Jump Start using a battery tender extension cord

 
I'm just wondering... if my battery is running low and I can't start the
bike, could I just connect the 12 foot extension cord that I have for
the battery tender from my quick connect cable to another bike with the
quick connect cable installed for a jump start?  Thanks!


--
Kendall F. Stratton III
Fort Fairfield, Maine USA
k3(86_the_Spam)@maine.rr.com
http://www.facebook.com/K3Stratton

 K3 wrote:

No, for two reasons-

1. Usually the battery tender quick connect cable is fused.  If not,
it should be.  The current moving between the bikes during a jump
start is too much and will blow the fuse.

2. The polarity will be wrong, if you connect an extension cable to
the quick connect cable of one bike, the free end of the extension
will have the same polarity (exposed male = earth, shrouded female
= +12) as the quick connect cable of the 2nd bike, resulting it an
enormous current due to cross connecting the batteries. So when you
plug the two cables together, and connect the earth of one bike to
the +12 of the other bike, and vice-versa, ...

If you have some other sort of extension cable that takes care of #2
you still have the fuses to contend with.  Also, the SAE two pin connectors
use for battery tender hookups aren't good for more than maybe 20 amps
at best for short duration.  You *might* get away with _charging_ one
bike's battery from another by hooking the proper crossover cable
between the battery tender quick connect cables, but only if the current
is limited by using narrow gauge wire or some sort of current limiter
like a light bulb or power resistor.

 On 2011-10-22 11:10 AM, Mark Olson wrote:

Thanks for the quick reply, Mark.  I'm glad I asked.  I guess I'll have
to invest in a pair of jumper cables specifically designed for a
motorcycle and/or ATV.


--
Kendall F. Stratton III
Fort Fairfield, Maine USA
k3(86_the_Spam)@maine.rr.com
http://www.facebook.com/K3Stratton

 K3 wrote:


Car jumper cables are fine, except their clamps are sometimes too big.
Others will tell you that you need special current-limiting cables for
motorcycles to avoid hurting the batteries.  I've jumped many bike
batteries using car cables and never damaged anything.

 

I've seen battery tenders that have an accessory that's a quick
connect going to regular battery clips, but that's probably also the
wrong polarity to clip to an external battery to start your bike.


    Ron
-
2003 FLHTCUI "Noisy Glide"
http://www.christianfamilywebsite.com
http://www.ronaldchristian.com