x2 on the DEKA AGM, I have used the 14/16/20 in various projects and they perform well. If it's for a "nice day" car make sure you leave it on trickle/battery tender.
x2 on the DEKA AGM, I have used the 14/16/20 in various projects and they perform well. If it's for a "nice day" car make sure you leave it on trickle/battery tender.
Had this battery for 2 years. Never left me down. Notice no difference from the stock one. Running it in a 95 neon, with very few accessories.
I ran the cheaper of the two Walmart lawn mower batteries in my admittedly low compression 2.0 A20 Honda for the entire time I owned it. The first one lasted a bit over three years. Not bad for $20.
I have a lawn and garden tractor battery from AutoZone in my 190E. It's 2 or so years old and has lived a tough life - when I installed it, the 190 had a signficant cold-start issue. Then last summer I started a Microsquirt install and finally got it running in Nov or so, during which it endured, many, many, many start attempts, and no actual on-the-road time. It finally got back on the road in March, and is still kicking now. Never has an issue starting the 2.3. There's a pic in my Microsquirt thread of my battery tray redo.
Additionally, i want to add that since Walmart sells full size car batteries for $49, i put actual car batteries in both my riding mowers. So the only things I've actually used a lawnmower battery in are cars. 
In reply to parker :
Just following up on the question I posted earlier about terminals.
I was concerned because lawn & garden batteries have blade-style terminals, as opposed to the fat posts on car batteries.
Turns out the lawn & garden battery I bought had holes drilled through the posts. So, I was able to just screw the stock terminals in place.
Yep
The lawn tractor batteries come in 3 different AMP ratings, the highest ratted one will cost a little more, but still cheap.
If you don't need to start in really cold weather, it should be enough, although not as much margin as a larger car battery.
I used a lawn tractor battery in my Fiesta race car. Normally it was fine, not sure if a bigger battery would have really help when things were weak anyhow. Cheap light and can buy a replacement almost anywhere.
AutoZone now sells the Bosch LiFePO4 batteries. For $119 you can get a 14Ah battery that weighs <5 lbs. I would go with one of those over any lead-containing battery.
Buy one of these when they go on sale- https://batteryhookup.com/products/unbalanced-a123-36v-module-with-48-26650-anr26650m1-b-lifepo4?variant=34660427169954
Cut it up to make it 12V instead of 36 (which is actually pretty easy), put in some heavy duty wires, and be done. In theory, that would be capable of 600A continous, and has the same voltage as lead batteries.
That would be a very light battery. Even an 8P set up would be capable of starting a car at 400A continous.
alfadriver (Forum Supporter) said:Buy one of these when they go on sale- https://batteryhookup.com/products/unbalanced-a123-36v-module-with-48-26650-anr26650m1-b-lifepo4?variant=34660427169954
Cut it up to make it 12V instead of 36 (which is actually pretty easy), put in some heavy duty wires, and be done. In theory, that would be capable of 600A continous, and has the same voltage as lead batteries.
That would be a very light battery. Even an 8P set up would be capable of starting a car at 400A continous.
That seems like a great price for those. I have a ryobi 40v 5aH battery that crapped the bed (ryobi sent me a new one for free since it was during the first year), and I was considering taking it apart and reconfiguring for 12v since it's probably only a couple bad cells.
alfadriver (Forum Supporter) said:Buy one of these when they go on sale- https://batteryhookup.com/products/unbalanced-a123-36v-module-with-48-26650-anr26650m1-b-lifepo4?variant=3466042716995
if anyone is doing this in Southern California I am in on the buy to help save some on shipping !
In reply to californiamilleghia :
Once they get another shipment, I'm getting 5.
In reply to alfadriver (Forum Supporter) :
sign up for their newsletter ,
they just sent me this,
https://mailchi.mp/b2541cf17fe4/alert-brand-new-batteries-available-now?e=b11421860a
In reply to californiamilleghia :
I saw that, and have been very tempted to get it. But they are not as compatable as the LiFePO4 batteries....
For a 12V car system, they just won't work- too much voltage if run in 3S, too little for 4S. If you were 24V, you could run 7S.
I'll wait for the A123 modules.
Oh, and since I got two questions already, in the research I have done, stacking 4 3.2V LiFePO4 batteries in series gives you the exact same voltage as a lead acid battery- from peak to valley. But you get to use the whole thing as opposed to lead acid.
And for those who are concerned with safety, this chemistry isn't known for catching on fire. I'd still run a battery management system...
So, fancy (read, anything other than lead acid) batteries are beyond me, but I have a racecar that needs a battery, light is good, small is better. Needs to start a sbc, only other electrics will be lights and a radiator fan. Would one of those $20 l&g deals cut it? I see lots of folks used them in cars with baby engines, but this is the biggest of the small v8s chevy ever did.
The battery I used (link in the 1st post of this thread) is rated for 435ca / 350cca. In theory, that should be enough to start a Chevy 350.
chaparral said:AutoZone now sells the Bosch LiFePO4 batteries. For $119 you can get a 14Ah battery that weighs <5 lbs. I would go with one of those over any lead-containing battery.
Link?
Sounds like a good app for an underhood battery to supplement a rear mounted battery.
Pete. (l33t FS) said:chaparral said:AutoZone now sells the Bosch LiFePO4 batteries. For $119 you can get a 14Ah battery that weighs <5 lbs. I would go with one of those over any lead-containing battery.
Link?
Sounds like a good app for an underhood battery to supplement a rear mounted battery.
This one? It's 4AH not 14AH, and only rated at 200CCA.
Can anyone make a suggestion for a lightweight battery for my M5? I was thinking of a Odyssey PC680 or a Braille B2317RP
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