Hi All 

My family and I have had enough and after many hours of research, we have gone ahead with an installation that we will improve over time:

• 5Kw Deye Inverter
• Dyness Dyness 5.1kWh Lithium battery
• 6 PANEL MONO 550W TONGWE

We are in the process of changing behavior, where we don't switch on Microwaves and Kettles during loadshedding.  The only concern I have is how do I maintain this system for a long life span.  How do the DEYE Inverter and Battery Warranties work

Edited May 26, 20233 yr by Bongani82

If you keep it low, by your behavioural change, running inverter lower than 75% and cycle batts beyween 90 and 60%, the system should last a very very long time.

Vital advice for looking after a substantial investment.

One person I know managed to damage his new 5kW inverter in 5 weeks by continually overloading it until it shut down by itself several times

A big fight with the supplier who, after looking at the log, saw what had happened.  His action may have voided the guarantee

On 2023/05/26 at 7:15 PM, Eurard said:

If you keep it low, by your behavioural change, running inverter lower than 75% and cycle batts beyween 90 and 60%, the system should last a very very long time.

Thank you, we will definitely change our habits and monitor continuously.  Picked up that Down Lights and Fluorescent lights consume quite a lot as well.  Will start converting all lights to LED lights, hopefully next year will add a second battery.

On 2023/05/26 at 9:07 PM, chrisc said:

Vital advice for looking after a substantial investment.

One person I know managed to damage his new 5kW inverter in 5 weeks by continually overloading it until it shut down by itself several times

A big fight with the supplier who, after looking at the log, saw what had happened.  His action may have voided the guarantee

Thank you, I will definitely keep this in mind because this kit is expensive and I am hoping for at at least a 5 to 8 year period trouble free

On 2023/05/26 at 6:16 PM, Bongani82 said:

Hi All 

My family and I have had enough and after many hours of research, we have gone ahead with an installation that we will improve over time:

• 5Kw Deye Inverter
• Dyness Dyness 5.1kWh Lithium battery
• 6 PANEL MONO 550W TONGWE

We are in the process of changing behavior, where we don't switch on Microwaves and Kettles during loadshedding.  The only concern I have is how do I maintain this system for a long life span.  How do the DEYE Inverter and Battery Warranties work

Might not make a real difference, but I'd set the inverter's battery and discharge settings to match the limits of the battery, and not just depend on the BMS to limit it.

For example, set to 50A or less charge and discharge on the inverter, and don't depend on the BMS cutting it off after a few seconds of being over the recommended limit. Other than that, if using the Time-Of-Use settings, set the system power less than 2.5kW peak at all times. At least until getting a second battery.

Dyness offers an extended warranty of up to 10 years if you register. I'd suggest doing that anyway because you don't know where your installer will be after 10 years. Or even after 10 months.

On 2023/05/26 at 7:15 PM, Eurard said:

If you keep it low, by your behavioural change, running inverter lower than 75% and cycle batts beyween 90 and 60%, the system should last a very very long time.

Do you mean 90 and 60 SOC or DoD? 

The tip about keeping the inverter < 75% is useful. Thanks. Suggests that oversizing the inverter is a good ploy. 

On 2023/05/26 at 6:16 PM, Bongani82 said:

The only concern I have is how do I maintain this system for a long life span.  How do the DEYE Inverter and Battery Warranties work

One piece of mundane maintenance is keeping the panels clean. They will accumulate grime over time. That won't break anything, but if left long enough it will effect system performance 

6 hours ago, GreenFields said:

Might not make a real difference, but I'd set the inverter's battery and discharge settings to match the limits of the battery, and not just depend on the BMS to limit it.

For example, set to 50A or less charge and discharge on the inverter, and don't depend on the BMS cutting it off after a few seconds of being over the recommended limit. Other than that, if using the Time-Of-Use settings, set the system power less than 2.5kW peak at all times. At least until getting a second battery.

Dyness offers an extended warranty of up to 10 years if you register. I'd suggest doing that anyway because you don't know where your installer will be after 10 years. Or even after 10 months.

Thank you, I have just registered the battery, and submitted the pictures, will wait for their response.  With regards to matching the battery limits on the Inverter, I will contact my installer to assist.  I am treating this thing like a new born baby right now, I am afraid of breaking anything.  

3 hours ago, Bobster. said:

One piece of mundane maintenance is keeping the panels clean. They will accumulate grime over time. That won't break anything, but if left long enough it will effect system performance 

Thank you for this advice, google search is recommending every six months...but I guess I can use my own discretion here as well.

https://www.zenenergy.com.au/knowledge-base/popular-topic/how-to-clean-solar-panels/

4 hours ago, Bobster. said:

Do you mean 90 and 60 SOC or DoD? 

The tip about keeping the inverter < 75% is useful. Thanks. Suggests that oversizing the inverter is a good ploy. 

Soc

But If you pull heavy loads, it will drop, so look at close to rest or low load.

Example, running my system load 300w I throughout the night drop to 52.7v which should be above the 60% soc.

All Im actually saying is just take care of the batts and they will take care of you for max cycle counts.

Edited May 28, 20233 yr by Eurard

50 minutes ago, Bongani82 said:

Thank you for this advice, google search is recommending every six months...but I guess I can use my own discretion here as well.

https://www.zenenergy.com.au/knowledge-base/popular-topic/how-to-clean-solar-panels/

My new panels are on for a week now and already visibly dusty, but then again having them above all other trees and structures puts them where the wind blows.

The key is using the system only for essential loads. Remember its a long term investment and ideally you would want it to service your needs for as long as possible. Battery DOD is crucial and ensuring your panels are kept clean regularly.

Just a note when cleaning them is to bot use hard brushes etc as these may damage the panels, I just spray water on them and that works - no scrubbing etc