Should my batteries and solar have a load ?

[StuM]

Originally Posted by goboatingnow

Your solar is not in series with your batteries

Ain't commas great
Let me rephrase that for him:
2 Duracell flooded golf cart batteries in series, with 200 watts of solar panels

[StuM]

Originally Posted by PaulCrawhorn

Something there is wrong, and nothing to do with the cells themselves, some other circuitry, or faulty connections...

I suspect it is the cells - the brain ones

[sailorboy1]

How helpful ☹️

[Baronkrak]

Originally Posted by PaulCrawhorn

You think the 100Ah batt is only capable of delivering 5A of current to a load?
...

Yes, if you wishes to use a 100Ah deep cycle battery as a deep cycle battery.

Originally Posted by PaulCrawhorn

And the 90Ah pack can only deliver 1.3C? Have you tried to pull more?

120A maximum as per Victron specifications, recommended continuous 80A. That would be a silly way of wasting more than 3000 dollars. It is also not to be used as a start battery.

[StuM]

Originally Posted by Baronkrak

120A maximum as per Victron specifications, recommended continuous 80A. That would be a silly way of wasting more than 3000 dollars. It is also not to be used as a start battery.

Hmmm, Here's a set of specs for a Victron 90Ah battery:
https://www.orionairsales.co.uk/vict...0ah-6925-p.asp


Maximum continuous discharge current 270A
Recommended continuous discharge current ≤90A
Maximum 10 s pulse current 900A

[Uncle Bob]

Originally Posted by Baronkrak

Yes, if you wishes to use a 100Ah deep cycle battery as a deep cycle battery.




120A maximum as per Victron specifications, recommended continuous 80A. That would be a silly way of wasting more than 3000 dollars. It is also not to be used as a start battery.

Sport, time to stop digging that hole.

[StuM]

> You think the 100Ah batt is only capable of delivering 5A of current to a load?

Originally Posted by Baronkrak

Yes, if you wishes to use a 100Ah deep cycle battery as a deep cycle battery.

Do you even know what is meant by a "deep cycle battery" ? Your statement is meaningless. Hint: it has nothing to do with limited amps.

Typical 100AH 12V deep cycle batteries are specified to have a 5s maximum discharge rate of around 1000 Amps!

See here for example:
https://www.amazon.com/Renogy-Batter...075RFXHYK?th=1

And for more regular use, most battery manufacturers provide tables showing deep cycle battery capacity at various C rates down to C3, so they are obviously designed for that discharge rate. For a 100Ah battery the C3 rate will typcially be in the vicinity of 70Ah i.e. 23.3 Amps fo 3 hours

[Baronkrak]

Originally Posted by StuM

Hmmm, Here's a set of specs for a Victron 90Ah battery:

Here's a set of more relevant specs for my Victron 90Ah batteries.

Models available until sold out
- 12,8V/90Ah, PN: BAT512090410 (last sale expected 2019 Q1)
- 12,8V/100Ah, PN: BAT512110510 (last sale expected in 2018 Q2, this model was only recently introduced)
- 12,8V/160Ah, PN: BAT512116410 (last sale expected in 2019 Q4)
See E-Order for availability, note that the actual last sale date may vary widely from above mentioned dates.

https://www.victronenergy.com/upload...s-Smart-EN.pdf

[StuM]

Originally Posted by Baronkrak

Here's a set of more relevant specs for my Victron 90Ah batteries.

https://www.victronenergy.com/upload...s-Smart-EN.pdf

Nope, thre's no mention of a 90Ah battery there.

Also, it's worth paying attention to the usual usage of house batteries and the meaning of the word "continuous" when discussing the maximum output of a battery.

Hint: a few seconds or even minutes of high draw are hardly classed as "continuous draw"
Many high draw appliances such as induction plates,microwaves etc are pulse loads, they do not draw a continuous current.

[thomm225]

So Mr. OP since as I used stand it you will be keeping this boat for a while you may as well go ahead and get a Victron (Bluetooth) Controller.

I had one before, but it didn't have Bluetooth.

The Victron gives you so much information right there on your phone and/or laptop.

I just installed (and mounted) mine yesterday.

Its a Victron 75/15 Solar Controller.

The on unit light displays are a tad different than my old one so it took a while to get everything working and the Bluetooth and hard wired displays to come up.

Laptop is on wire hookup to the Victron and phone Bluetooth.

It shows I got 60 watts out of my 115 watts worth of panels yesterday. One panel faces up and the other the horizon unless I move it.

Looks like I should have closed that shade better before taking a picture of my laptop display.

[Baronkrak]

Originally Posted by StuM

Nope, thre's no mention of a 90Ah battery there.
.

You must have missed it.
Models available until sold out
- 12,8V/90Ah, PN: BAT512090410 (last sale expected 2019 Q1)

Deep Cycle Batteries have the combined benefits of a true deep cycle and calcium/calcium maintenance free technology and they are sealed maintenance free for worry free operation. Deep Cycle Batteries are called upon to deliver small amounts of current over continuous periods, hours, or days, rather than seconds. These batteries are specifically designed to withstand the rigours of deep discharges and long recharges. They have excellent performance in hot temperatures and under severe use conditions.

Many days of autopilot and Navigation lights.

[StuM]

Classic cut and paste from the first google result for "deep cycle".with no comprehension.


The "calcium/calcium maintenance free technology" is a dead giveaway.
That will have come from a site talking about Lead Calcium batteries. It's totally irrelevant to the vast majority of deep cycle batteries.

[Baronkrak]

Originally Posted by StuM

Classic cut and paste from the first google result for "deep cycle".with no comprehension.


The "calcium/calcium maintenance free technology" is a dead giveaway.
That will have come from a site talking about Lead Calcium batteries. It's totally irrelevant to the vast majority of deep cycle batteries.

Not to me.

[PaulCrawhorn]

Originally Posted by Baronkrak

Yes, if you wishes to use a 100Ah deep cycle battery as a deep cycle battery.

I'm sorry, but that is just stupid. Show me just one lead batt data sheet that specs that.

[PaulCrawhorn]

Originally Posted by Baronkrak

Not to me.

Lead Calcium are not suitable for long term deep cycling.

Basically a southern hemisphere scam, very dodgy distribution channels, overblown claims, no reputable manufacturer behind them