Skip to content
View in the app

A better way to browse. Learn more.

Power Forum - Renewable Energy Discussion

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Sunsynk 5kW - Charge from PV by day and discharge from batteries by night

Featured Replies

11 hours ago, Sarie Laing said:

Can the Sunsynk be programmed to start at night with 100% Battery power and only use the batteries if the grid is NOT available, for example, during load shedding. What worries me, sometimes at night, the Batteries start with 84% and when load shedding start at 20:00 or 22:00, I stress because the batteries drop below 50%. 

Untick use timer. By doing so the battery will only be used when the grid is offline 

  • Replies 156
  • Views 40.9k
  • Created
  • Last Reply

Top Posters In This Topic

Most Popular Posts

  • Hi. Please can you send me your inverter serial number so I can do a firmware update for you. 

  • yay, success... to all those that said, or even thought, the CT was incorrectly installed you were correct😳 I finally got a chance after work this evening to get into the main DB, what I call m

  • Just for interest and for any others that may be wanting to extend their CT coil cable... As part of checking the CT itself this evening I went back into the ceiling to check the cable there too as

Posted Images

Try set batteries to 100% for the whole night with battery shutdown on 50%. 

From my experience if there is no grid then your battery will deplete only when there are no mains until the shutdown value and revert back to grid and start charging. (but I last did any test like this a year ago, so cannot be certain) 

Test this and share more info here. 

Edited by Gareth_ZA

  • 6 months later...

I install 5kw sunsync inverter, 7kw battery and 7 x 455watt solar panels. I used more eskom  power with inverter. Used between 24 to 27kwh a day. Before install inverter i use 18 to 19kwh per day.

There is a back feed from solar panels.

Zero expert is ticked.

7 hours ago, Bloubul said:

I install 5kw sunsync inverter, 7kw battery and 7 x 455watt solar panels. I used more eskom  power with inverter. Used between 24 to 27kwh a day. Before install inverter i use 18 to 19kwh per day.

There is a back feed from solar panels.

Zero expert is ticked.

Various settings to be provided to be able to help. If setup for PV used and load 1st this should not happen. 

10 hours ago, Bloubul said:

I install 5kw sunsync inverter, 7kw battery and 7 x 455watt solar panels. I used more eskom  power with inverter. Used between 24 to 27kwh a day. Before install inverter i use 18 to 19kwh per day.

There is a back feed from solar panels.

Zero expert is ticked.

Can you share your settings screens, specifically your System work mode 1 and 2 screens

  • 4 months later...
On 2021/06/16 at 10:42 AM, YellowTapemeasure said:

Also, how much do you want to draw from the grid constantly (to avoid tripping a prepaid meter)?  If you don't want to draw anything, and you have a 5K inverter, then try this:

 

 

System mode screen3.png

 

I am a newbie. Had my SUNSYNK 5 (kv?) inverter, 1 battery and 10 panels installed a month ago. My SOC/V above is all set to 100% with all the Grid boxes checked. What that means is that whenever the battery goes below 100% it is always charged to 100% by the grid...On the second page the only box that is checked is the Zero Export one.

I have a few questions about the above picture. From 00h00 to 05h00, battery power will be used all the way even below 50% as there is (usually) no sunshine available ? From 05h00 to 08h00 (battery could now be at 40%) solar power will be used for consumption and not charging batteries and the rest of power needed will still be drawn from batteries. Between 8 and 5 the battery will be kept at 80% - charged by solar secondary after priority load has been taken care of. Between 5 and 6 you top up the battery to 100% from the grid. From 18h00 onwards you are basically just on battery.

 

  • 2 weeks later...
On 2023/05/25 at 12:23 PM, Walid678 said:

 

I am a newbie. Had my SUNSYNK 5 (kv?) inverter, 1 battery and 10 panels installed a month ago. My SOC/V above is all set to 100% with all the Grid boxes checked. What that means is that whenever the battery goes below 100% it is always charged to 100% by the grid...On the second page the only box that is checked is the Zero Export one.

I have a few questions about the above picture. From 00h00 to 05h00, battery power will be used all the way even below 50% as there is (usually) no sunshine available ?

 

If there is no grid, then yes, it will drain battery until the battery's setting for shutdown is reached:

image.thumb.png.94b376eb84c553c54b7002a81869a398.png

From 05h00 to 08h00 (battery could now be at 40%) solar power will be used for consumption and not charging batteries and the rest of power needed will still be drawn from batteries.

It depends, if there is enough solar power, then yes, otherwise it will use Solar power and grid. If no grid, it will use solar power and battery.

Between 8 and 5 the battery will be kept at 80% - charged by solar secondary after priority load has been taken care of.

Yes, but if there is excess solar, it will also charge the battery until 100%.

Between 5 and 6 you top up the battery to 100% from the grid. From 18h00 onwards you are basically just on battery.

Yep.

Response in line above, in bold.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.