I made this video as I received an Amazon request asking about the sound, but I now strongly suggest you do not buy a Bluetti Product as the customer service is abysmal. If you read the comments and replies I am having with somebody who has experienced exactly the same fault as I, namely that the whole battery charge can disappear over night even when it is switched off. Bluetti's initial response was that this is quite normal. So, hardly a glowing endorsement for a battery storage product. Further to the above, the battery storage problem was resolved with an update, and I am consequently more than happy with it. My advice now is to buy a Bluetti in preference to an Ecoflow I also have, though half the size, its fan is twice as loud and even worst, comes on and stays on for no apparent reason, especially when the daylight has turned on the Ecoflow, but not enough to promote a charge, and with no output either, why does its fan need to come on in cold weather and stay on. Ecoflow sent me a replacement, but its still the same.
Негізгі бет Bluetti AC200MAX Fan sound
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