aluminum ion battery

that'll never fly. same density as lead acid means same size per amp-hour. maybe it'll be useful if they can increase the density to match at least nickle batteries. lead is a lot cheaper than aluminum, and most applications using lead batteries wouldn't pay the higher cost for weight savings alone.

To me density means pounds, or to get technical slugs (Mass not pounds) and if that is the case Aluminum batteries I would excpet to b physically larger.
Still.... That is a LOT of cycles.

I also double checked Energy Density

Lead Acid is roughly half Li-On (Source Wikipedia)
And the Stanford cell is 20-40% of LiOn.

This is watts or units-energy per kilogram (or Slug if you like).

I guess "density" would mean mass to a mechanical engineer and energy density to an electronics engineer, at least in the context of a battery?

Curiously, I looked it up - lead and aluminum are about equal, as far as buying it on the stock market - $0.8 to $1 per pound over the last year. I always thought aluminum to be a far more valuable metal.

Maybe these batteries will have merit if the retail costs are similar to AGM or SLA per mass-unit and per energy-unit (whatever they may be :)

DEKA - East Penn rates the AGM batteries I bought at a huge number of cycles as well, using 1 cycle = 10% or less discharge with immediate recharge. Personally, my definition of a cycle is 50%-80% discharge, with 6-12 hours elapsed before a recharge.

So long as the aluminum batteries can be charged at low temperatures I'll be quite interested.

Fascinating that they can be rapid charged--a cell phone in one minute.

There seems to be a new headline about a new emerging battery technology about every 2 weeks.

I'll believe none of them until they can actually make inroads into the electrical storage market, viably.

Until then, these headlines are designed to cause increased Advertising revenue and nothing else, in my opinion.

By all means keep up the research, but the Media's hyping the newest latest and greatest distant hope is based solely on generating revenue.

That's why I am stubborn about the Lifeline.

When I did cycle life testing "According to Mex" I discharged the batteries to 3.0 volts @ a 10% total amp hour rate. This discoupled the load banks and enabled constant voltage charge of 14.8 volts which was left on for 24-hours. Energy transactions were recorded. Few battery brands made 50 cycles. Never bring a cat to a dog fight. The Delco Voyager called it quits after six cycles. All six of them. The Trojans and Picos lasted until high thirties early forties. Globe Union batteries did well. Group 24 BCI. A heart stress test is not done by having a patient relax in a Laz Z Boy and exercise a TV remote control. Unfortunately back then the RV car jars had 5% antimony and RV charging system voltage was too high.?

pianotuna wrote:
So long as the aluminum batteries can be charged at low temperatures I'll be quite interested.

Fascinating that they can be rapid charged--a cell phone in one minute.

That's a misleading quote that comes up a lot with new batteries.

To recharge a 2500-3000 mAh cell phone battery in a minute, you will need a crazy high amperage charger and a heavy gauge connection to the battery.

Most cell phones charge at 0.5C or 0.25C, half to quarter capacity. So it takes 2-3 hours for a full charge. To charge in 1 hour, 1C (3 amps), 30 min 2C (6 amps), 15 min 4C (12 amps!) , 7.5 minutes 8C (24 AMPS!) etc etc...

What the quote usually means is the test-tube battery charged in less than a minute. What they don't say is the test-tube battery has a capacity of 1 mAh.

I got lost there, but the main thing still seems to be that even if the battery can accept a huge number of amps at 50% SOC,

1. Where can you get a charger that will do that?

2. How big a generator do you need to run such a high amps charger?

3. How can you cart all that around when RVing?

Hi Mex,

Are you saying that Lifeline makes a great AGM battery that survived the "Mex Testing"?

MEXICOWANDERER wrote:
That's why I am stubborn about the Lifeline.

pianotuna wrote:
Hi Mex,

Are you saying that Lifeline makes a great AGM battery that survived the "Mex Testing"?

I'd like to know that answer too.