AGM Batteries

I got my HGL120 from LMC in Newcastle for about $280 - dang terra, that's a good price !!!

However, I can't recommend LMC www.lakecomm.com.au/ highly enough - great service, great advice - nice guys.

Also remember that Gee-Tek prices don't include GST and have pretty hefty shipping charges. Still good prices but worth keeping in mind.

Jonathan

Yes good point Jonathan however in this instance total price was $235.08 Inc GST delivered free to Port Melbourne or Melbourne as agreed by Keerin Black. So very happy as my remco 100ah cost me $269 and I had to pick it up.

Hi Derek,

Hope you can answer a question for me.......can AGM batteries be used for cranking? It seems everyone I talk to has a different view on this. I will only be using it to start a RAV4 so I would think the load would not be that great. Many people on the forum here say they use them to crank without a problem. The main reason I want to go this way is so I don't have to go down the path of a dual battery system.

What is your opinion??

Phil

Have a look at the CCA (Cold Cranking Amps) rating for the AGM - make sure it is at least as big as your existing battery.

Most are around 900 cca. Rav 4 no problem.

Hi Derek,

I have been looking at the PS-12750 see data sheet www.power-sonic.com/ but it does not have a CCA rating, although it say it will deliver 750 amperes for 10 sec or 225 for 7 minutes which makes me think this would be fine....humour me if I am wrong in assuming this :-)

Phil

Yes that sounds right for a 75 a/h battery.

My 90 a/h ones are 900 cca

So let me see....the figures I stated (750 amperes for 10 sec) equates to 750 CCA??

CCA is defined as "the amount of current a battery can provide at −18 °C for 30 seconds and maintain at least 7.2 volts".

The capability of a battery drops to about half at this temperature, so a battery rated at 900CCA would be able to deliver closer to 1500 amp at 25 degrees.

So does this mean the battery described above will have no issue cranking the RAV???

I suppose the RAV4 would actually draw around 100 amps on starting, so the battery will certainly start it, without shortening its life drastically.

All this means is that when the battery gets old and it's -18 degrees, it won't work as well as a Starting Battery :-)

No one would buy it as a starter ,, maybe maybe not , I use a Fullriver 80amp AGM HGL as the starter in our 80 series turbo diesel , been in there for the last 2yrs and never a problem. The written/factory specs are not always the be all and end all in "real" use.