Thread: Solar Panels

Flooded deep cycle batteries are somewhere between 7000 and 9000 THB if I remember. It also depends on how many Amperehours they have. AGM and Gel batteries more expensive. Our system is 400/230V.
Generator, as I said, is for backup and will not run much if everything works as it is supposed to. It is expensive, like you say, and it is a security and peace of mind that I like. You can, of course, decide you can do without that and save the money. But I know, with our first system, how it feels when the system goes down and you do not what happened. Following Murphys law this usually happens a rainy, dark night.
Implementation into the system of the genny is fairly straight forward. Power lines go to the ATS (Automatic Transfer Switch) box and then to the inverter. If the power goes down, f.e. if the batteries go below 10.7V, the ATS will tell the genny to start. And when the batteries are recharged, the ATS will restart the inverter and shut down the genny. So I do not have to do anything manually.
At least that is how it should work. But now our genny is too small and cannot charge the batteries. It will start from the ATS to feed the house so we will have power until the sun has recharged the batteries. Then the genny will shut down.
Hope I made myself clear. :-)

Originally Posted by Racin

Flooded deep cycle batteries are somewhere between 7000 and 9000 THB

The battery for truck 12V is 240Ah, when 2 pcs in parallel, it doubles the Ah. An alternative solution...

Is the present batteries capacity enough for the average power of the solar cells?

But now our genny is too small

Wouldn't be better to increase the solar cells (some additional roof or just on ground) and the batteries as well instead of thinking on increase of the generator?

Believe me when I say batteries in parallel are never a good idea. There is a way to do it correctly but it still is not a good idea.
ie. when one gets stuffed how will you know which, and more importantly how soon will you suss it?

SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank

Originally Posted by Lantern

Believe me when I say batteries in parallel are never a good idea. There is a way to do it correctly but it still is not a good idea.
ie. when one gets stuffed how will you know which, and more importantly how soon will you suss it?

SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank

nonsense, its the same as anything else if u know wot ur doin

Originally Posted by Lantern

Believe me when I say batteries in parallel are never a good idea.

???

BTW, the battery forklift 1.5 ton on my picture #125 I bought 13 years ago, it was second-hand that time at least 10 years old.
Now, still working with my 2x4 batteries 12V, lifting 3 tons - that's why an additional balancing needed - and/or a help from another forklift when too heavy load - we are in Thailand...

Originally Posted by lob

nonsense, its the same as anything else if u know wot ur doin

Indeed. If you know what you’re doing.
People who know what to do don’t put cells in parallel because if there’s a short in one string the other string can discharge through the short.
The result is somewhere between ‘not good’ and ‘very not good’.

Originally Posted by Klondyke

The battery for truck 12V is 240Ah, when 2 pcs in parallel, it doubles the Ah. An alternative solution...

Is the present batteries capacity enough for the average power of the solar cells?



Wouldn't be better to increase the solar cells (some additional roof or just on ground) and the batteries as well instead of thinking on increase of the generator?

'
Not a good idea to use start batteries. They are not made to discharge deeply and would soon die.
Our present setup with panels and batteries is adequate. The generator is for backup when there is no sun for more than a day. It should then feed the house as well as charge the batteries. As it is now, it can feed the house but cannot charge the batteries.

Originally Posted by Racin

Not a good idea to use start batteries. They are not made to discharge deeply and would soon die.

Would soon die? If you read what I wrote after usage over 10 years?
BTW, did you ever see the golf carts (or other similar carts) what batteries they are using?

This is an informative video which may be of use

Originally Posted by docmartin

Indeed. If you know what you’re doing.
People who know what to do don’t put cells in parallel because if there’s a short in one string the other string can discharge through the short.
The result is somewhere between ‘not good’ and ‘very not good’.

and where is this short taking place. in a previous life, i spent four years coupling up six and twelve volt batteries in series and parallel, also banks of batts in series and paralell. the fumes are something else tho.

just remembered . the last time i fitted a large bank of batts was scumamton air port back up.. too long ago but a lot of batts, cant remember the configuration now, but more than likely series and parallel. lead acid, japanese ,,yala,? some name like that.

Originally Posted by lob

and where is this short taking place.

In a cell or a battery.
Resistance issues are usually high ohms because of sulphation and so on, but low ohms can happen when plates collapse.

In my experience truck batteries do not last long... they they are built to start engines.... so their initial energy output has to be high.... solar batteries are somewhat different.... they are built to store as much power and release them in an even timing.... something like that.

For ordinary Flippers like me solar batteries are viewed as more expensive than truck batteries, but they are durable, reliable and more stable.

BTW, did you ever see the golf carts (or other similar carts) what batteries they are using?

If they have any brains they would be using Trojan T105's
I can honestly state that in 33 years of selling many thousands I have never had one warranty issue.

Originally Posted by GracelessFawn

In my experience truck batteries do not last long... they they are built to start engines.... so their initial energy output has to be high.... solar batteries are somewhat different.... they are built to store as much power and release them in an even timing.... something like that.

Yeah, pretty much like that, I think.

Truck and car batteries are made to throw out a lot of amps over a very short period of time. They have thin and hard plates.
Solar or traction batteries are made to slowly release power over a longer period of time. They have thicker and softer plates.

Originally Posted by Lantern

Truck and car batteries are made to throw out a lot of amps over a very short period of time. They have thin and hard plates.
Solar or traction batteries are made to slowly release power over a longer period of time. They have thicker and softer plates.

Thats sounds right....

Also, solar panels work great in flipperville as we get loads of sunshine here.

Originally Posted by Davis Knowlton

70 in January.

Bump

Davis is it Happy Birthday? and how are the Solar plans?

Originally Posted by docmartin

Indeed. If you know what you’re doing.
People who know what to do don’t put cells in parallel because if there’s a short in one string the other string can discharge through the short.
The result is somewhere between ‘not good’ and ‘very not good’.

FFS

[QUOTE=docmartin;3861933]In a cell or a battery.
Resistance issues are usually high ohms because of sulphation and so on, but low ohms can happen when plates collapse.[/QUOTE

so u have a short/collaps of a cell. ... wheres the difficulty in identifying that batt.

are u an x signalman by the way.