my cheapo off grid system

[almac]

b4 splurging $1000 on new batteries after discovering SLI batteries never stop accepting charge till they burn, having one last spin with what i have already got, 250AH made up of 2 x 100AH deep cycle in series on the top shelf, 4 x 135rc (55AH) marine batteries in parallel on the bottom shelf in series with the 150AH trojan golf car battery on the left. then this is paralleled at the bus bar to make 250AH 24v. the 4 x marine batteries total 220AH so will discharge less than the 150AH golf car battery. DSCN0007.JPG

[Mike90250]

Damaged batteries are what never stop accepting charge current. A good SLI battery is just fine in a vehicle being driven and charged all the time (big rig truck, buses). Same for deep cycle batteries. They have fewer plates inside that can short or go bad, but they do eventually go bad too.

[SunEagle]

b4 splurging $1000 on new batteries after discovering SLI batteries never stop accepting charge till they burn, having one last spin with what i have already got, 250AH made up of 2 x 100AH deep cycle in series on the top shelf, 4 x 135rc (55AH) marine batteries in parallel on the bottom shelf in series with the 150AH trojan golf car battery on the left. then this is paralleled at the bus bar to make 250AH 24v. the 4 x marine batteries total 220AH so will discharge less than the 150AH golf car battery. [ATTACH=CONFIG]n304670[/ATTACH]

I understand your desire to utilize what you have before a major purchase. I only ask that you invest in a fire extinguisher and stay as safe as possible.

[Sunking]

Mike what was that you said about busting his chops and being too Snippy? OMG what a time bomb waiting to explode. If I was a moderator or owner of this site I would delete this thread and most everything this guy post to digital hell. Some poor fool might try to copy his work. Sooner or later someone is going to get hurt, and a good lawyer is going to hold this Forum responsible.

[ButchDeal]

b4 splurging $1000 on new batteries ....

You should be able to get a decent 24v 200a bank for considerably under $1000. I have a 200ah VRLA 48v bank that only cost me $1200. You are talking half that.

[ButchDeal]

Mike what was that you said about busting his chops and being too Snippy? OMG what a time bomb waiting to explode. If I was a moderator or owner of this site I would delete this thread and most everything this guy post to digital hell. Some poor fool might try to copy his work.

Darwin Award waiting to happen....

[Sunking]

You should be able to get a decent 24v 200a bank for considerably under $1000. I have a 200ah VRLA 48v bank that only cost me $1200. You are talking half that.

He lives in a Socialist Country. He cannot buy anything at reasonable prices.

[jflorey2]

b4 splurging $1000 on new batteries after discovering SLI batteries never stop accepting charge till they burn, having one last spin with what i have already got, 250AH made up of 2 x 100AH deep cycle in series on the top shelf, 4 x 135rc (55AH) marine batteries in parallel on the bottom shelf in series with the 150AH trojan golf car battery on the left. then this is paralleled at the bus bar to make 250AH 24v. the 4 x marine batteries total 220AH so will discharge less than the 150AH golf car battery.

With your wiring and state of your batteries you won't be able to make any predictions about what will discharge first. Generally the least damaged battery will take almost all the charge/discharge; that will then cause that battery to become damaged. The bizarro "4 in parallel with 1 in series" part is likely dead already.

Also I note that all that unprotected wiring is lying on a wooden bookshelf. All it would take is one dropped screwdriver (or even brushing against the wrong two wires) and you'll have a fire.

[Mike90250]

It's always nice to have an example of what not to do. With it all in the same thread, it's priceless. Even after a couple smoke events, he still keeps going.

[Sunking]

It's always nice to have an example of what not to do. With it all in the same thread, it's priceless. Even after a couple smoke events, he still keeps going.

True Mike, but you busted my chops on his other thread for being to SNIPPY. I remembered this post from last year. This guy is an extreme danger to himself. If he lives in a community with a FD is a danger to the public. It is a Rat's Nest and no OCPD to be found. Not to mention sulfuric acid on wood furniture on a wood floor.

Been a while since I took a chemistry class but organic materials and acid do not play well together. Basic recipe for an explosive.

[almac]

True Mike, but you busted my chops on his other thread for being to SNIPPY. I remembered this post from last year. This guy is an extreme danger to himself. If he lives in a community with a FD is a danger to the public. It is a Rat's Nest and no OCPD to be found. Not to mention sulfuric acid on wood furniture on a wood floor.

Been a while since I took a chemistry class but organic materials and acid do not play well together. Basic recipe for an explosive.

ok thanks for the fback on my latest battery configuration, sunking would you outline a basic set up using 4 x t105 6v batteries for a 225AH 24v bank? that would be 4 x batteries in series, the cabling needed and fusing. thanks,

having logged in and read the comments concerning the FIRE HAZARD my wiring posed , i immediately dismantled the set up , and until i buy 4 x t105 batteries , will use the 3 deep cycle batteries remaining with STURDY CABLING and CONNECTIONS., to give me some capacity of 150AH. 2 x 100AH deep cycle batteries in parallel , in series with the trojan 150AH golf car battery. DSCN0010.JPG
DSCN0011.JPG

[jflorey2]

having logged in and read the comments concerning the FIRE HAZARD my wiring posed , i immediately dismantled the set up , and until i buy 4 x t105 batteries , will use the 3 deep cycle batteries remaining with STURDY CABLING and CONNECTIONS.

Interesting. In what way do you think what you posted is better than your previous system?

[SunEagle]

ok thanks for the fback on my latest battery configuration, sunking would you outline a basic set up using 4 x t105 6v batteries for a 225AH 24v bank? that would be 4 x batteries in series, the cabling needed and fusing. thanks,

having logged in and read the comments concerning the FIRE HAZARD my wiring posed , i immediately dismantled the set up , and until i buy 4 x t105 batteries , will use the 3 deep cycle batteries remaining with STURDY CABLING and CONNECTIONS., to give me some capacity of 150AH. 2 x 100AH deep cycle batteries in parallel , in series with the trojan 150AH golf car battery. [ATTACH=CONFIG]n304875[/ATTACH]
[ATTACH=CONFIG]n304876[/ATTACH]

There are a few issues that I see with your system but the one that catches my eye is the connections between the CC and batteries.

I would replace those "clamp" type connectors. They do not make a solid connection and will increase the circuits resistance. Better to go with terminals on the end of the cables so they can be securely connected to the batteries.

[almac]

Interesting. In what way do you think what you posted is better than your previous system?

the cables that carry high current are 200 amp and short in length securely bolted onto the battery terminals.. i thought that was obvious.

[Sunking]

OK Almac I am going to try to help you. You might think I am being tough on you, and I am. No one on this Forum will do more to help you than me. I am trying to get your attention you have a problem on your hands. I will try to show you how to do this safely and actually work. Four things are jumping out at me.

1. No Over Current Protection Devices like fuses or breakers.
2. Improper wire/cable terminations. Example Alligator Clips
3. Batteries on and near wood.
4. Poor workmanship. Looks like a Rats Nest.

So let's start with the Big Item that posses the most clear and present danger, No fusses. Look at the diagram below. It will show you how to protect the wiring and how to connect it so as to force even charge and discharge currents to flow through the batteries. The fuse sizes are for demonstration purposes only and may or may not be what you need. In this example would be 15 amp Charge Controller and 1000 watt 12 volt Inverter. Your actual sizes will most likely be different.