Update after 1 year of use off grid, Growatt and EG4 (Gyll) batteries @DavidPozEnergy
Update after 1 year of use off grid, Growatt and EG4 (Gyll) batteries  @DavidPozEnergy
Uploaded June 2022 | Updated September 2026, 56 minutes ago
How is everything holding up after 1 year of use? What is the battery SOH State of Health? How many times have the inverters shut down? Overloaded? Nuisance tripped?
I've been running my Growatt inverters and Lithium batteries off grid for one year. They have been working great. In the video I describe pros and cons after one year of use.

The inverters are model 5000ES and purchased from Signature Solar. I have two in parallel for a total of 10kW of inverting capacity.

The batteries are Lithium, LiFePO4. Each battery is 5.12kWh of capacity in a server rack design. This mean my battery bank is just over 30kWh! My battery brand is Gyll, but that has been re-branded EG4 and is sold by Signature Solar.

Affiliate Links (Signature Solar):

Growatt Inverters, 5000ES: signaturesolar.com/growatt-48v-5kw-450vdc-stackable-off-grid-inverter/?ref=4_rHcgZ9x-TiF-#

EG4-LifePower4 48V 100Ah Battery: signaturesolar.com/eg4-lifepower4-lithium-battery-48v-100ah/?ref=4_rHcgZ9x-TiF-

EG4 LiFePO4 5120Wh with display: signaturesolar.com/eg4-ll-lithium-battery-48v-100ah/?ref=4_rHcgZ9x-TiF-

Circuit Breaker: signaturesolar.com/nadar-dc-circuit-breaker-48v-125-amp/?ref=4_rHcgZ9x-TiF-

Videos:
Building powerwall with 1 inverter: youtu.be/oMH3IwR0ZC8

First Battery Review: youtu.be/SYJ25izYSGc

Building Battery Bank over 30 kWh: youtu.be/89MyA7zPdYI

Growatt 5000ES inverter with auto transformer: youtu.be/yWUfvvSa3K8

Disclaimer:
My videos are in no way intended to be instructional "how-to" lessons. I am simply documenting my project for informational purposes. Property damage, personal injury, or death may result, even when following manufacturer's instructions. I cannot be held liable for such damage or injury. It is YOUR OBLIGATION to ensure that you are complying with any local and federal laws as well as code and permit requirements.

David Poz, LLC
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Update after 1 year of use off grid, Growatt and EG4 (Gyll) batteries

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