I stuck this power station in a freezer to test its subzero claims - here's what happened next
Briefly

I stuck this power station in a freezer to test its subzero claims - here's what happened next
"Without some form of heating, lithium-ion cells begin to struggle to deliver power once temperatures drop below 32°F (0°C). By the time temperatures hit 5°F (-15°C), the battery's capacity can be reduced by 30%-40%, depending on factors such as the battery's age and quality."
"Charging lithium-ion batteries at or below 32°F (0°C) can cause permanent damage due to a process called lithium plating. This occurs when lithium metal is deposited on the surface of the battery's anode instead of being properly absorbed into the material. At best, this process can kill the battery. At worst, it can cause short circuits or even fires."
"The Pioneer Na has a 1,500 W power output and a capacity of 900 Wh. It features all the usual ports and outlets you'd expect -- four 120 V 1,500 W AC outlets, four 15 W USB-A ports, a 100 W USB-C port, a 12 V/10 A car outlet, and even a 15 W wireless charging pad."
Cold temperatures severely impact lithium-ion battery performance and safety. Below 32°F, these batteries struggle to deliver power, and at 5°F, capacity drops by 30-40%. Charging lithium-ion batteries in cold conditions causes lithium plating, where lithium metal deposits on the anode instead of being absorbed, potentially destroying the battery or causing fires. Bluetti addresses this problem with the Pioneer Na, a power station using sodium-ion technology that performs reliably in cold weather. The Pioneer Na offers 1,500W output, 900Wh capacity, multiple charging ports, and can charge from flat to 80% in 45 minutes via AC power.
Read at ZDNET
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