[Guest]

my 996 stopped working last month.I've been sittin' on it only.It'll turn over ever too slowly to start.So i hooked the jumper cables off my truck.It STARTED!! WOO-HOO! throttles fine too.Measures 11.8 volts at idle.And 13.4 at around 2500 RPMs.It has restarted under it's own battery,but SLOWLY,and cranking voltage drops to 7.5v The battery has been powering since Jan '01. I am now thinking my starting problem is BATTERY, not mechanical or starter related as before. What do you guys' think? Thanks' for any assistance you can offer a fellow 'isti.

 

[Guest]

Re: Dead Battery???(tests) (ducxl)

I think you need to buy a battery tender........

 

[Guest]

Re: Dead Battery???(tests) (ten~39)

I have one,but don't utilize it

. I got complacent and saw my (wife's) '05 XB12r as a LOT of fun cornering. Anyhow.....WOOOOOO-HOOOOOO!!! i just got back from a short blast on the 996. And it ran FINE!!! What fun! I have noticed they run better,OFTEN. I think i'll buy a battery now....thanks

 

[ducxl]

Pretty cool new board!!! Anyhoo,installed the new Battery yesterday and the 996 turns over now like CRAZY! I guess we can ONLY expect 4-5 years maximum life,HUH.

 

[drnknmnky13]

Pretty cool new board!!! Anyhoo,installed the new Battery yesterday and the 996 turns over now like CRAZY! I guess we can ONLY expect 4-5 years maximum life,HUH.

Some people would looove to get 4 years out of a battery on a duc

Those Buells are a lot of fun huh? I'm seriously considering one and making the duc track only.

 

[flyer8374]

Battery Voltage

I've got the same issue on my bike. I've had to buy a battery again after a year. I've got some mods to the bike, i.e. cams, pistons, crank, and not sure if that makes a difference, though. I always keep it on a tender, but for the life of me, have been having a difficult time turning over the bike, sometimes it doesn't turn over at all.

I check it with a voltmeter and when fully charged, it's at 13.34 volts. Is it just because of the mods that this happens...the hard time for it charging? I've also seen parasitic leakage of about 1.2 - 1.3 mA out of the battery. Is this acceptable, too? Thanks again for everyone's help. This board rocks!!!

 

[Hyperpasta]

Measures 11.8 volts at idle.And 13.4 at around 2500 RPMs.QUOTE]

Keep an eye on the Voltage regulator. At idle it should have read higher as the regulator should be dumping current into the already "Weak" battery.

As far as leakage goes, when facing the battery you'll find thre relays. The rubber holders have a high carbon content. If the rubber touches the blades, you have found your source of leakage. The Fix? Trim the rubber away from the blades, and the leakage should stop.

One last tip, get the larger battery cables from Martin at Motowheels to take some resistance out of the starter system. They work wonders! As well as helping the battery to last much longer.

 

[ducxl]

Thanks for the advice Art.Now,how do we diagnose the voltage regulator?Simple measurement at the battery/w multimeter? My mathesis also measures amps/w (what're amps?)the big C-clamp thing that clamps over the pos. terminal. I'll do some reading anyways in both my service and mathesis manuals.I can follow instruction but am not an electrician.

 

[Hyperpasta]

Take a look and read this site.

https://www.electrosport.com/electrosport_fault_finding.html

It will ballpark some of the symtoms of a faulty charging system.