Discussion:
Fast charging for forklifts

Anybody using this equipment? Does it work?
  • Posted 24 Mar 2006 10:55
  • Discussion started by alex_s
  • California, United States
Showing items 1 - 15 of 32 results.
Mick M:
It is sad that anyone for the purpose of profit or any other reason, expresses falsehoods and misinformation. First of all: I do not know what test you may be referring to, however, the Faztech test requirements are much more stringent than that of Enersys guidelines or that of the Battery Councel Internationals parameters. Their measurements are more precised and includes a more detailed requirement of that of the above listings. And must point out, true results reported even with the customer present and the local power companies participating, No misinformation.
Second: They do not use MOSFETS controls what so ever and here again your statements intent is to misinform the truth. Your IGBT "Switch" is very energy efficient, however, when you connect the battery into the charge process the efficiency level drops into the 50 to 70% level for the whole charger. Not so with the Faztech charger, it is the only charger that includes the battery into the charge circuit and allows a place for excess energy to be stored and reused.
Third: If you want to consider the Faztech a "fast charger" yes it is under powered compared to current fast chargers on the market. The Faztech "is NOT" and I repeat "Is NOT" a "Fast Charger" as defined by many manufacturers. However, because of it's far advanced technology and design, one of the side benefits is that it can charge a battery with a deeper charge in less time wtih NO significant heat rise. Perhaps you were comparing a 3kw unit with one of your 600 amp rated units. If this is the case, yes your charger would charge in less time with very signigficant heat rise than that of the much smaller and lower rated charger. This would be like comparing a volkswagen to a formula 5 race car.
The Faztech has the ability to build units in a modular design that can meet most application much more safely.
It doesn''t take a rocket scientist to realize that if you try to force a battery to accept 600 amps of energy and it will only accept 200 amps for storage, what happens to the extra 400 amps? It is waisted as heat energy and lost.
Fourth: Yes, there are not very many customers for Faztech right now because it is new, but the list is growing every day. This is a new proven technology and will soon be the premier system because it cares and works with the battery, lowers energy consumptions, and will provide long life for batteries.
If you really understood batteries, charging systems, electrochemical process's,
you wouldn't being trying to sling mud, but would embrace new concepts, performance and designs that actually work and I promise will improve.
If your mind is so limited, then I can see why you think Faztech is just smoke and mirrors.
  • Posted 8 Feb 2008 04:04
  • Reply by don_c
  • Utah, United States
discipline, empathy and integrity
I've seen the supposed test from Faztech. These test aren't even close to being Scientific or according to BCI-I-2 or BCI-I-4. If a standard charger took 3 hours to recharge the battery, then the Faztech may have taken 8 hours. Their chargers are very low power and have little if any proven success anywhere in the US. They have no US parts distribution and service distribution. They use MOSFETS, which tend to have lots of issues in the industrial market place, burning up from transients and lightning strikes, which isn't unusual in a distribution center or manufacturing facility that is located in the outskirts of civilization.

Other US manufacturers have used Mosfets as well in their fast chargers and have had a lot of problems. IGBT's on the otherhand are well accepted in industrial applications, first used 40 years agoin lift trucks and overhead crains, and are very energy efficient and robust. IGBT's have efficiencies of 93% or better and Power Factors near unity.

EnerSys has 2500 plus chargers in 400+ customer applications. We monitor usage through ever evolving data capabilities which are already maturing at over 4 years of usage. Find a list of Faztech customers and you'll still have more than five fingers to count with. In my mind Faztech is Smoke and Mirrors, they definitely aren't fast charging.
  • Posted 19 Oct 2007 03:53
  • Reply by mick_m
  • Pennsylvania, United States
A great charger can make a bad battery look better, but a bad charger will destroy any battery!
Everyone is still taking OLD technology, meaning ferro, SCR or IGBT and putting a new marketing package on it and selling it to a new victum every day. People that want to be serious about finding a solution needs to go back to school and study a little bit of physics, chemistry and electrical engineering and try to move and convert electricity so that it is much more efficient and cost effective to use. The only people I have seen do this is ZNRG or Faztech with the new adaptive wave charge technology. Test upon test, application upon application, this product has use electricity more efficiently, wisely and with much less energy. Why, because they have learned to work within the guidelines, equations and parameters of basic physics in converting and suppling electrical energy to a storage vessle more efficiently, less heat and reduced time frames.
And without modifying the battery to do so... I advise all to take a look at this technology, many power companies have and they like what they see.
  • Posted 19 Oct 2007 01:31
  • Reply by don_c
  • Utah, United States
There is something coming out that could be better than fast charge systems and the answer to the high cost of Hydrogen fuel cells. There is a company call MHD Green energy solutions that has been testing and starting to market a alcohol based fuel cell on board battery charger that can be used on any brand of forklifts.
  • Posted 18 Oct 2007 23:16
  • Reply by bear
  • Nebraska, United States
so it still needs an overnight charge even with the fast charge system (posicharge)
i could think of some customers who could benifit
but it doesnt help my 3 shift customers with 1 battery per machine (cheap customers who wont lay out for extra batteries)
  • Posted 22 Apr 2007 03:35
  • Reply by justinm
  • New York, United States
New York, New York its a heluva town..you know that The Bronx is up..and I'm Brooklyn down
I'm not trying to argue. I'm merely stating that customers have demanded of us to get involved with fast charging.
The sad truth is operators don't take care of their trucks, batteries or chargers. A very small percentage do.

As the only battery manufacturer of high capacity lift truck batteries, we totally believe in productivity savings from using the highest possible capacity batteries per cubic inch in a lift truck compartment.

Most fast charge applications aren't really heavy duty applications; therefore heat isn't a factor. Less than 10% of the fast charge market is trully demanding. The whole big three car market in fast charging don't trully fast charge. The big three see savings in not changing batteries out and optimizing on one third of the batteries that they normally require. They also don't have to pay battery room maintenance people or battery changers at $100,000 plus a year.(No lie with over-time and benefits) Safety savings alone on UAW Workman Comp benefits on battery changeout issues alone are worth the savings in going to fast charging.

As for cost, not all fast chargers cost 10 times as much as conventional chargers. 80% of our ROI studies show a ROI savings of.3 to.9 years by merely eliminating the extra batteries, because in most applications customers are going to get 4+ years out of their single battery.

Conventional battery rooms are operating or charging 24 hours a day, because the spares need to be charged and cooled. If you have 3 batteries per truck or pooled batteries, then the chargers are always charging. Fast charging may have higher peaks but that depends on the operation. Most customers stagger breaks somewhat, because they aren't shutting down their operations for breaks, it isn't productive. So the practice of 24 hour charging of conventional chargers is always putting back 5 to 10% overcharge everyday is wasteful for energy conservation. Whereas in fast charging, charging to 80 or 90% and reducing gassing is basically more efficient. The overcharge is only done on weekends. Fast chargers also can be a lot more efficient with much higher power factors(PF), because they use IGBT's(93%+efficiency and PF of near unity). SCR chargers have effieciencies of 83 to 89% and PF of.55 to.70. Ferros have efficiencies of 73% to 93% and PF of.87 to.91. Every manufacturers conventional chargers ratings are all over the specrum. Fact is IGBT's are much more controllable in profiling and saving energy. Infrastructure is a different matter. Our IGBT's can almost always co-exist on standard charger lines of 30 amp services, until you get to the 30KW or larger models. The competion fast chargers that use SCRs jump to 60 and 120 amp services.(A major cost difference in infrastructure cost).

One last thing about ANSI / OSHA standards. We never state on cutting back on standards, but charging one third of the amount of batteries usually requires less ventilation, and charging throughout a facility can reduce the need for that ventilation. We are required by OSHA to limit Hydrogen evolution to 1% before needing ventilation. We are very observant of that regulation. In my 15 years of application studies I've never seen a customer even with a battery failure to exceed 1%. 4% Hydrogen evolution would require charging in a closet or small sealed room with no ventilation. We don't promote that.

So as a customer, people need to do their due diligience and get the whole story. Training is necessary with fast charging, just as it is in conventional charging. If you have poor conventional charging practices then you need to rethink all of your processes, because down batteries or missed charges can mean down truck or no productivity with fast charging. Of course that can happen with conventional charging also, but it usually takes longer.