Super Jet Why does my battery keep dying?

[Rotorhead65]

I just put a new battery in this thing 2 weeks ago, I went with the etx9 battery. Ive rode it 3 times since then and go to start it today and its dead. It fires right up when I put a jumper box on it. Does leaving the lanyard plugged in kill the battery?

 

[Boris]

Got a bilge pump switch going bad ???
Check the voltage at your battery with the motor running to see if your charging system is up to snuff plus check your grounds.

 

[Freakrider]

should show up to 14.3 volts when ski is running if your charging system is working, I doubt yours is...

 

[X2Pilot]

the battery is not getting charged

 

[Rotorhead65]

I fired it up off the jumper box and checked it, I have 11.99 volts at the battery when the ski is running. So what do I need to replace in the charging system?

 

[Matt_E]

Either the lighting coil or the regulator are bad.

 

[Rotorhead65]

Ahh ok, I was looking through the service manual and it shows a charge coil, pulser coil and a lighting coil. Whats the charging coil do compared to the lighting coil? How hard are these to replace?

 

[Rotorhead65]

How do I test the regulator? I wonder if thats my problem. 4 days ago it started and ran fine all day, now I go to start it 4 days later and it will hardly turn over. Does leaving the lanyard in draw power? This is a Deka etx9 thats 3 weeks old.

 

[Boris]

Leaving the lanyard in does not draw power. It ran fine 4 days ago because the battery had a full charge, without the charging system you were running it like a total loss that's why the battery died. I bet if you fully charge the battery, the ski will run at least until the power in the battery runs low.

 

[Rotorhead65]

Yea I understand that, what Im trying to understand myself is all day long last thursday it kept starting and running fine through the day. Now 4 days later it doesnt have the power to turn itself over. So, from thursday to today where did all the power go? It didnt "fade" out on me on thursday it was fine and starting no problem. Could this be the regulator?

 

[Matt_E]

The charging coil supplies the cdi with juice. The lighting coil charges the battery.

Ahh ok, I was looking through the service manual and it shows a charge coil, pulser coil and a lighting coil. Whats the charging coil do compared to the lighting coil? How hard are these to replace?

 

[Matt_E]

A bad regulator will indeed drain the battery luke that. Disconnect the battery and measure resistance between positive and negative cable and post what you find. Did you by chance hook up the battery backwards in the past?

Yea I understand that, what Im trying to understand myself is all day long last thursday it kept starting and running fine through the day. Now 4 days later it doesnt have the power to turn itself over. So, from thursday to today where did all the power go? It didnt "fade" out on me on thursday it was fine and starting no problem. Could this be the regulator?

 

[orangefinger]

your bilge switch is draining the battery..try disconnecting the negative on the battery and read the charge before you leave for the lake I bet its fine if the negative is disconnected

 

[X2Pilot]

The charging coil supplies the cdi with juice. The lighting coil charges the battery.

Isnt that backwards? I think its lighting coil supplies the cdi with power. The charging coil charges the battery?

 

[Matt_E]

The naming may sound backwards, but that's the way it works.
The name is a throwback to older days when the lighting coil would supply juice for accessories like lights and so on.
The charging coil is named such because it charges the CDI tanks for the ignition.

If the bilge switch were faulty, he would still see above 14.0V once it's running, and that's not happening.

 

[Rotorhead65]

Im gonna hunt down my multimeter today, slowly learning not to loan tools.... I actually hooked up the jumper box backwards today, i cought it before I tried to start it or anything. It did blow the fuse in the ebox.

 

[Freakrider]

the way to remember it is " the charge coil does not charge the battery". Matt is right...

 

[Rotorhead65]

Urge Resistance? Hmm not sure what that urge part means. I removed battery, red lead to positive cable & black lead to neg cable. I have no resistance-open circuit.

 

[Rotorhead65]

I opened the ebox and checked green to green off my stator and got 1.3 I also checked the voltage regulators red to ground and got an open circuit.

 

[Matt_E]

That's all normal. The next step would be to measure the voltage output of the lighting coil during cranking.