A New

You dont have to, but its interesting!

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A New

Postby martin007 » 04 Jun 2015, 00:24

Hello.

I am a young Spanish.
I have a neurodegenerative disease.
I move an electric wheelchair.

Sorry for my english.
My mother tongue is Spanish.

Some months ago I enter this forum.
Today I come to you for advice and help.
This is my power wheelchair.

wc_01.pg.JPG
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wc_02.pg.JPG
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wc_03.pg.JPG
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Re: A New

Postby martin007 » 04 Jun 2015, 00:41

I use premium batteries.

dryfit,jpg.JPG
dryfit,jpg.JPG (75.82 KiB) Viewed 3809 times


My battery charger is broken.
I need to buy a new battery charger.
A charger for to 30 ah batteries (sonneschein A512/30,0 G6).
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Re: A New

Postby Burgerman » 04 Jun 2015, 00:55

Any 5A mobility charger from eBay will fix that problem.

Such as http://www.ebay.es/itm/3-STAGE-MOBILITY ... 2a3713bf55
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Re: A New

Postby martin007 » 06 Jun 2015, 18:30

Hello Burgerman
Thanks for answering.

I would buy this charger

Image


http://www.cheapest-scooters.co.uk/Mobi ... arger.html

MK Powered Charger
24v
5A

Mk Powered is a recognized brand.
Mk Powered make a good batteries.


Sorry for my english :oops: :oops: :oops: :oops: :oops:
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Re: A New

Postby Burgerman » 06 Jun 2015, 19:21

MK BATTERIES = GOOD!

That charger is not perfect. It will work. But charges at:
Charging Voltage (DC) 28.8V

Ideal charge voltage to make MK last longer is 14.1V or with 2 batteries, 28.2V max.


TECH INFO Direct from MK -- ALL say 13.8 to 14.1V per battery:

http://www.wheelchairdriver.com/MK1.pdf GEL charge info technical
http://www.wheelchairdriver.com/MK2.pdf GEL+AGM
http://www.wheelchairdriver.com/MK3.pdf Tech data GEL
http://www.wheelchairdriver.com/MK4.pdf Tech mobility info
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Re: A New

Postby martin007 » 06 Jun 2015, 22:52

which charger you recommend?
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Re: A New

Postby Burgerman » 06 Jun 2015, 23:34

Well for gel, its a problem.
Almost all marine chargers charge correctly. I don't use MK batteries so never really wen=t looking for one. I have 1 set, and use my hobby chargers for those as they allow me to choose a setting.

Another user has just ordered a Samlex charger as it does 14.0V or 14.4V and you can choose. http://www.samlexamerica.com/products/P ... px?pid=174

But small 14 or 14.4v chargers are hard to find.
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Re: A New

Postby martin007 » 06 Jun 2015, 23:58

Hello.


TECH INFO Direct from MK -- ALL say 13.8 to 14.1V per battery:



OK.

But:

Sonnenschein A500 batteries also recommend that voltage (13.8 to 14.1V per battery)?

http://www.sonnenschein.org/Charging.htm

Sonnenschein/Dryfit (German) and Deka Gel-Tech (US)

Charging.Sonnenschein/Dryfit (German) A200 product is correctly charged (@ 2.4v/cell)14.4v/ and float voltage is (2.3v/cell)13.8v) @ 20°C to 30°C. US (Deka Gel-tech) is correctly charged at (2.35v/cell)14.1v with (2.3v/cell) 13.8v float @ (68°F) 20°C.
For lower and higher temperatures, from (minus) -22ºF up to (plus) +120ºF, charge voltages should be adjusted according to the graph supplied with each battery. (A 500.)

http://www.sonnenschein.org/PDF%20files ... rature.pdf


:?: :?: :?: :?: :?:
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Re: A New

Postby Burgerman » 07 Jun 2015, 01:01

(Deka Gel-tech) is correctly charged at (2.35v/cell)14.1v with (2.3v/cell) 13.8v float @ (68°F) 20°C.

A500 is gel... Gel deep cycle, 14.1V (2.35 x 6 cells = 14.1V)

.Sonnenschein/Dryfit (German) A200 product is correctly charged (@ 2.4v/cell)14.4v/ and float voltage is (2.3v/cell)13.8v) @ 20°C

A200 is different and not a true gel or true deep cycle battery and so less cycles. And cheaper. And 14.4V

Sonnenschien own chargers on the link you posted have a SWITCHABLE output to suit 14.4 or 14.1 for gel. Take a careful look:

Battery Type selector switch for proper charge format for specific battery technologies


You can, and many do, charge gel at 14.4v.
But you DO lose some cycle life. Its not ideal. And this includes almost all mobility chargers.

Sonnenschien and MK use the same technology in their true gel deep cycle traction batteries. In fact Sonnenschien licenced it to MK...
And both these companies say you can charge at 14.4v. Because they would lose battery sales if they restrict it to 14.1V only. But if you look a lot deeper, it is at the expense of cycle life. In fact in marine use all of this is well known, and marine chargers generally have a proper 14.1V gel charge setting as do most industrial or large solar chargers.

Gel BEST charge voltage for cycle life 13.8 to 14.1V
AGM generic 14.4 to 14.6V
Pure lead like Odyssey, Optima, and some Exide spiral cell batteries, sears die hard rebadged ones are 14.4 to 14.7 where 14.7 is best. And to a very low A cut-off point.
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Re: A New

Postby martin007 » 07 Jun 2015, 19:56

Hello.

Thanks for answering.
Thanks for your time.

And both these companies say you can charge at 14.4v. Because they would lose battery sales if they restrict it to 14.1V only. But if you look a lot deeper, it is at the expense of cycle life. In fact in marine use all of this is well known, and marine chargers generally have a proper 14.1V gel charge setting as do most industrial or large solar chargers.


OK.

I searched more chargers.
I found this:


[url]http://www.ricardovela.com/es/cargador-baterias-plomo/4525-cargador-baterías-gel-12v-2a-8-40ah.html[/url]

Haze Battery Charger
Charger 24v 4A

For batteries AGM and Gel type, with three charging cycles:

1. Start with slow load to avoid overloading the vessels of the batteries start.
2. Absorption increases the load current pulses rather than a continuous stream to avoid overheating the battery, thereby increasing the useful life of the battery.
3. Flotation, comes the end of the charge and maintains a small holding current to avoid self-discharge of the battery.

Load output voltage GEL: 28.2 V
Floating voltage mode: 26.8 V GEL

Overvoltage protection.
Reverse polarity protection.
Protection against internal overheating.


Microprocessor controlled.
Mode high frequency switching.
Constant voltage charging for the absorption phase.
The chargers incorporate the Soft Start Technology.


What do you think?
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Re: A New

Postby Burgerman » 07 Jun 2015, 20:44

Sounds great except too slow. 2A isn't enough. You really need more unless you have a lot of time.

30Ah battery, if fully discharged will take 15 hours to charge to CC stage, another 2 to 4 hours at CV stage.
You may not discharge to 100 percent but its still too slow.
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Re: A New

Postby martin007 » 07 Jun 2015, 22:38

But?

http://www.hdibattery.com/p11801674_car ... XDf3O-kWDg

http://www.ricardovela.com/es/cargador- ... ador-baterías-gel-12v-2a-8-40ah.html


Haze Battery Charger
Charger 24v 4A

no 2A

I don't understand
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Re: A New

Postby martin007 » 08 Jun 2015, 00:03

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Re: A New

Postby Burgerman » 08 Jun 2015, 00:25

Yes its OK and I miss read the data. 4A? Good for overnight charge.
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Re: A New

Postby martin007 » 08 Jun 2015, 00:37

ufffffff :P :P :P :P :P :P :P :P :P :P

Thank God!


as I connect alligator clips to neutrik?


cocdrile.JPG
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to


neutrik.JPG
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If the ambient temperature is low (in winter).
5º to 10º

How to adjust the charger current (v)?

the charger has a room temperature sensor (thermometer)? :?: :?: :?: :?: :?: :?: :?: :?:
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Re: A New

Postby Burgerman » 08 Jun 2015, 11:14

Correct charge voltage depends on temperature. Colder needs more, warmer needs less volts. The charger corrects for this.

Yes solder on a new connector!

>> How to adjust the charger current (v)?c

No idea. Choose 4A and Gel. Press go?
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Re: A New

Postby martin007 » 09 Jun 2015, 23:13

OK.

I will buy it.

In a few days I upload photos.


Thanks.


Bye bye.
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Re: A New

Postby martin007 » 08 Jul 2015, 00:35

Hello.

I already bought the battery charger.
I have a question.

the instruction manual indicates:

2. Connecting the Battery charger to you Battery
(a) If the Battery is out of the vehicle
1. Connect the Red lead from the charger to the positive (+) battery terminal.
2. Connect the Black lead from the charger to the negative (-) battery terminal.
(b) If the Battery is still in the vehicle
1. Determine if the vehicle is positively (+) or negatively (-) earthed.
(i) If Negatively Earthed (Most Common) – FIRSTLY Connect the Red (+) battery
charger lead to the positive (+) Battery post and then connect the Black (-) battery
charger lead to the vehicle’s chassis and away from the fuel line.
(ii) If Positively Earthed – FIRSTLY Connect the Black (-) battery charger lead to the
negative (-) battery post and then connect the Red (+) battery charger lead to the
vehicle’s chassis and away from the fuel line.


What do you think?
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Re: A New

Postby LROBBINS » 08 Jul 2015, 00:46

Wheelchairs DO NOT have the chassis connected to the battery at all - they're talking about cars and it's irrelevant for a WC.
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Re: A New

Postby martin007 » 08 Jul 2015, 00:55

WC?


I don't understand.
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Re: A New

Postby Burgerman » 08 Jul 2015, 01:30

WheelChair = WC
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Re: A New

Postby LROBBINS » 15 Jul 2015, 22:15

WC = shorthand for WheelChair. In a wheelchair, for safety, wires, and NOT the chassis, are used for both the battery + and the battery -. If the chassis is connected to B-, a short from a B+ wire to the chassis can cause a fire and depending on which wire it is might not open the fuse or circuit breaker. Because wheelchair uses can't get up and run away in case of a fire, we avoid using the chassis to carry power. Ciao, Lenny
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Re: A New

Postby martin007 » 23 Jul 2015, 12:09

Hello.

Here are the photograph of the charger.


charger-01.JPG
charger-01.JPG (94.9 KiB) Viewed 1874 times


charger-02.JPG
charger-02.JPG (134.07 KiB) Viewed 1874 times



I hope it works well.

24 v 4 ah

Load output voltage GEL: 28.2 V
Floating voltage mode GEL: 26.8V
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Re: A New

Postby Burgerman » 23 Jul 2015, 13:30

It will work fine. But will be slower.
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