Rabbit
New Member
- Joined
- Nov 19, 2019
- Messages
- 85
After a quick search I've found no previous mention of this problem, so... Last night I for the first time used my Bluetti EB3A as an uninterruptible power supply (UPS) for my CPAP. About 2-3 hours into my night's sleep it shut down, showing an "overload" indication despite the fact that my CPAP only draws at most 40 watts. I contacted a friend who runs a computer-related business and was experimenting with two EB3A's as UPS's. He said that both had failed recently in exactly the same way under light loads, and that as a result he was no longer considering using them more widely for this purpose. Of the units I personally know of that're being used in this way that's a 100% failure rate, in my case on the very first night and on an important piece of medical equipment. (I have pretty severe apnea, and my head is still pounding as the direct result of this failure.) All units involved were fully software-updated.
This part is pure speculation. I noticed early on that in UPS mode the EB3A seemed to generate a small amount of heat even when there was no substantial electrical load on the device and it was fully charged. Perhaps the "overload" protection is triggered by heat, and this waste heat (from whatever unknown source) is enough to trigger it after a "soaking" period of hours?
Whatever the cause is, Bluetti specifically markets the EB3A as suitable for CPAP's and I'm far from the only CPAP user that can potentially die in the event of failure. (This is why I set up a power-outage backup in the first place.) I think they have a Big, Big Problem here and may not be aware of it yet.
This part is pure speculation. I noticed early on that in UPS mode the EB3A seemed to generate a small amount of heat even when there was no substantial electrical load on the device and it was fully charged. Perhaps the "overload" protection is triggered by heat, and this waste heat (from whatever unknown source) is enough to trigger it after a "soaking" period of hours?
Whatever the cause is, Bluetti specifically markets the EB3A as suitable for CPAP's and I'm far from the only CPAP user that can potentially die in the event of failure. (This is why I set up a power-outage backup in the first place.) I think they have a Big, Big Problem here and may not be aware of it yet.
Last edited: