300/440/550 Charging battery in ski

[velocity]

Someone told me that charging my battery in my ski with it still hooked up would fry the electronics. It is an 85 JS440 is there any truth to that? We had the girls out on it this weekend and they drained the battery from falling and starting over and over so we jumped it with the car. Everything still works I just want to know if in the future we should remove the battery from the ski first or if it is fine to jump it in the ski. How about on the trickle charger, fine being in the ski or do I need to disconnect it?

 

[Mouthfulloflake]

Its never fried anything in my boats.
I dont think there is much in there that can be hurt as long as the battery is connected.

( hooking a charger directly to the black and red wires MIGHT hurt something without the battery there to 'buffer' the voltage)

 

[tor*p*do]

two things: it is OK to charge the battery connected and in the ski.
AS LONG AS YOU LIMIT the charge rate to 2 amps
you can jump a ski off a car, just dont have the car running
a car alternator puts out way more than 2 amps and can fry your electrics.:lightning:

 

[Mouthfulloflake]

Ive done BOTH of the things you are saying NOT to do, with no damage.

multiple times even.

two things: it is OK to charge the battery connected and in the ski.
AS LONG AS YOU LIMIT the charge rate to 2 amps
you can jump a ski off a car, just dont have the car running
a car alternator puts out way more than 2 amps and can fry your electrics.:lightning:

 

[tor*p*do]

Ive done BOTH of the things you are saying NOT to do, with no damage. multiple times even.

lucky man. . .. maybe not so lucky next time . . . . .

 

[WFO Speedracer]

I will tell you why they say not to charge the battery in the ski,a lot of people like to plug in their charger and then hook it up.That creates sparks,sparks inside the hull are not good,therefore the mfg's have decided that you should not charge the battery while it is still connected.Thats about the long and short of it,its more to alleviate liability than anything else.

 

[Mouthfulloflake]

yep.

there is FAR more 'amps' between a good battery and a dead battery when connected than from a 2 amp charger.

Its not really a simple matter more 'amps'

 

[WFO Speedracer]

There are no amps in a dead battery and unless you have something like a new Seadoo or Yamaha with the multi gauge setup there should be no draw or sparks going on when you hook up or unhook your battery.

 

[ezmoney]

lucky man. . .. maybe not so lucky next time . . . . .

I've jumped my 550 off of running Jeep's, Suburban's, hell even a mastercraft once. No problems to speak of.

 

[freestyle000]

it's ok to charge a battery while in the ski but jump starting should not be done. it can fry the exciter part of the stator and the regulator. I have done it before and it worked fine but have also burned out the stator too. I don't chance it anymore

 

[Matt_E]

A main reason to disconnect the battery while it's being charged is this: line transients, voltage surges, spikes, sags, swells, etc on the 120V mains lines.
They have the potential to go through the charger into the battery and into your electronics if they are still connected.
That's bad.
Probably won't ever happen, but if it does you'd be happy you disconnected the battery.

 

[ChristopherK823]

charging batteries

I use a battery tender with cables still hooked up. I hook the clamps on the battery first before plugging in to minimize the risk of sparks. Remember a battery can have hydrogen gas in and around it.(remember the Hindenburg):scared: I would NOT use a regular car battery charger without diconnecting the cables first. It has WAY TOO MUCH current at even the low setting. If you do, CAVEAT EMPTOR:fingersx: . I am an ASE certified master technician for cars, so jet ski's aren't much different.

Chris:arms:

 

[Matt_E]

A spark can come from milliamps, so the charger doesn't matter if you're worried about H2 generation.

 

[GReenANt]

just remove it i mean is it worth the risks when you know taking it out is the safest thing.

how long can it take to remove it dont be lazy you may end up regreting it

 

[keefer]

I would be a lot more worried about heavy sinking gasoline vapors in the bilge rather than some small amount of light rising hydrogen gas that may occur. Don't take chances, remove the battery before charging unless you like living dangerous.