Dumb Question Re: Charging Battery

[thrllskr]

I should know this by now but I don't. Can you charge your battery while it is still connected? My batteries are a pain to disconnect and both need to be charged. Sadly enough, with renovating my condo, I haven't ridden in over a month and I plan to ride on Monday like a tiger released from a cage. But from sitting for so long, the batteries have little juice left :-(


Now, an even dumber question and I am embarassd about posting this... do skis charge batteries while riding like a car does? If my batteries have enough juice for a few starts and I am riding all day, then I should be ok?

 

[Matt_E]

I wouldn't charge the battery while connected to the OEM electrical system. 9 out o ten times you'll be fine, but on number 10 you'll have a surge event on your mains and blow the regulator or CDI.

 

[Matt_E]

Yep. As mentioned, you'll be okay most of the time.

 

[Idok]

wouldnt your fuse blow if there was a surge?

 

[yamaslut]

let's argue. :Banane01:




I'm w/ saki on this... prove it Matty

how would the signal get to the CDI to blow it???
and the regulator does just that... it regulates the power from the stator, right??

 

[Idok]

seems as though the s/s circuit would have to be open too, right?


slutty told me once that if you dont hold the red button while dry cranking (ie no plugs in etc etc) that you could smoke the CDI that way..:shrug:


if you hook up the batt the wrong way, i know that'll kill the fuse......but..

 

[Kny21]

I know I always disconnect the batt. when I need to charge it..... Not sure if it matters but its just safer this way. Is really that hard to disconnect one 10mm nut. :dunno:

Maybe its becaues I'm coming from SeaDoo's with MPEMs that this will definitely fudge it you charge while connected. :sneaky:

And yes, it is always a good practice to hold the 'kill' button to ground out the ignition while cranking with the plugs out, unless you are grounding them to check spark.

 

[thrllskr]

It wasn't a real question - I just wanted to spark a good debate!

Actually, because I've lost atleast one battery nut on each battery, it is a PITA to remove the cables because I have to finagle (sp) this tiny nut into the terminal to try and get it to stay. It doesn't sound like a PITA, but it is.

mmmmm, I could go for a pita right about now.

 

[oxnard111]

I like PITAS but not P.I.T.A.'s. Yummm

 

[Mouthfulloflake]

damage is possible but for sure not the tenth time out of ten.

Ive done it ALOT... and never had a problem.. like several times per year for a few years now...

at least 30 or 40 times, and never had any problems.

Im not worried about a surge in the mains, just dont do it will your genset is buckling the transfer switch, or during a lightning storm, or any other grid voltage altering event.

:biggthumpup:

 

[vitaly]

1993 750SX and 1990 X2...
Yes and yes and yes and yes...

 

[SUPERJET-113]

Even the OEM SJ manual says to disconnect the cables before charging the battery.

I've never had a problem with a Yamaha, but doing it on a SD is a no no! Been ther dont that. It's not worth taking the chance, especially if your running a aftermarket ignition system.

Cranking with no plugs in the head and not grounded can fry the coil, never heard of it frying a CDI, but the world of electrical systems are touchy shiat!

 

[D Slicker]

I yank my battery because it the only way to get to the cables.

 

[kid4now]

10 - 15 years + chargining the battery connected to the ski with no problems on yami and kawi`s.

 

[hangtime]

I've also been charging batteries in all kinds of kawi's and now my SJ and Blaster .

I would think if there was a surge your fuse would blow :biggthumpup:

 

[kingnothing3]

matt is right. I have never charged my batteries while they were connected on my ski but i always have on my fourwheeler. and i have never had any problems until this summer. i hooked up the battery charger just like i have so many times in the past. and when it was done, i had no spark. it was my cdi $341:banghead: just take it out guys.

 

[tiplickhahaha]

i always charge the batterys in the ski connected..never even thought about it

no problems here :biggthumpup: :biggthumpup:


its a bitch when you lose that little block thing tho:17:

 

[Matt_E]

Even the OEM SJ manual says to disconnect the cables before charging the battery.

There's my proof.

I would think if there was a surge your fuse would blow

It may, or it may not. If it does, it won't be fast enough.
Fuses are for DC overload conditions, not for high voltage line surges (from the AC mains) or for fast transient burst events.

A fuse is ABSOLUTELY no good for that.

The stock electrical system is always ON. The fuse will not protect it. (from the rare events mentioned.

and the regulator does just that... it regulates the power from the stator, right??

Correct. It's also a semiconductor device that doesn't take well to the the conditions described above. It's first in line to blow.