March 7th, 2012, 10:25 PM | #1 |
ninjette.org member
Name: Drew
Location: Canada
Join Date: Nov 2011 Motorcycle(s): '10 250R SE Posts: 79
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Electrical Issue - Dead Battery?
Alright guys so my ninja 250r had its battery die because I didnt know it needed a battery tender when storing it. Long story short I charged it with a 2A car charger for 30 mins to raise my voltage from ~11.3 to 12.7 IIRC , just enough to start.
Anyways I know the battery charger wasnt the proper way to do it but it was only 30 mins. So Im riding my bike and I have a voltmeter installed with a digital clock and temp sensor , so while riding the bike rides okay at high 13's v but when I come to a stop, the bikes idle starts to drop a bit and I notice my voltage drop to ~11.7-11.9 and I am required to rev the bike to kick it up to 14 volts so it wont stall . Would this sound more like a battery issue ? or another electrical issue? I know with cars, that batterys are just for starting the car and the alternator wil provide the power, but im not entirely sure with bikes. It seems like the stator is working since its kicking hte voltage up when some gas but at idle, im assuming my battery isnt holding a charge? BUT the bike is still capable of restarting it self .. well at least hte last time I checked... Input? thanks in advance!!
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March 8th, 2012, 02:14 AM | #2 |
Milkshake Drinker
Name: Skippii
Location: Richmond, Va
Join Date: Aug 2011 Motorcycle(s): 2007 Orange DRZ400-S, 2005 Ninja 250 & Custom Thundercunt Dirt Chopper Posts: A lot.
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Ninjas have something like a 7Ah batterY. You charged it with 2a * 0.5h = 1ah minus charging ineffeciency (35% for nimh, no idea what pbh2so4 is). So you've got a battery that is around 10% charged. Your reading sound preety good for that. Keep riding and charging it.
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March 14th, 2012, 08:05 PM | #3 |
ninjette.org member
Name: Brian
Location: Los Angeles
Join Date: Mar 2012 Motorcycle(s): 2008 Ninja 250r Red Posts: 93
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My battery died the other night, left the key in and drained the battery.
I got a hold of a car charger with a 2a trickle charge setting. Regular car battery charters will overload our little batteries. If you don't have a charger handy. You can always roll start and once it comes to life. Ride it for about an hour and the battery should.be good as knew. But you will have to ride it for an hour or.so. be prepared for.that if doing option 2. If you want to know how to do that let.me know Hope this helps bro |
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March 14th, 2012, 10:31 PM | #4 | |
ninjette.org guru
Name: Samual
Location: Utah
Join Date: Dec 2011 Motorcycle(s): 2010 Ninja 250r (RIP) Posts: 258
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Quote:
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March 14th, 2012, 10:42 PM | #5 | |
ninjette.org member
Name: Brian
Location: Los Angeles
Join Date: Mar 2012 Motorcycle(s): 2008 Ninja 250r Red Posts: 93
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Quote:
Really hope i don't have to replace the battery. It seems like it is holding a charge. Worse case, roll-start and ride for an hour to let the battery charge. |
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March 14th, 2012, 10:49 PM | #6 | |
ninjette.org guru
Name: Samual
Location: Utah
Join Date: Dec 2011 Motorcycle(s): 2010 Ninja 250r (RIP) Posts: 258
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Quote:
For the OP keep in mind you have to ride the bike to charge the battery, if the rpms are too low (<4k stock, more depending on your upgrades) you won't actually be charging the battery. |
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March 14th, 2012, 10:58 PM | #7 | |
ninjette.org member
Name: Brian
Location: Los Angeles
Join Date: Mar 2012 Motorcycle(s): 2008 Ninja 250r Red Posts: 93
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Quote:
Tommorow I'm going for a long ride! Highway miles to be sure its over 4k. I'll go out for about an hour. This should enough to charge it. |
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March 16th, 2012, 10:33 PM | #8 |
ninjette.org member
Name: Drew
Location: Canada
Join Date: Nov 2011 Motorcycle(s): '10 250R SE Posts: 79
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Awesome thanks for the replies guys! I ended up using a 2A car charger for about 30 mins and it started right up! I've been riding it a lot the pas few days and the battery seemed weak from what I saw on my voltmeter.. But now everything seems to be better.
I also bought a motorcycle trickle charger which came in today I'll be installing the direct leads to my batt tmrw probably!
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[2010 250R SE] |
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March 17th, 2012, 12:25 AM | #9 | |
ninjette.org member
Name: Brian
Location: Los Angeles
Join Date: Mar 2012 Motorcycle(s): 2008 Ninja 250r Red Posts: 93
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Quote:
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