#145816  by Mark
 Tue Oct 30, 2018 1:52 pm
I'm going to need to charge (from AC), from time to time, a notebook, bluetooth speaker, and maybe an 18V battery pack for a power tool.
I will not need more than 300W and I aim to get a pure sine wave model.

There are many advertised on Aliexpress, but I'm not sure I would trust that what I got was a true PSW.

There's this one on TradeMe
https://www.trademe.co.nz/motors/carava ... 44866c8340

Does anyone have an informed view on this?
 #145818  by scubadoo
 Tue Oct 30, 2018 2:19 pm
Mark

I have been using one of these to power our fridge for the last 4 years. It has never been turned off.

Other wattages available. Just a satisfied customer.

https://www.trademe.co.nz/motors/carava ... 7333aa4047

https://waveinverter.co.nz/shop/power-inverter/300w/

To be fair our no name Trademe $101 1000W pure sine wave inverter has helped toast a lot of bread and crumpets over the same period powering our equally inexpensive The Warehouse $9 750W toaster.
 #145822  by Nut17
 Tue Oct 30, 2018 3:25 pm
I agree with Neville, Mark. The guy from Waveinverter has been around for a while now and on Neville's advice I purchased one of the 300w PSW units to run our Samsung fridge. This has been in continuous use for the last 15 months - With the internal cooling fan disconnected :shock: (too noisy) and is still operating perfectly. probably worth the extra $20 for a known product ?
 #145828  by Bricar4
 Tue Oct 30, 2018 4:06 pm
I agree with Chris . I have the same inverter running our fridge, tv, CPAC machine
With the extra $29
Cheers
Brian
 #145829  by Mark
 Tue Oct 30, 2018 4:57 pm
I think I'm probably going to take a punt on a cheaper on (like Neville's toaster job) after all, it's not as if my needs are "mission critical" like providing ice for our G&T's :-T
 #145841  by DarrenM
 Wed Oct 31, 2018 6:13 am
I went a different way, all DC chargers. Unless you want an inverter for other things it didn't make sense for me to go from 12/24 to 240 and back again.
Really just AliExpress buck converters replacing the little transformer on the 240V plug, taking my 24V and putting out exactly the voltage and current each device needs.
There is another thread on here somewhere about charging vehicle batteries using such a device
I have a few of these http://s.click.aliexpress.com/e/b4LmdNky
Got one set up at 9.5V 1.5Amp for my Bluetooth speakers, a 12V power pack slow charging at half an amp , a couple at 5 and 5.5 for other silly little devices and rechargeable batteries
Also use one of these to charge my laptop http://s.click.aliexpress.com/e/cV9OsZf6 , its a Buck/Boost and gives me 19.5V 90W from 12 or 24 so also works in my car
Everything else is USB
 #145843  by Andrew and Debbie
 Wed Oct 31, 2018 7:32 am
When we changed to our new fridge we copied what Scubadoo and Chris did, so we have the same fridge and same inverter as them. Why reinvent the wheel came to mind, so what we have works well, like their fridges do. I have found that the guy at Wave Inverter is very good to deal with.

Cheers,
Andrew
 #145854  by Mark
 Wed Oct 31, 2018 12:15 pm
I agree with you, Darren. Where at all possible we should go for a DC-DC solution.
My needs preclude this:
Our HP notebook has a proprietary plug/socket for which I have been unable to find a DC-DC equivalent;
I will need to charge a Ryobi One 18V battery to run an inflator for an inflatable kayak.
Needing an inverter for these two means it makes more sense to use the supplied AC power supply to charge a Fugoo bluetooth speaker rather than buying a DC-DC power supply capable of 19V specially for this.

So our needs are quite different from those running fridges: very much occasional use.
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