Best batteries that money can buy...

Re: Best batteries that money can buy...

If you're patient, a new aquious ion battery is about to become available. It's predicted they will have a very long cycle life, no problems with DOD or absorptions, require little or no maintenance, will be cost competitive with lead acid batteries, and will be very safe and reliable to operate.

Here is there website: http://www.aquionenergy.com/

You can email them for more technical information about the batteries performance and an update on the manufacturing progress. Sounds promising!

Re: Best batteries that money can buy...

stephendv wrote: »

I'd still stick with lead acid, low SG OPzS with recombination caps. Hoppecke has a good reputation, but not cheap:

http://www.hoppecke.com/content/view/full/140

http://www.hoppecke.com/products/accessories/aquagen_r_premium_top

Do you have a list of pricing for these? This sounds like a new product. Are they currently available?

Re: Best batteries that money can buy...

stephendv wrote: »

Hoppecke the company has been around since 1927, but I'm not sure that their products are available in the americas. The OPzS is a type of battery construction and doesn't belong to any one manufacturer, it's a German acronym meaning something like: stationary, armour plated, tubular plates. Many different manufacturers make OPzS batts; AFAIK only hoppecke offer the recombination caps with theirs.

I looked at the specs and they have an optional electrolyte recirculation system, which means that it won't stratify and therefore could go longer between absorptions. Looks very neat. But they still have all the undesirable lead-acid qualities - slow charge acceptance rate at higher SoCs and necessity to do the absorptions. This greatly reduces the efficiency of the system.

Re: Best batteries that money can buy...

Blackcherry04 wrote: »

I think these are pretty much the same type batteries. I priced a 2V 300 amp hr and they were $268 each + shipping from Wisconsin . I think they were filled with 1.265 electrolyte, I guess you could specify what you want.

Looks the same, but, based on your quote, much more expensive. And no electrolyte recirculation system

Re: Best batteries that money can buy...

Blackcherry04 wrote: »

I think these are pretty much the same type batteries. I priced a 2V 300 amp hr and they were $268 each + shipping from Wisconsin . I think they were filled with 1.265 electrolyte, I guess you could specify what you want.

http://www.sbsbattery.com/products-services/by-product/batteries/batteries-flooded-wet-cell-batteries/flooded-wet-cell-batteries-stt-series-flooded-2v-cell.html?gclid=CLmZoJKAsroCFadFMgodDX4Acg

Yeah they look very similar. Rated life is a bit less 1200 cycles, whereas the hoppeckes are 1500. Interesting info on their brochure about the tubular design lasting 30% longer than flat plate (taken with a grain of salt- I'm sure trojan/surrette say the same about flat plate )

Re: Best batteries that money can buy...

fca1 wrote: »

hi i now have OPzv cells forklift "gel" from exide ... 1 year old and still good ...
But I only have 255ah at c5 so maybe 300ah at c20 ..

Warning, pedantry ahead: If they have an "O" in the name then they're stationary cells, not forklift. The forklift version would be called PzV for gel, and PzS for flooded. Not sure on the cycle life of the PzV vs. PzS...

Browsing the hoppecke site, they also have a LiOn solution for industrial applications: http://www.hoppecke.com/content/view/full/1951 2500 cycles at 80% DoD!

Re: Best batteries that money can buy...

northerner wrote: »

The Aquion S10 battery stack has a cycle life > 3000 cycles, useable SOC window to 100 %, self discharge rate is < 2% per month, and they have a round trip efficiency at C/20 rate of >85%! And they won't cost nearly as much as lithium batteries.

In fact, test cells have shown no degradation in capacity in the 3000 + cycles that these cells have been put through.

Thanks for sharing about those Aquion batteries. I just did some reading about them and they look very impressive. I'll be interested to see pricing when they are released.