Detailed Full PowerChair Related ONLY Menu HERE
Detailed Wheelchair Accessible Vehicles ONLY menu HERE
Detailed Menu of Everything else HERE!
VW Caravelle VR6
BUILT ULTIMATE POWERCHAIRS:
2 | 3
My VERY Modified Off Road & All terrain DO ALL
| 2 |
Goes Wrong Power Wheelchairs
Drive your Powerchair by Radio Control
Powerchairs & Range
Off Road DO ALL Indoor & Outdoor Powerchairs
Off Road ONLY Outdoor Powerchairs & 4x4
Manual or Electric Wheelchair?
Why ALL Powerchairs
NEED to be Off Road Capable!
Choosing a Suitable Powerchair
AND ELECTRICAL (POWERCHAIRS & SCOOTERS + MOTOR VEHICLES):
Batteries for Both Vans & Power Wheelchairs
Inverters & Chargers
Very flexible charger!
Fast Charge Your Power
Which batteries to buy
FROM A WHEELCHAIR" VEHICLES:
Grand Caravan 1
Grand Caravan 2
Dodge Grand Caravan 3
Dodge Grand Caravan 4
Latest 2008 2009 2010
Disabled Converted Dodge Chrysler And Voyager Minivans
Suzuki Wagon R
Kia Sedona - soon!
USED VEHICLES & OTHER
Disabled Adapted Cars
& DRIVE BY TRANSFERRING:
Grand Caravan can be used to transport up to 4 Wheelchair Seated Occupants
Citroen Berlingo - soon!
Fiat Multiplas (Wheelchair
passenger travels in the front)
Kangoo ASSIST (wheelchair
passenger transfers & drives)
Puncture proof tyres
Run Flat tyres
Tyre Weld Aerosol
Hand Controls Manual
Hand Controls Electronic
Van / Car Door openers
Van / Car Wheelchair Tie Downs
Used Disabled Equipment for sale
How to lose weight FAST!
Email about modifying powerchairs
Keep it looking new 1
Cars are a Joke!
& About Me
Lithium Ion Batteries for Powerchairs and Scooters.
Lithium based batteries offer HUGE advantages in powerchairs and scooters and
are available right now.
ADDED >>> HERE - NEW!
MY lithium powered powerchair. Times have
changed!!! Lead is dead...
factors on Powerchair and Scooter such as range, size, and speed is all because
the traditional Lead Acid Deep Cycle that has traditionally been used
It is the weak
link in the chain. Faster or smaller lighter powerchairs are not possible using
lead acid technology. That's the thing that stops 8 or 12 mph powerchairs having
any decent range or power with a heavy adult. And the thing that makes
powerchairs so big and heavy.
This is one battery manufacturer of many. The
future is already here and powerchair manufacturers are not using it.
Much like 25 years of Ni-Cad battery
technology, or Nickel Metal Hydride. They just keep doing whet they did every
Powerchairs still use mostly brushed motors
when brushless technology with much improved efficiency has been around
for 20 years for e.g. No pressure to move on.. They have things too easy.
above are Lithium Ion Phosphate batteries.
They cure that power/weight problem and have been available for a year or two now.
24 sized ones for e.g. as used in most full sized powerchairs, are only
half the weight, offer
double the range, have a
much lower self discharge rate, and can be
discharged thousands of times down to 100 percent rated
capacity. Compared to the traditional lead based batteries that the powerchair
manufacturers fit as standard. They are not cheap. But last much longer so
mostly offsetting the additional cost.
So apart from
doubling your range and making faster higher performance powerchairs and
scooters they could also last about 4 times longer in service.
And they can be
charged using your existing stock wheelchair multi stage charger amazingly! They can also
be fast charged if you prefer at very fast rates.
Unlike the Lithium Polymer batteries
that I use
500 Radio Controlled helicopter, or the lithium Ion batteries in my laptop
these new batteries are intrinsically safe to use. That's
pretty important in a wheelchair where you are sat on top of them!
helicopter Lithium Polymer batteries can burn or explode if overcharged. Quite
violently. Bad idea in a powerchair!
Lithium Phosphate ones cannot. What's more the voltages are
extremely similar to our trusty old lead based batteries. So you can use them
In other words
they are a kind of straight swap! I cant get hold of a set yet, since I would need to buy large numbers
of them but I have tested a smaller capacity (same voltage) Lithium Phosphate packs for voltage
compatibility with my Penny and Giles Wheelchair Controllers.
BCI Battery Sizes, Group 22, 24, 34,
fine from freshly charged down to fully discharged other than the battery
meter/fuel gauge reads a little screwy! Which was expected of course.
easily be fixed by a tiny bit of programming work at the manufacturers end of
things. Or for now just ignore it. It works and works well contrary to what you
may read elsewhere on an a supposed "experts" site.
There is a guy
in China using a stock Invacare Arrow Powerchair that emails me often that does
wheelchair "mileage" marathons.
He made his own packs up from the same
type of cells (lithium phosphate) and gets 90km real world usage per charge
easily. He uses ping batteries packs from eBay! (Google it!)
Now as usual I am going to be doing what the
manufacturer or powerchairs and scooters should be doing and will be going
lithium powered! My own better
designed powerchair is here
and I am ordering a bunch of 24v batteries
(Lithium Ion Phosphate) from this guy
Its quite possible to connect a bunch of those
24v packs of cells together in parallel to give me a much bigger capacity battery then the
standard group 24 lead acid ones currently occupying that battery space!
give me all the advantages of the green lithium batteries batteries in the image
above. I would just buy a set of those but they will only sell in bulk!
Same problem the guy in china had. Then I can fit faster motors, have
better range as well as longer battery life!
If I were a manufacturer it would be a
different matter. They could supply those in new chairs today (and a year ago) and
offer replacements as
they have the buying power.
But instead as usual we get excuses about "development" and
controller problems and differing voltages. And comments about how long it will all take...
Its just a smoke screen. Its not cheap but it works great right now.
a bunch of these connected together in series is something you can do at home
and get the same benefits today until I can find a reseller of the green ones in
Its safe technology and works with existing scooter and
powerchair controllers right now (with an inaccurate "fuel gauge") This is
because the state of charge is measured by sensing battery voltage off load.
This isn't exactly the same with this chemistry, and it starts slightly higher,
and drops slightly lower when discharged. So just ignore it! You will have much
more range and greater "usable" range anyway since they can be discharged lower
than lead acid batteries.
Should you be thinking of building a "pack" from these which is
perfectly practical here are the standard powerchair battery sizes in detail!
BCI Battery Sizes, Group 22, 24, 34,
For charging these new LiFePO4
batteries (and cell balancing etc) I use this charger
Detailed Full PowerChair Related Menu
Lithium Battery Types, Voltage and compatibility chart here