Battery

[mark5]

So you're going to open the battery wrapper and replace the BMS.

What battery you got 48V or 72V?

Do you know how to check cell voltages (dogman article example) and do you have a multimeter?

 

[tazzman600]

I will get someone to replace BMS

 

[tazzman600]

48 v

 

[dnmun]

there is no evidence the BMS is bad or that the guy who told you it was bad knew what he was talking about.

do you have a voltmeter and can you take pictures of your battery and BMS so we know what you have?

you should put the battery on the charger and leave it there until you get the voltmeter and can post up pictures.

do not give your battery to another person who does not know what they are doing.

it is better for you to learn how to take care of maintenance yourself and not depend on others.

 

[tazzman600]

I don't understand anything you wrote

I don't have a volt meter

 

[KMB]

your battery should read 54.6 fully charged

 

[mark5]

You must have something besides a voltmeter then to know your battery is at 53V.

If you listen to dnmun and read dogman's article you might be able to avoid replacing the BMS and get up and running sooner.

Presumably Rafe assembled the pack and someone wrote here that he's an engineer but what kind of engineer I don't know. <== Correction: http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=59204&start=25#p893028

 

[dnmun]

i cannot imagine what i wrote that is not intelligible.

cannot make it simpler.

 

[mark5]

At least continue to charge the pack like dnmun told you.

If you're just interested in riding your ebike, not the maintenance part, it's understandable. But I don't see battery maintenance as being a far stretch from converting to an ebike in the first place. If you and not someone else did that.

 

[tazzman600]

When I fully charge the battery the speedometer says 53 volt

Once I start the voltage starts to go down quickly than restarts

 

[mark5]

When you say "fully charge" does that mean you took it off the charger soon after the light turned green. Charge it longer.

Buy a $6 multimeter at Harbor Freight. Should be one in your city.

 

[tazzman600]

Ok I will but the volt meter

But know I left the charger on for an hour after the light turned green

 

[mateusleo]

What is the battery chemistry? How many in series? Lifepo4 16s should read 56.7~ volts hot off the charger

 

[tazzman600]

All I know is that the battery is Cali Battery

I will open the battery tomorrow and I will purchase a volt meter

 

[dnmun]

no. do not open the battery. you are not prepared to do that and have no experience. we tried to help you.

 

[999zip999]

It's said 18650 cells same as Tesla and then says same as laptop cells. So he really says nothing.
Tazzman what is your motor and controller (amps ) setup ?

 

[mark5]

I will open the battery tomorrow and I will purchase a volt meter

Do buy the multimeter but don't open the battery up yet. Let Calibike send you the replacement BMS.

But do keep on charging the pack. Just leave it that way. Won't hurt it.

What is the battery chemistry? How many in series? Lifepo4 16s should read 56.7~ volts hot off the charger

trav posted that he has one, looked in it, and it's NMC, 13s7p, 91 cells http://endless-sphere.com/forums/viewtopic.php?f=14&t=61736#p922049, http://endless-sphere.com/forums/viewtopic.php?f=14&t=61736#p922163.

 

[aroundqube]

If charging for a couple of days does not help. And if you are not comfortable with fixing it, try http://www.phillyew.com

 

[mark5]

Tazzman what is your motor and controller (amps ) setup ?

Looks like he has two motor kits. An ElectricRider Crystalyte with 40A controller and an E-Bikekit. He said his speedometer showed 53 volts (E-BikeKits have displays?).

So which motor you using your Calibike battery on, tazzman? The ElectricRider or E-BikeKit?

 

[tazzman600]

I am using it on the Crystalyte motor

 

[tazzman600]

Here is how everything unfolded.

The battery died while I was riding the bike.

After I fully charged the battery I went to Un plug the charger the plug came lose.

It was tough to take it apart.

I was able to squeeze the plug back onto the wire.

The next time I rode the bike I started to have the problem

 

[dogman dan]

Sounds to me like you are not getting fully charged through a flaky plug.

I also would expect that a 40 amps controller on that battery is stressing it very hard. Though it may say it can handle it on the spec sheet, it is definitely a lot of controller.

 

[tazzman600]

I am getting a full charge

The plug did not separate until after I charged the batteries

 

[mark5]

But 53 volts is not fully charged. KMB said earlier it's 54.6. And evolutiongts' CaliBike battery label picture says same.

Keep charging it to see if you can get the voltage up.

Buy the multimeter. It can help you find out if your charger plug connection is flaky.

That battery's rated discharge is 30A. Like dogman said your 40A controller might be hard on it.

 

[tazzman600]

Ok Thanks

I will buy the volt meter to check the charge