I am trying to find out what the AC input voltage range is for the AC70 when referencing the version purchased in Australia.
Our grid power in Australia is nominal 240V but can be as low as 225V to just over 250V pending your location.
I cannot find anywhere, what the acceptable working voltage is before the unit will trigger either a low or high input voltage error to occur.
Any assistance would be greatly appreciated.
Hi @DJR
most AC power adapters have a voltage range that is +/- the rated voltage. Would mean 230V - 250V. But i couldnt find it exactly in the official documents.
greetings
Erik
Thanks, however, I am actually after the engineering specifications on what is the lower limit and what is the higher limit.
@DJR
Lower limit 195.5V
Upper limit 253V
(Data provided by the tech team based on their calculations.)
@DJR Also in Oz and have the AC70 amongst others. I have tested the AC70 with a power meter as follows;
For the charging input settings - Silent 280W and Standard at 475W, I did not test Turbo. The specs are in the pic below. These results were from Grid and at the time I measured 240.9VAC.
I have also tested charging from a Gentrax 800W PSW generator, the W were 5-10W higher at Silent and Standard, the voltage from the Genny was 230VAC.
The third test I did was to charge the AC70 from the AC180 I have and vice versa using VAC charging. The results were similar to the genny, but the voltage was nearer 220VAC. All worked well. You should not get grid voltage much higher than 240V from our grid. A power meter is $20-30 Bunnings or Jaycar.
I was sent this when I asked the forum the same Q.
Re charging rates, it’s a bit like 4x4 towing loads, just because a 4x4 is rated to 3 ton, doesn’t mean you should. That’s why I don’t use Turbo charge, in fact I often use Silent as I have a 375W inverter on my 4x4 Aux battery. It will handle 270-280W, but not 470W. Slower charge rates are kinder to the battery.
As to Voltage, the manual does state 6A at 220 and 230VAC, but not safe limits, but as I mentioned I’ve had no issue with 241V. 
Thanks, Mandp and also Bluetti for the replies.
Disclaimer - Turbo mode charging is no issue, when needed, but it’s something I personally would not use as a constant high charging method. I’m rarely, if ever, in the position of the need to do so.
As I use the 4 X AC180’s and single AC70 in constant UPS mode I only ever have them set to Silent charge mode.
Great, my usual rule of thumb, charge at a W rate slightly above load W = “ad infinitum” lol. FYI I had solar installed at home last week, which meant a power outage whilst connecting the system. I had the AC180 on the TV/DVD-R, laptop, mobile charge. The AC180 on the NBN-WiFi, both in UPS mode and the AC200P running the house fridges. (Unfortunately no UPS on that).
All of the units never missed a beat.