Thread: Deep cycle batteries

If you read bradtot's post it was a deep cycle calcium battery. The capacity was not stated.
The battery is probably around the 90 Ah size and limiting the current to 20A is i would say not such a bad thing with a calcium battery. The problem bradtot describes is however unlikely to be resolved simply by using the DC/DC but will probably improve the situation some what.

Drivesafe: ...the battery NOT the charging device...
read my post again, that IS what I said. The DC/DC will cap it to 20A in this case.

I would not call A 20A DC/DC a toy. 20A can be far too much for many batteries.

Any way your constant personal remarks have made this forum somewhat unpleasant. I therefore shant come back to this thread. So be my guest, you may have the last word.

This is a forum by the way. Maybe you could look that up in a dictionary. It is a place to meet and discuss different points of view and reach a consensus. Not to riddicule and diminish ay opinions you don't like.

I really am a little dismayed that your replies always contain belittleing, demeaning, personal slurs just because I choose to put forward a different view to yours. With your title of moderator, i would expect you to set a positive example and not lead the villification and defamation.

james

James
My calcuim battery is a AC delco and is 83ah and 683 cca
and states 14.8 volts maximum charge.
All I know is at the moment it is being charged and kept charged by the dc dc convertor. At this stage I have not been camping or have flattened the battery enough to see if the configeration I now have will be any good for what I want it to do, time will tell.
Thankyou BOTH for the responses.
Brad

Zwitter, whether this is the last word or not is little concern to me but if you go back and read your own postings you will see that you were the one that started the cryptic remarks or is it a case with you that you think you can say what you like and no one else has a right of reply?

Yes it is a forum and as such, people’s opinions will differ, that is the nature of a public forum or again is your opinion the only one that counts?

Cheers

Hi Bradtot, my argument is not that these devices don’t work, it is that in most cases I think you will find that better results can be achieved without using them.

Cheers

I'm about to install a second battery in my P38A. As there is no room under the bonnet, I'll be installing my second battery in the spare wheel well where my LPG tank is also located.

For this reason, I wanted a sealed battery that would be reasonably rugged, so I bought a $99 100AH AGM battery from Coda. I hope I did the right thing.

I realise that the length of the cable run is a problem, I hope to minimise the voltage drop by using a fairly heavy cable.

On the subject of testing batteries, some years ago I was the manager of a couple of Telstra's international gateway (telephone/ telex/data/submarine cables) buildings. All power systems in the building were maintained by my staff. In addition to the very large 50 volt 3000AH wet cell battery banks, we had a number of very large UPS systems to for those systems that required 240 volts.

All the UPS had to do was maintain power until the diesel alternator sets came on line after a power outage - usually within 30 seconds.

One day we had an outage and the diesels were a bit slow coming in. The UPS were unable to hold the load for even a few minutes. The batteries were stuffed and we didn't know it even though we monitored and recorded the batteries SG and voltages weekly.

We then began a new method of monitoring the batteries by looking at the internal resistance of the batteries. We did this by looking a the AC ripple (from the chargers) on the battery. We found that good batteries had low ripple.

When we checked several other sites where we had the same brand (Fullman) of batteries, we found that they were also stuffed.

So it seems that SG and voltage don't always tell the full story.

Ron

Originally Posted by p38arover

On the subject of testing batteries, .......
................ The batteries were stuffed and we didn't know it even though we monitored and recorded the batteries SG and voltages weekly.

We then began a new method of monitoring the batteries by looking at the internal resistance of the batteries. We did this by looking a the AC ripple (from the chargers) on the battery. We found that good batteries had low ripple.

When we checked several other sites where we had the same brand (Fullman) of batteries, we found that they were also stuffed.

So it seems that SG and voltage don't always tell the full story.

Ron

mmmmmm........interesting, you'd have thought you had yourself well covered by testing WEEKLY by means of Specific Gravity AND taking a Voltage reading!

Mate your mad putting a battery in the same area as your gas tank, and besides the transport dept will have your guts if they see it. Taxis once played with the idea of putting batteries in the boot so the battery could be spared from the underbonnet temps that kill their battery. The transport dept would not approve fitment of batteries in the boot. I would check before you go and fit it or you might wipe out your insurance and your life.

Originally Posted by bellaposs

Mate your mad putting a battery in the same area as your gas tank, and besides the transport dept will have your guts if they see it. Taxis once played with the idea of putting batteries in the boot so the battery could be spared from the underbonnet temps that kill their battery. The transport dept would not approve fitment of batteries in the boot. I would check before you go and fit it or you might wipe out your insurance and your life.

sorry but if this is correct why has the new ve commordore got the battery in the boot and the ve can still be put on LPG

also i think you will find the lpg tank is vented to the out side of the car by LAW