FAQ

🪫 I thought charging Li-ion batteries at sub-zero temperatures is bad?

Yes, that’s correct — in general, charging lithium-ion batteries below 0 °C is not recommended because it can cause lithium-plating and long-term degradation. But in our case there are a few important mitigating factors:

• Breezedude charges with an extremely low current (<25mA/0.025 C), which greatly reduces stress on the battery.
• The charge window is tiny — only a few percent DoD, not a full cycle.
• It only happens on a few days per year, and for short periods.
• The battery is inexpensive and easy to replace if long-term wear appears.

Alternative technical solutions would be far more complex and expensive (e.g., heating systems, supercaps, specialized cold-charge chemistry).

So while it’s technically not ideal, the real-world impact is very small and the cost-to-benefit ratio favors the current approach.

🛜 Will there be a mobile (4G/cellular network) version?

I got ask several times if it would be possible to build such a system for travel guides etc. Technically it is. Practically it is a whole different concept, as it does not necessarily be energy self-sufficient (1-2 weeks rechargeable would be enough). From technical side, there are only a few IoT-4G modules, and all of them kind of suck.

Short answer: No, not yet. (Unless someone will pay for development)

Will there be a stationary 4G version?

No, same as above + there are already systems like that on the market. See About Weather Stations