1837 emergency back up products are offered for sale by suppliers on Alibaba.com, of which portable power stations accounts for 21%.
A wide variety of emergency back up options are available to you, such as solar panel, ac adaptor and car.You can also choose from 10kw, 5kw emergency back up,as well as from lithium ion, lithium, and lead-acid emergency back up, and whether emergency back up is mppt, no, or pwm.