#2,035 in Computer networking products
Reddit mentions of fosa Low Power Consumption E5573Cs-322 3G/4G LTE USB Pocket WiFi Router Mobile Hotspot Wireless Network, Compatible with a Variety of WiFi terminals for Tablets, Notebooks
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Reddit mentions: 1
We found 1 Reddit mentions of fosa Low Power Consumption E5573Cs-322 3G/4G LTE USB Pocket WiFi Router Mobile Hotspot Wireless Network, Compatible with a Variety of WiFi terminals for Tablets, Notebooks. Here are the top ones.
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Low power consumption, long battery life, charging for about 90 minutes, working time is about 5-6 hours.Plug in the card and have WIFI, play games, computers, travel can be used.Theoretical download 150Mbps, upload speed 50Mbps, 10-30 times faster than 3G.Compatible with a variety of WIFI terminals such as tablets, notebooks, and mobile phones.Long press 1-2 seconds WIFI one button to open, no need to wait.
Specs:
Something like this: https://www.amazon.com/fosa-Consumption-E5573Cs-322-Compatible-terminals/dp/B07PFSVCF3
And then increase battery by getting a USB battery bank like this:
https://www.amazon.com/50000mAh-Lithium-Battery-Resource-Charger/dp/B07WC136CK/
Not recommending those specifically but that combo would do what you need. A hotspot with a battery (it will be optimized for low power usage) and a battery bank to keep it "charged" and then you could even connect the battery bank to a cig lighter charger.
The only issue you might run into is if your car gets really hot somewhere like Pheonix, AZ the lithium batteries will struggle. You would need high grade ones in that case or they will eventually expand and fail.
Edit: You could also just get a cig lighter phone charger and run that to the hotspot. Depending on the car it wont work if its not on though. There are ways to change that. A stereo/security/remote start system installer for cars could help you here.