Transformer inverters

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Transformer inverters

Postby Sundance » Mon May 12, 2014 12:01 pm

I have recently discovered 12V inverters that are transformer based rather than the usual electronic controlled inverters. They also include battery chargers. They promote higher power surge ratings. Has anyone any comments/opinions on these inverters. Website is ... e-inverter
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Re: Transformer inverters

Postby Tracker » Mon May 12, 2014 12:27 pm

Folk here have been eating them for breakfast, lunch and Dinner .. :idea:

and finding ways of making them work better than original..

Lots of fun to be had.. ;)

PS, as from that thread, the greatest fun starts when taking old transformer Grid-Inverters and converting to battery inverters..

I am not yet convinced of the benefits of battery charging, because I have my mind stuck on using a separate Solar-Charge-Controller.

BUT - a wonderful suggestion is that you can ac-couple an existing GCI-PV to some of these Transformer/Inverters and they will convert the SURPLUS AC power to battery charging.. :roll: whilst the Battery Inverter is providing the power reference..
That is the Holy Grail of PVers, to be able to just connect a Grid-PV (or many??) to their inverter and have the best of BOTH worlds.. :D
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Re: Transformer inverters

Postby davidg » Mon May 12, 2014 4:24 pm

Sundance wrote:They promote higher power surge ratings. Has anyone any comments/opinions on these inverters. Website is

Yes.......................the efficiency of them is not great "Nominal Efficiency >86%(Peak)" and it's typically lower than that under normal use.

Like "tracker" says and provides the link to the thread he has pointed out, you will find essentially information about the similar units at much better prices and then how to "fix"them so they are actually reasonably efficient.

If fiddling with electronics is not your cup of tea, then it is well worth considering using inverters such as the Selectronics SP-Pro range or maybe SMA Sunny Island or another similar brand that is actually efficient out of the box, keeping mind that there are differences in the flexibility of what the various brands can do. 8-)
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