Battery Charging? New to that!

[Jay Fridays]

No LBS, he was saying that the BT jr. blinks when your battery reaches 80% charge, and that had not happened yet.

STRAT !!!

7.35 is not 80% of 12 (why the BT jr. was not blinking yet)

7.35 is not enough to start your bike !!!!

Stick it on the BT jr. until Sunday, or jump the thing already....

 

[StratTuner]

STOP !!!!!!!! There's your answer !!!!

BATTERY IS DEAD !!!!

It should be around 12v!!!!

JUMP THE FRIKKIN BATTERY !!! ...lol

Correct. Even I get that the Sperry should read 12 because it's a 12 Volt battery.
it reads 7.35.
What does that mean?
0 would mean DEAD.

Should I keep charging or go get another one... a la Mr. Cash's advice?
I regret not being willing to jump it. I know that's your first choice.

Now the question is... Is the battery servicable or do I need another one?
I presume it's charging...
but the only way to know that for sure is to take a reading in an hour and see if the 7.35 goes up.

I calculate that it's charging at a rate of .7 an hour, so in one more hour it should be at (7.35 + .7)
which is 8.05. I'll take another reading in an hour.

NB: I pulled and checked EVERY FUSE (thank you L.B.S.). they all look fine.

 

[L.B.S.]

the Sperry DM-350A (set up the say Jay Fridays advised) gives a reading of

7.35

that's with the battery tender UNPLUGGED from ANY power supply.

Now it's on to L.B.S. and his instructions on how to remove the fuse box.

7.35

Is that even possible, lol? Good heavens. I've never seen that low before, and from a GPS over night? huh.

If the battery really is that voltage, then it may jump start, sure, but it will take a loooong ride to get it back to the point where you can stop, shut off the bike, and have any hope of restarting without another jump...

Thta's really hard on a battery to drain it down so uber dead.

 

[Jay Fridays]

Correct. Even I get that the Sperry should read 12 because it's a 12 Volt battery.
it reads 7.35.
What does that mean?
0 would mean DEAD.

Should I keep charging or go get another one... a la Mr. Cash's advice?
I regret not being willing to jump it. I know that's your first choice.

Now the question is... Is the battery serviceable or do I need another one?

I mean DEAD as in not alive enough to run your bike.

0v or 5v, it's dead....lol

Yes, just charge it and you'll be fine. Jumping, You will not destroy any electronics, and this guy has no knowledge to back that answer. That's what your fuses are for in the first place, to prevent power surge from reaching components. However, if your car is already started before connecting the cables, you have no surges to worry about.

If you are still scared, put the BT jr. on for another day or two. I never had the patience or time to let my bike sit for 3 days, the reason I always jump it. WHen I had the Battery Tender Plus, it would get enough charge to start over night.

If you ride for about an hour, you will be fine to turn it off....

I've been lower than 7.35v. I had a bad rectifier (bike's version of an alternator) on my old bike and went through all this mess before.... trust me!!!

Relax, Jump the damn battery, and be on your way.....lol

 

[L.B.S.]

Correct. Even I get that the Sperry should read 12 because it's a 12 Volt battery.
it reads 7.35.
What does that mean?
0 would mean DEAD.

Should I keep charging or go get another one... a la Mr. Cash's advice?
I regret not being willing to jump it. I know that's your first choice.

Now the question is... Is the battery servicable or do I need another one?

Actually, I hate to tell you this, but a 12V battery should always read well over 12V

It can be considered dead @ anything under 12

Open Circuit Voltage of 12V battery after vehicle is off for one hour.
12.6 V 100%
12.4 V 75%
12.2 V 50%
12.1 V 25%
Less than 12 volts = Dead

 

[L.B.S.]

I mean DEAD as in not alive enough to run your bike.

0v or 5v, it's dead....lol

Yes, just charge it and you'll be fine. Jumping, You will not destroy any electronics, and this guy has no knowledge to back that answer. That's what your fuses are for in the first place, to prevent power surge from reaching components. However, if your car is already started before connecting the cables, you have no surges to worry about.

If you are still scared, put the BT jr. on for another day or two. I never had the patience or time to let my bike sit for 3 days, the reason I always jump it. WHen I had the Battery Tender Plus, it would get enough charge to start over night.

Great Scott, Mother Theresa wouldn't have the patience to try and charge a 7 volt battery back to life with a B.T. Jr., lol. I'm totally with you on this one...

 

[L.B.S.]

No LBS, he was saying that the BT jr. blinks when your battery reaches 80% charge, and that had not happened yet.

Ahhh! See, I totally missed that, lol.

 

[Old Can Ride]

Do not jump your motorcycle off a car battery .............................................................................................................................................................................................

Amps not volts is the problem here !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Both are 12 volt, but the auto is around 500 amps and the motorcycle around 20 amps.

Had a customer I really felt sorry for. He was an honest customer. He drove a new venture royal home and parked it in his garage. Left the key on. Next morning he jumped it off his dulley, 1500 amps. Fried everything all the way back to the tail light bulbs. NOT COVERED BY WARRANTY.

Ok to jump off another 20 amp system (motorcycle, atv, etc), but never an auto.

Also, had a customer who had a rhino, that purchased a 125 amp lawn mower battery at walmart. Fried the 20 amp system when he put it in the Rhino.

OK to carry jumper cables to jump off another bike, but not a car!!!

An yes I have heard the stories from people who jumped off a car, and stated it worked great. Not long before they were replacing starter motors, etc.

 

[L.B.S.]

Do not jump your motorcycle off a car battery .............................................................................................................................................................................................

Amps not volts is the problem here !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Both are 12 volt, but the auto is around 500 amps and the motorcycle around 20 amps.

Had a customer I really felt sorry for. He was an honest customer. He drove a new venture royal home and parked it in his garage. Left the key on. Next morning he jumped it off his dulley, 1500 amps. Fried everything all the way back to the tail light bulbs. NOT COVERED BY WARRANTY.

Ok to jump off another 20 amp system (motorcycle, atv, etc), but never an auto.

Also, has a customer who had a rhino, that purchased a 125 amp lawn mower battery at walmart. Fried the 20 amp system when he put it in the Rhino.

OK to carry jumper cables to jump off another bike, but not a car!!!

An yes I have heard the stories from people who jumped off a car, and stated it worked great. Not long before they were replacing starter motors, etc.

I would humbly add that in my experiance, it's the car *running* that is the big no-no.

If just the car battery is being used for a source of 12V power, then the bike does not know or care where that 12V is coming from.

 

[StratTuner]

I'm sorry if the is seems over-done, over analysed...

I don't know another way to approach problems.

 

[L.B.S.]

I'm sorry if the is seems over-done, over analysed...

I don't know another way to approach problems.

Don't be! You are searching for knowledge on how to accomplish a task. That's awesome and commendable, not something to be sorry about!

 

[StratTuner]

I would humbly add that in my experiance, it's the car *running* that is the big no-no.

If just the car battery is being used for a source of 12V power, then the bike does not know or care where that 12V is coming from.

and that's not what I would have done.
I would have gone out, connected them both as Mr. Friday advised, AND STARTED THE CAR...
because that's how I've always done it.

Did Mr. Friday say to start the car or not.... hmmmm... I'll have to go back and re-read his posts.

 

[Jay Fridays]

Do not jump your motorcycle off a car battery .............................................................................................................................................................................................

Amps not volts is the problem here !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Both are 12 volt, but the auto is around 500 amps and the motorcycle around 20 amps.

Had a customer I really felt sorry for. He was an honest customer. He drove a new venture royal home and parked it in his garage. Left the key on. Next morning he jumped it off his dulley, 1500 amps. Fried everything all the way back to the tail light bulbs. NOT COVERED BY WARRANTY.

Ok to jump off another 20 amp system (motorcycle, atv, etc), but never an auto.

Also, had a customer who had a rhino, that purchased a 125 amp lawn mower battery at walmart. Fried the 20 amp system when he put it in the Rhino.

OK to carry jumper cables to jump off another bike, but not a car!!!

An yes I have heard the stories from people who jumped off a car, and stated it worked great. Not long before they were replacing starter motors, etc.

YES I DID SAY TO START THE CAR, but BEFORE MAKING THE CONNECTIONS

1) 500amp ?!? 1500 AMP ?!?! You are talking about Cranking Amps !!! I told him to start the car BEFORE making any connections, so forget that worry.

2) You don't have to be Nikola Tesla to realize you cannot put a car/truck/lawnmower battery in a motorcycle...lol And that is hardly what anyone has suggested.

3) Once the car is started, the battery simply becomes your 12v power source for charging your bike.

4) When you plug your cell phone into a 20amp wall outlet, is 20 amps being crammed into the cell battery ?!? ABSOLUTELY NOT !!! The wall has the power available, however your cell phone will only draw the 1.1 amps it needs to charge.

5) I have never replaced a starter motor


--------------------------------

As for leaving both vehicles not running? I have never done this without starting the "good" vehicle. Just never tried....lol

In theory, I suppose it would work. However. the running voltage is only going to be around 13.? volts .....It's not much different at all to the 12.? volts it would if you left the car off

But I want to reemphasize starting the car before making the connections.

 

[showkey]

Here is a wild *** guess...........the battery is not being charged by the tender because:

It is not connected properly wiring, connection eyelets, polarity, inline fuse on the tender to mention a few............the battery most likely had 7 volts before charging and still has 7 volts and that is not enough to get the instruments to light......especially it is not 7 volts with the key on when the lights and pump are on.........most likely drops to 2-3 volts with the slightest load.

Got a neighbor with some mechanical/electrical skills??........

 

[Jay Fridays]

WHy is this such a long thread?!?! ...lol
jump the battery... I bet I know how this is gonna play out... He's gonna jump the battery, and everything is gonna be fine.

 

[L.B.S.]

WHy is this such a long thread?!?! ...lol
jump the battery... I bet I know how this is gonna play out... He's gonna jump the battery, and everything is gonna be fine.

More than likely, and I hope so for Strat's sake so he can go ride and everything is all good

Some people process info in different ways and can be understandably easily sidetracked with information overload, if they are not super familiar with a particular thing.

What to you, may be the simplest thing evar, could be looked at like some horrible daunting mountain to work their way up and over. For me, it's math, lol

I also am a 'lectrissy challenged individual. It scares the daylights out of me, and I go way overboard to do the simplest things where it's involved.

 

[StratTuner]

Actually, I hate to tell you this, but a 12V battery should always read well over 12V

It can be considered dead @ anything under 12

Open Circuit Voltage of 12V battery after vehicle is off for one hour.
12.6 V 100%
12.4 V 75%
12.2 V 50%
12.1 V 25%
Less than 12 volts = Dead

Interesting! Doesn't make much sense....

seems like it should be:
00 = 0%
06 = 50%
12 = 100% (on a 12V battery)

Perhaps I don't understand percentage when applied to a battery?
How is 12.2 50% of 12.6? (I suppose it doesn't matter....)

 

[StratTuner]

WHy is this such a long thread?!?! ...lol
jump the battery... I bet I know how this is gonna play out... He's gonna jump the battery, and everything is gonna be fine.

Jay, I have an immense respect for you as an electrician. You know things I will never know, and you've worked hard to learn them.
No, I won't be jumping the battery.

If I could jump from another NC700x... maybe... but I can't.

 

[tooblekain]

With regards to using a car battery to jump start your bike...I would only use this as a last resort if you cannot get it bump started. Im thinking the NC700X should be easy to bump start. (that's if you're NC is manual transmission)

IF you use a car battery, make sure the car is OFF!!!

You can use a regular car battery charger, but be sure to remove it once it is fully charged or about 75% charged. If doing the 75% charge method, remove from charger and then hook up to a battery tender.

If you are having problems with your battery holding a charge, you will need to load test your battery. Charge your battery fully and then run a load tester on it (I got mine at Harbor Freight). You will be able to tell in 5 seconds or less if your battery is good or bad.

 

[StratTuner]

Got a neighbor with some mechanical/electrical skills??........

Yes. You guys online.

Is it charging? I have minimal evidence that it is.
The "Battery Tender Jr." manual says that the red light on the unit will flash if the battery is NOT charging.
The red light will stay ON if the battery IS charging.
The red light is solid and has been so for the last 10 hours (approx.)

I plan to use the multimeter to test it again in 30 minutes (1 hour since last check).

If the reading goes up, then I'm pretty sure it's charging... if it stays the same, then it's time to buy a new battery.