“Anyone has experience with Senergy Hybrid Inverter 6K ECO?”

I am currently researching hybrid inverters for residential systems in hot and humid climates (Vietnam) and have found the Senergy SE 6K ECO Hybrid Inverter.

Some specifications that caught my attention:

Efficiency: Photovoltaic to AC conversion efficiency up to 97.3%.

Operation mode: 3 smart modes – Self-consumption, Grid-tie and Backup.

Battery support: Works with Lithium and lead-acid batteries (40–60V), expandable up to 9 battery packs.

Durability: IP65 (dust and water resistant), LEXAN™ fire-resistant plastic housing meets US standards.

Usage features: LCD touch screen + remote monitoring capability.

In theory, this looks like a versatile unit that could reduce reliance on the grid and provide backup during power outages.

My question for the forum:

Has anyone here used this inverter (or similar models from Senergy)?

How does its real-world reliability compare to more established hybrid brands like Victron, Sol-Ark or SMA?

Are there any known issues with software, grid compliance or long-term durability?

For a household with a daily electricity usage of around 15–18 kWh, would a 6kW hybrid inverter be sufficient?

👉 The technical data sheet I found (for reference only, not for sale):

I would love to receive comments from members who have practical experience with this device. Thanks!

#Senergy #InverterHybrid #SE6KECO #GigawattSolar #EnergySaving #SolarPower
And spec sheet in English (via Google Translate):
https://gwsolar-vn.translate.goog/san-pham/inverter-hybrid-senergy-6kw-se-6khb-d1-lv-eco-6k-eco/?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp

Welcome to the forum Tien (?).

I do not know anything about the brand... Heat and Humidity can be very hard on electronics... There is an engineering rule of thumb that for every 10C over "room temperature" (I.e., 25C), the "thing" will age twice as fast (35C, 1/2 the life, 45C 1/2*1/2=1/4 the estimated life) . So keeping the electronics (and battery bank, etc.) in shade/well ventilated room, is a big help to extend life.

Another, possibly more important choice to make, is the battery bank... For a hot climate, Lithium Iron Phosphate (LiFePO4) batteries are usually the best choice (good life, very efficient batteries do not "self heat" and make hot operations "worse").

The downside with Lithium (even the "safer" LiFePO4 chemistry), is if they catch fire (wiring errors, something else in room catches fire, etc.)--Is that Lithium battery fires cannot be "controlled" with water or fire extingusers... The best you can do is put water on the fire to prevent spread (batteries are "sealed" and don't allow water inside, and Lithium fires react with water to create a very toxic mess). So if at all possible, you really want the battery bank (and possibly all support equipment/electronics/backup generator/etc.) to be in a separate building separated from inhabited structures/homes.

Not saying you will have a fire--Just the consequences from a Lithium (or generator fuel/oil/etc.) fire is so great, you should avoid installing inside the home.

Regarding sizing the inverter/battery bank... I highly suggest that you look at your loads and, if needed, find the most efficient loads you can, and reduce loads that you need. Conservation usually costs less that generating solar electricity. I.e., if you can cut your loads by 1/2 (efficient LED lighting, efficient refrigerator/freezer, efficient computers, etc.) will allow you to have 1/2 the solar power (panels, inverter, battery bank)--Less to purchase, and less to repair/replace down the road...

Purchasing something like a Kill-a-Watt meter (and whole house energy monitor) to figure out your peak loads, and average daily loads, is important. Example of USA based energy monitors...

https://www.amazon.com/s?k=energy+monitor

Once you have sized your loads... (say you need 18 kWH per day normal, and you only need 8 kWH per day if power fails), then we can "size the system" hardware.

You do have to decide if you are looking to reduce electrical power costs, or looking for backup/emergency power...

For example, the "simple" Solar Panels + Grid Tied inverter (no battery bank) can save money (assuming your electric utility allows GT Inverter solar systems).

Adding a battery bank (plus replacing the batter bank every ~5-10 years, replacing electronics every ~10+ years, etc.), these systems are more expensive, and frequently can cost almost as much (if not more) per kWH to "run" over utility power (what is your cost for utility power). For Off Grid solar, you generally have to over size the system to allow for seasonal weather changes (summer heat/AC costs, vs "monsoon season" bad weather and poor solar harvest).

The other option can be GT Solar+Backup generator if you only need backup power a week per year, or similar. Generators are not too expensive, but their fuel costs can be high (local fuel prices, can you run a Genset and store fuel in your location?). But may be a good option for rare power outages.

I will stop here for now. And translate above post:

-Bill

Translation: