Is a MSW inverter safe for AC input?

Product Discussion BLUETTI AC Series
1

Wondering if anyone is using a modified sine wave inverter to power the AC charging input on their Bluetti product (an Elite 200 V2 in my case), and have you experienced any problems?

I understand the efficiency loss and other issues, and that a pure sine wave inverter would be safer, etc., so my question is strictly as stated… does anyone have any personal experience using an MSW inverter to power the AC charging input?

Thanks!

2

Hello @smiller,
Welcome to the forum.
 
Using a modified sine wave (MSW) inverter to power the AC charging input on your Bluetti Elite 200 V2 can present some challenges. While some users might have used MSW inverters without immediate issues, there are important considerations to keep in mind:

  1. Reduced Charging Efficiency: As you stated - MSW inverters produce a waveform that approximates a sine wave but with abrupt transitions. This can lead to less efficient charging, causing the Bluetti to take longer to charge or not charge fully.
  2. Increased Wear on Components: The choppier waveform can place additional stress on the Bluetti’s internal components, potentially reducing their lifespan over time.
  3. Potential for Malfunction or Damage: Sensitive electronics are typically designed to operate with pure sine wave power. Using an MSW inverter might cause malfunctions or even long-term damage to the device.
  4. Electrical Noise and Interference: MSW inverters can introduce electrical noise, which might interfere with the operation of the Bluetti or any connected devices.

Given these potential issues, it’s generally recommended to use a pure sine wave inverter for charging devices like the Bluetti Elite 200 V2. If opting to use an MSW inverter, it’s advisable to monitor the device closely for any irregularities during charging.

For the most accurate guidance, consider reaching out to Bluetti’s customer support (@BLUETTI) to see if they advise against using MSW inverters with their products.

1 Like
3

@smiller
I can’t guarantee but it’s likely workable.
The Elite200V2 supports manual adjustment of voltage frequency. However, it is certain that this won’t be stable: your MSW inverter’s waveform is unstable and has nothing to do with Elite200V2.

4

Understand. Some switching power supplies tend to be tolerant of MSW so was wondering about the AC supplies in the Bluetti units, but in the absence of a clear OK it is probably best to employ only a pure sine wave source.

Thanks for the comments.