24v 8S2P GBS -LFP300A bank but whats with the terminals?

Simi 60 · Jul 15, 2021

I think* I have decided on these GBS cells for our new 600ah house bank build but I am unsure as to why they have twice as many terminals as others.
Anything to be concerned about or is it simply a 1 is good , 2 is better thing?

* I keep flopping between a 600ah bank of these and an 840ah bank of EVE 280 for less coin but think the GBS would be a better more reliable product but have no evidence to support this.

Steve_S · Jul 16, 2021

Sinopoly, Winston also have more than two terminals and is not unusual for Huge Capacity cells. Follow the GBS Specs & Docs precisely. IF these are Grey Market (not an authorized GBS Vendor) I would be quite cautious. Once you cross 400AH only a "few" in general produce Huge Capacity cells and so the origin / vendor is very important. If buying directly from these companies (GBS, Winston etc) then you would be "assured" of getting what you pay for.

Simi 60 · Jul 16, 2021

Steve_S said:
Sinopoly, Winston also have more than two terminals and is not unusual for Huge Capacity cells. Follow the GBS Specs & Docs precisely. IF these are Grey Market (not an authorized GBS Vendor) I would be quite cautious. Once you cross 400AH only a "few" in general produce Huge Capacity cells and so the origin / vendor is very important. If buying directly from these companies (GBS, Winston etc) then you would be "assured" of getting what you pay for.

Thanks, if buying, the quote I got was from https://www.gbslithiumbattery.com/ so I would like to think legit.
But back to the 2 terminals.
As long as they provide enough busbars and bolts I don't really care but why two?

Bob B · Jul 16, 2021

2 pads = twice as much surface area to handle more current.

Marinepower · Aug 25, 2021

Simi 60 said:
I think* I have decided on these GBS cells for our new 600ah house bank build but I am unsure as to why they have twice as many terminals as others.
Anything to be concerned about or is it simply a 1 is good , 2 is better thing?

* I keep flopping between a 600ah bank of these and an 840ah bank of EVE 280 for less coin but think the GBS would be a better more reliable product but have no evidence to support this.

Simi,

I bought the EVE 280 for my boat but now regret doing so. I only have a small bank of 4 of these but the compression, the terminals, the care needed to ensure no movement or leakage of the electrolyte is a PIA. They work fine as advertised, but are too fragile and need too much customization for a mobile application IMO. I am space limited and that was a factor. If you have a lot of space and can get some good metal boxes and welded terminals you may get a better result.

Did you ever buy ( or contact the seller) of the GBS cells?

Simi 60 · Aug 25, 2021

Marinepower said:
Simi,

I bought the EVE 280 for my boat but now regret doing so. I only have a small bank of 4 of these but the compression, the terminals, the care needed to ensure no movement or leakage of the electrolyte is a PIA. They work fine as advertised, but are too fragile and need too much customization for a mobile application IMO. I am space limited and that was a factor. If you have a lot of space and can get some good metal boxes and welded terminals you may get a better result.

Did you ever buy ( or contact the seller) of the GBS cells?

I did contact GBS but for the amount the financier was prepared to spend I was getting borderline amp hours.

We went with the eve280 with welded studs and have plenty of space to securely mount in a vessel that doesn't get knocked around.
65 tonne sucks up the bumps, down below in what was the cold room (now battery/inverter/storage room) you wouldn't know what was happening outside.
Box will be composite build, I don't see compression as an issue personally

I hope I have made the right decision.
.

Marinepower · Aug 25, 2021

I am sure you made the right decision Simi. Your boat is much larger than mine ( 7 ton vs 65) . There is nothing wrong with the cells. Mine have been preforming well so far. The best part is how quickly they can recharge in comparison to AGM.

As a precaution, i would make sure they are in a spill proof battery box and there is a non conductive barrier (ie plastic, fiberglass) btw each cell.

24v 8S2P GBS -LFP300A bank but whats with the terminals?

Simi 60

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Steve_S

Offgrid Cabineer, N.E. Ontario, Canada

Simi 60

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Bob B

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Marinepower

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Simi 60

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Marinepower

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