jump on board soon.
A glimpse into the future?
Elecom’s sodium-ion power bank is a bold move toward a more sustainable battery industry. As supply chain concerns and environmental factors push companies to find alternatives to lithium, sodium-ion could be the next big thing in consumer electronics. And if this power bank is just the beginning, we might be looking at a future where our everyday gadgets are powered by sodium, not lithium.
Would you switch to a sodium-ion power bank, or are you sticking with tried-and-tested lithium for now?
If you liked this article, check out our other articles on power banks.