GivEnergy inverter specs

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up_north

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Could somebody with more expertise than me look at this please. Attached shows the specs for both the GivEnergy 3.6 and their 5kw inverters. I was thinking that although our array will only be 4kw, should I go for the 5kw inverter rather than the 3.6, in order to make better use of the battery after solar generation stops. But then I see this which suggests that no matter which of the inverters I went for, the maximum available on battery only is 3.6kw?
 

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Thanks but, from what you said on someone else’s post ’Home Battery Charging’, won’t a 5kw inverter provide (up to) 4kw from the panels and the remainder from the battery if that amount of demand is needed? A 3.6kw will draw the remaineder from the grid.

I think this is a different thing to the limit of 3.6kw available from battery alone?
 
It does seem that the battery is a limiting factor, maybe a BMS issue. Look at other inverter makes, my Growatt has a maximum of 3000w on the battery supply but that can be added to solar off the roof to get to the 6000w max output. The Victron I'm getting will run 5000w continuous off the battery.
 
John - I think in that respect Givenergy and Growatt are similar. The figure I’ve circled is the amount the inverter can discharge from the battery - 3.6kw. So I’m presuming that the 5kw inverter can output up to 5kw but only 3.6kw can be from the battery. This suggests that at night time,when there is no solar, both the 3.6 and 5kw inverters are actually restricted to 3.6kw, similar to the Growatt?
 
John - I think in that respect Givenergy and Growatt are similar. The figure I’ve circled is the amount the inverter can discharge from the battery - 3.6kw. So I’m presuming that the 5kw inverter can output up to 5kw but only 3.6kw can be from the battery. This suggests that at night time,when there is no solar, both the 3.6 and 5kw inverters are actually restricted to 3.6kw, similar to the Growatt?
Yes, but my plan B will have an additional 5kW of inverting power sat behind it all LOL
 
John - I think in that respect Givenergy and Growatt are similar. The figure I’ve circled is the amount the inverter can discharge from the battery - 3.6kw. So I’m presuming that the 5kw inverter can output up to 5kw but only 3.6kw can be from the battery. This suggests that at night time,when there is no solar, both the 3.6 and 5kw inverters are actually restricted to 3.6kw, similar to the Growatt?
It certainly looks like that, check out Solis equivalents
 
It certainly looks like that, check out Solis equivalents
Yeah - I’ve seen Solis and also Solax and they seem a bit more flexible in this respect. Although Solax seems unusual in the they work with much higher voltage batteries.
 
Yeah - I’ve seen Solis and also Solax and they seem a bit more flexible in this respect. Although Solax seems unusual in the they work with much higher voltage batteries.
I prefer Solis because it has a decent screen on the inverter, but Solax has a better app. Both work with most batteries
 
I prefer Solis because it has a decent screen on the inverter, but Solax has a better app. Both work with most batteries
I‘ve now been given a quote for a Solax based system and the specs on the hybrid inverter show a minimum battery voltage of 80v and maximum of 30 amps. The battery in the quote is 100v.

So decisions decisions.
Givenergy with 9.5kw/h battery with higher start up voltage and maximum 3.6kw from battery.
or
Solax with 11.6kw/h battery with lower startup voltage, go G99 and get 5kw from battery….but £1200 more expensive.
 
I‘ve now been given a quote for a Solax based system and the specs on the hybrid inverter show a minimum battery voltage of 80v and maximum of 30 amps. The battery in the quote is 100v.

So decisions decisions.
Givenergy with 9.5kw/h battery with higher start up voltage and maximum 3.6kw from battery.
or
Solax with 11.6kw/h battery with lower startup voltage, go G99 and get 5kw from battery….but £1200 more expensive.
bigger is better in my book
 
3.6 is probably a better match for 4kW of panels. Spec for the 5kW is disappointing.
Apparently some have their 3.6 upgraded to 5.0 by firmware change (through Givenergy) due to stock issues of the 5.0 - which would suggest there actually isn't any difference other than software.
 
Apparently some have their 3.6 upgraded to 5.0 by firmware change (through Givenergy) due to stock issues of the 5.0 - which would suggest there actually isn't any difference other than software.
The 5kw inverters I've encountered are physically bigger than 3.6kw models
 
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