Need a 72v battery pack + charger

[andla]

Just bought a 72v kit without battery or charger. So I'm a bit crippled. I try to understand and read in the forum but I'm noob and all you people know so much while I feel stupid.
I have been looking for a123 batteries and I don't know if a123systems can make a custom made and how long it will take.
Do you have any experience buying from them?
Do you know of any credible shopping site that have these 72 volt battery pack for e-bikes / electric scooter?
If I want to add a charger to it I found somebody writing about more than 20 amps.
Where do you recommend me buying a charger.

Appreciate your help on this.

Sincerely
Andla

 

[spinningmagnets]

Is this for a bike or scooter? the weight will affect how many amps you need to provide. Which controller are you using? The battery size can affect its current output capability (C-rate).

I've seen many people get two of the 36V battery packs and connect them in series to get 72V.

What is your budget for the battery pack + charger?...

 

[andla]

Is this for a bike or scooter? the weight will affect how many amps you need to provide. Which controller are you using? The battery size can affect its current output capability (C-rate).

I've seen many people get two of the 36V battery packs and connect them in series to get 72V.

What is your budget for the battery pack + charger?...

Thanks for your response spinningmagnets.
I will first apply it to an e-bike and I want to have a long range between charges. Then I'm thinking of using it in a electric scooter.
I have ordered a kit for 72 volts.
This is what I will receive:
------------------
HS FRONT MOTOR IN 28" RIM
CONTROLLER 72V40A FRONT DIGITAL SENSORL
FULL TWISTGRIP REGULATOR NO INDICATION
PAS V7
BATTERY CABEL
------------------

Budget I think not more than 800 Euro unless something is exceptional good

/Andla

 

[andla]

Can anyone recommend a company that do custom made batteries. I don't want to mess things up breaking apart dewalt batteries.

 

[Ypedal]

give us a link to exactly what your purchased .. it helps figure out what to recommend.

 

[andla]

It was a custom order and I have posted the specs of the stuff I ordered.
I have been talking with falconev.com and I think they can fix something for me.
It looks like a good company.

 

[Kin]

What ypedal says is very true (they need to figure out what would be appropriate for the specific kit. I say they, because I am noob ).

But to answer your immediate questions-

There are people who make custom LiPO4 options, and you'll probably be directed to Cell_Man, on this forum, who makes them with a123 cells.

The first alarm bell for your kit, I imagine, is the the fact that you were given a 40 amp controller for a 72 volt system...and that's just a very high current for the high voltage system. I am not entirely sure what the implications are, though. So if you give more details people will probably be willing to sort potential problems.

 

[Ypedal]

I would highly recommend against falconev , the guy is a horrible person.... my personal experience there has been very bad.

 

[andla]

I would highly recommend against falconev , the guy is a horrible person.... my personal experience there has been very bad.

What happend?
Can anyone confirm?
There is a couple of youtube clips using falconev and none of them had anything bad to say?
Searching in the forum I couldn't find much they where bad?

He says through e-mail that I need at least 20 amps. I think he means per pack. 2 packs of 36 volt.
The cost will probably be about 1700 dollar or more.

What ypedal says is very true (they need to figure out what would be appropriate for the specific kit. I say they, because I am noob ).

But to answer your immediate questions-

There are people who make custom LiPO4 options, and you'll probably be directed to Cell_Man, on this forum, who makes them with a123 cells.

The first alarm bell for your kit, I imagine, is the the fact that you were given a 40 amp controller for a 72 volt system...and that's just a very high current for the high voltage system. I am not entirely sure what the implications are, though. So if you give more details people will probably be willing to sort potential problems.

If you need more information I can call crystalyte europe and ask them. This is where I bought the kit. I said I wanted the fastest they had. I want to go really fast. LOL.
So 40 Amps sounds good then?
What should I ask about? I suppose this would be very technical questions then?

 

[aaronski]

There was a source in for sale threads with Bosch packs. They are easy to wire up for 72v, just put two in series, and as many in parallel as you can afford. I have 6 packs total, for2s3p, works great and is very forgiving of noobs. Yea, at 72v, 40 amps, I see you spinning that front tire and crashing... Be careful, and get a wide sticky tire like a maxxis hookworm for traction. Front tires doing power leaves little traction for cornering.

 

[andla]

I got some more information from him.

Balance circuit boards
2 chargers
15Ah with these A123 cells

 

[andla]

There was a source in for sale threads with Bosch packs. They are easy to wire up for 72v, just put two in series, and as many in parallel as you can afford. I have 6 packs total, for2s3p, works great and is very forgiving of noobs. Yea, at 72v, 40 amps, I see you spinning that front tire and crashing... Be careful, and get a wide sticky tire like a maxxis hookworm for traction. Front tires doing power leaves little traction for cornering.

Loool
Yeah I expect about 60-70 km/h

I guess I could open up and put things together with solder but I would easily fish things up. I need something working and reverse engineer it in order to understand it I think. Again I'm a noob.

I'm down to 1600 dollar now?
What about the price Does it sound allright?

 

[Ypedal]

this goes back to 2008, but see here : ( Green Hornet is falcon EV )
http://endless-sphere.com/forums/viewtopic.php?f=14&t=3710&p=54751#p54751

He likes to register on forums and pretend to be a customer of himself to try and promote his website..

Tried to have me fired from my day job by contacting my employer and complain that i slander him online.. ( after simply telling the truth about my experience with him ) ..

yeah.. a real winner...

 

[andla]

this goes back to 2008, but see here : ( Green Hornet is falcon EV )
http://endless-sphere.com/forums/viewtopic.php?f=14&t=3710&p=54751#p54751

He likes to register on forums and pretend to be a customer of himself to try and promote his website..

Tried to have me fired from my day job by contacting my employer and complain that i slander him online.. ( after simply telling the truth about my experience with him ) ..

yeah.. a real winner...

Yes I see what you mean. Tends to scare customers away. But on the other side from time to time a flame war arises and people say bad stuff to quick.
What do you think of the product and prices.
Do you think it is fake or prices to high?
Can you recommend anyone else?
I'm almost about to order now but need to bee certain.

 

[Spacey]

If you are looking for a123 cells, I know Cellman on these forums is doing them at a pretty good price and he is reliable.

 

[999zip999]

First things first o.k. What motor ? 404, 5303, 5304 ? ect. what controller ?? Where did you buy it from ? THese are the first ? that need to be answered o.k.. Help Ypeddle and yourself need to know to help you. But a cycle analyst to adjust or turn down your controller and see how much range will have at 72v. and 40amps is 3000 watts with bursts of 3200 watts or more, you will need a very good battery A123 sounds like a must. How far do you plan to travel Good luck.

 

[andla]

First things first o.k. What motor ? 404, 5303, 5304 ? ect. what controller ?? Where did you buy it from ? THese are the first ? that need to be answered o.k.. Help Ypeddle and yourself need to know to help you. But a cycle analyst to adjust or turn down your controller and see how much range will have at 72v. and 40amps is 3000 watts with bursts of 3200 watts or more, you will need a very good battery A123 sounds like a must. How far do you plan to travel Good luck.

Hi 999zip999,
Ok this is the controller:
http://shop.crystalyte-europe.com/product.php?productid=16465&js=n

And the
HS FRONT MOTOR IN 28" RIM as this article id 'M-HS-F-28'
I found this link:
http://www.crystalyte-europe.com/product.php?productid=16452

I don't know about the motor type. I will ask tomorrow.

 

[999zip999]

I had a 36-72-40amp. ditatal crst. con. it worked good. But with the 3 phase wires so long 6ft. they would get hot and melt the outer casings so when I shorten the wires to fit no problem. You don't have to shorten the 5 small sense wires they are low current. Just buy 3 new anderson pins for those wires they pull out with a paper clip you know. or something. Thanks should have a moster ride. But I would buy the batties at 2-36v maybe 15ah. for more felxable. 36v is alot for over the pond. Also a C.A. should plug right in if you have the 6 pin (?) this let you have controll over that 40amp. controller maybe down to 25amps and 72v's. Good luck.

 

[andla]

I had a 36-72-40amp. ditatal crst. con. it worked good. But with the 3 phase wires so long 6ft. they would get hot and melt the outer casings so when I shorten the wires to fit no problem. You don't have to shorten the 5 small sense wires they are low current. Just buy 3 new anderson pins for those wires they pull out with a paper clip you know. or something. Thanks should have a moster ride. But I would buy the batties at 2-36v maybe 15ah. for more felxable. 36v is alot for over the pond. Also a C.A. should plug right in if you have the 6 pin (?) this let you have controll over that 40amp. controller maybe down to 25amps and 72v's. Good luck.

There is much things I don't understand that you wrote about.
ditala crst. con
3 phase wires
5 small sense wires
anderson pins
6 pin

This is my first time with hub motor and I have not received it yet.
In general I will not run fast but only if some cyclist racer try to show of then maybe I will show him/her.
In the specs it says maximum 40 km/h but when I talked with the guy selling the kit he said that I will go maybe 60-70.

One thing I must ask you all.
How do you deal with speed wobble?
As we can easily go fast I guess some of you have some experience with that.
I'm curious to know.

 

[aaronski]

Speed wobble must be based on bike geometry ifIt happens on a bike at all . I've had it bad on skateboard but never on a bike.

 

[999zip999]

Andla, Sorry I,m was throwing things out that have happen to me. I,m not the expert but I have to correct these problems.Looking at your controller and the wires coming out will only connect to the other plugs in most all the time. The power wires from battery to controller are the large black & red ones with andersons type connectors on the ends. The 3 large phase wires with 5 sense wires go to the motor. The 3 phase wires run the current to the motor the to work they should as short as can be ( little extra ) but not 6 ft. long. The wires running 40 amps. may melt.O.K.. The 5 sense wires tell when to supply the volts thru the 3 phase wires low voltage no problem. On the 3 phase wires have anderson connectors on the ends you can shorten these by cutting them to lenght and crimping and soldering new pins- yes both. then with a paper clip or a flat very small scewdriver pull out the pins from the old 3 andersons ( I think 35amp. andersons ) and reuse the plastic part of the connetors. The cycle analyst has a 6 pin connector and your controller should have a 6 pin connector. ( yes ?) This is almost a must have very important thing. Should read up on the C.A.. So as to controll your controller so as to save your battery. Your battery will run like a horse till I till it dies and you will have to shoot it. The A123 are your best bet. The battery is the weak link on e-bikes. The outter connertors coming out of your controller throlle 4 pin, brakes, ect. Go buy the anderson pins next time you can find them. These bikes are not just plug and play get a vom meter and a soldering iron. Don't just try and maybe crimp the wire connections and think it's as good. You can start with just one 36v A123 and add one later for you bike slash 72v. motorcycle project. Did I read this front wheel drive ?. Good luck

 

[andla]

Speed wobble must be based on bike geometry ifIt happens on a bike at all . I've had it bad on skateboard but never on a bike.

I had some speed wobbles when I was much younger. Going downhill faster than I could move the pedals. Then it wobbles and that always ended up me crashing.

Andla, Sorry I,m was throwing things out that have happen to me. I,m not the expert but I have to correct these problems.

Thanks 999zip999. I think I need to get into what you write about when I have the stuff. Right now I have no clue.


I will have to wait 3 weeks for the batteries. A long time. Sigh!
Does anyone know if there is a speed limiter built in? I really hope not

 

[999zip999]

So you order a 72v 15ah a123 ? From who ? Is these a front or rear motor ?

 

[andla]

So you order a 72v 15ah a123 ? From who ? Is these a front or rear motor ?

The battery packs from falconev and the rest from crystalyte-europe.com.
It is a front wheel 28''
controller 72v40a
I have not much info on the wheel. Sorry.

BTW How long have your hub motor lasted for you. Reason for asking is I want to know how much stress I can put on. I'm a quite heavy person over 100 kg so i guess I have to take it easy.

 

[999zip999]

Sorry about all the wire talk but there are a set number of wire groups coming out of your controller. You find a group of 2 heavy wires for the battery. the other heavy set is for the motor 3 wires with anderson plugs on the end. The 5 phase wires are with these wires , but can be left long because they are low voltage and to hard to shorten for your purpose they don't get hot . The three andersons connection for the motor that connect the battery to the motor can be a problem if running high amps. If these wire is to long it will heat of if there is to many amps. not volts you have a 40amp. controller. On some crstalyte controllers have a 6ft. long wires which can give you problems over a short time. that's it. If they are to long you just have to shorten the heavy wires. The 3 connectors on the end of these wire group have these connecters (andersons maybe the 35amp. models) you only need new pins inside of these connectors. Frist is your wires to the motor to long for your bike ? With high volts and high amps these wires my get hot. The 6 pin is a black connector with 6 silver pins inside these will connect to a cycle analyst which will give you controll over your bike and let you know how long you have to ride before your barrtery dies that is not a good thing to run a battery down to zero. Plus it will let you controll the amount the 40amp. controller takes out of your battery at one time. Just because they make a 40amp.72v controller dosn't mine it is best for you battery or wires O.K.That is all.