Do not run engines in a closed area: Proper ventilation is critical to avoid CO poisoning
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Furthermore, the electronic components, including the lithium-ion battery cell and the integrated circuitry, are fully compliant with CE and RoHS standards
Sci Total Environ 369:6975 Khlifi R, Olmedo P, Gil F, Hammami B, Chakroun A, Rebai A, Hamza-Chaffai A (2013) Arsenic, cadmium, chromium and nickel in cancerous and healthy tissues from patients with head and neck cancer
Battery life is always going to be a problem, no matter what you read on the company website, theres just no way you can store enough power into such a small package
Using these devices can bring more smoke inside from elsewhere in the house