Large AGM battery options

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Lowly
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Real Name: Greg Heins
Location: Melbourne, Aust

Large AGM battery options

Post by Lowly » Tue, 14 Oct 2008, 19:36

I converting a mazda 121 bubble car using an advance forklift sepex motor running on a nominal 72V bus. I am hoping for about a 30km range.

I calculate that I will need about 150Ahr batteries for a reasonable life (75% discharge at the 1hr rate). I am not ready to make the lithium leap so am planning on using AGM batteries (or maybe Gel batteries if they will suit the application).

There does not seem to be much discussion on this forum about AGM possibilities.

I would prefer to avoid paralleling batteries which limits the possibilities somewhat. Those that I have found are listed below. Most of these have reasonable published data.

Odyssey(PC 2250 - AGM) 126@20hr www.extremebatteries.com.au $885
Exide(G120 - Gel) 130@20hr www.energymatters.com.au $757
Absorbed Power(GT12-150C -AGM) 150@20hr www.agmsaustralia.com $569
Fullriver(DC150-12- AGM) 150@20hr www.energymatters.com.au $560
Firststart(FS-12V 150A/H - AGM)     154@20hr www.firststartbatteries.com.au $530

Other batteries that seem to be used but that I cannot find in a large enough format are: Genesis, Panasonic, Remco, Concorde, Henda, Diamec, Lifeline

Can anyone recommend which way to go with for AGM or Gel batteries? I am not willing to pay for the Odyssey or the Exide as I am getting into lithium prices.

Regards

Greg

The summary above was taken from my comparison spreadsheet:
http://spreadsheets.google.com/pub?key= ... l26fcfCKZg

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Johny
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Large AGM battery options

Post by Johny » Tue, 14 Oct 2008, 19:54

When I was considering a DC system this site looked OK. You are doing the right thing asking. Get someone to verify any suggestions - including this one.
http://www.batteryguru.com.au/agm_deep_cycle_39.html

I also had some good sites from here:
http://energy.sourceguides.com/business ... Name.shtml

a4x4kiwi
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Large AGM battery options

Post by a4x4kiwi » Tue, 14 Oct 2008, 20:35

Hi, Check the Greensaver batteries. I have just imported 55 of them without a problem. It will be a few months until I get to test them.

See my blog for details.

They have 100 and 210 Ah units that may suit you needs. The contact I have there is Lily lilyhu@greensaver.cn I have found her to be very responcive and helpful. Do post the spec sheets when you get them. You should find they have a very low Peukert factor.

Regards,
Mal.
Silicon is just sand with attitude.

Blog: http://malfunction.faed.name

Lowly
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Real Name: Greg Heins
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Large AGM battery options

Post by Lowly » Tue, 14 Oct 2008, 23:20

Mal,

Thanks for the suggestion. I read your thread when you got them and saw that AMPrentice was looking into some larger batteries for a low voltage conversion. Being a bit lazy, I sent him a PM to let me know what he found out - any news yet AMP?

Cheers

Greg

Goombi
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Large AGM battery options

Post by Goombi » Thu, 01 Jan 2009, 02:40

LOWLY ,

I use AGM batteries in my Barina and so far i cannot complain-- No maintenance and the safe and accepted from transport people.
My system Is 96 volt, comprising of 8 x100amp Units my driving is around 60-100 klm distance and top speed just under 80 Km/h The but mostly normal city driving 40-60 km/h.Batteries charge easy and all at the same time(done a test) and top voltage reaches 13.8 volt aproximate price for a battery this size is 268$ plus transport.. I chose "Powersonic" but there are others similar.Available in diferent amperages 100-120-150-200 amp

TropicalEV
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Large AGM battery options

Post by TropicalEV » Thu, 01 Jan 2009, 16:53

Hi guys,
        I'd be interested in finding out a bit more on these AGM batt's as well. ZEVA sells " optima yellow top" 12v 55ah for $330 each. I like the sound of Goombi's 100ah for $268 MUCH better! Where did you get them from?
And how much do they weigh? I'm planning an EV bike.
" I haven't failed..I've just found 10,000 ways that it doesn't work" Thomas Edison while inventing the lightbulb

jpcw
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Large AGM battery options

Post by jpcw » Thu, 01 Jan 2009, 17:06

You can get some fairly cheap batteries on ebay. I got all my batteries about a year ago at over $100 each off the sell price just by asking for a discount for 10. Looking at the seller I got them from they have some reasonable prices on AGM's at the moment.

12V 110AH super heavy duty AGM SLA deep cycle Battery - $304.70
12V 100AH super heavy duty AGM SLA deep cycle Battery - $279.40

http://stores.ebay.com.au/best-battery-online

(and no I don't get a cut, just got great service from them)
“The best way to predict the future is to invent it,” Alan Kay 1971

Goombi
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Large AGM battery options

Post by Goombi » Thu, 01 Jan 2009, 19:34

Tropical.... "Powersonic 100amp"
The batteries weigh 31.5 kg -Size -L/W/H 305-168--228 Brisbane quote contact me if you need some --may do a bit better in price-- $268

antiscab
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Large AGM battery options

Post by antiscab » Fri, 02 Jan 2009, 00:30

Goombi wrote: LOWLY ,

I use AGM batteries in my Barina and so far i cannot complain-- No maintenance and the safe and accepted from transport people.
My system Is 96 volt, comprising of 8 x100amp Units my driving is around 60-100 klm distance and top speed just under 80 Km/h The but mostly normal city driving 40-60 km/h.Batteries charge easy and all at the same time(done a test) and top voltage reaches 13.8 volt aproximate price for a battery this size is 268$ plus transport.. I chose "Powersonic" but there are others similar.Available in diferent amperages 100-120-150-200 amp


Goombi,

have you actually done a range test in your barina?
how are you determining state of charge? (by AH or V?)
are these the batteries you are using:
http://www.power-sonic.com.au/pds/20080 ... G12100.pdf

i would be very surprised if you were able to get 100km range on 4.3kwh, even at 50kmh.
my scooter barely achieves that at 60kmh.

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells

Goombi
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Large AGM battery options

Post by Goombi » Fri, 02 Jan 2009, 01:37

My Full charge is 107-109 Total Voltage devide by 8 batteries= 13.5-13.7volt First test took me 86 km and i still was on 10.8 volt per battery.. My assumption was that extra 15 km would not have been much problem. I am also taking into consideration that Gympie area is very hilly and some steep ones too I lack the luxury of a flat city streets,when travelling at 60 km would only take 40-60 amps and thus my estimate is quite correct.. The Controller is compatible with the motor and don't allow huge drainage My max is 200 amp and performance is just right... and you would be surpriced

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