GS8048 + Lithium + LBCO

Dual Input, 120/240, stainless steel form factor design for unsurpassed surge capability
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PaulMillner
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Posts: 15
Joined: Tue Dec 10, 2019 6:10 pm
My RE system: GS8040A, four Samsung SDI ESS Energy Storage Battery 16S 60 Volt - Mega 3.3 kWh, Firman 5.5 kW natural gas electric start generator
Location: Berkeley CA
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GS8048 + Lithium + LBCO

Post by PaulMillner » Tue Sep 15, 2020 7:35 pm

Howdy,

Wanted to share an aha... my GS8048A came with firmware 1.5.4, April 2017 dated. Not sure why... it's less than a year old.

I'm running the Samsung ESS batteries, 16 lithium cells, battery range 49.6 to 65.6 volts. But 1.5.4 doesn't allow a battery disconnect voltage above 48 volts... a tenth of a volt per cell below minimum, assuming perfect balancing... that's battery damage territory.

Reading the release notes on the various firmware versions that have come since, it's not apparent that the LBCO, low battery cut out, got changed... but updating to 1.6.7, the LBCO maximum did improve... and I've set mine to 51.2 giving each cell an extra tenth of a volt wiggle room. :-)

Anyway, a report on a favorable outcome.

Paul

PS: What does the GS in GS8048A stand for, at least allegorically?

raysun
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Re: GS8048 + Lithium + LBCO

Post by raysun » Wed Sep 16, 2020 12:20 am

GS denotes Grid-interactive / Stand-alone capabilities.

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