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Interesting find re Battery

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Ken-Guzzibear View Drop Down
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    Posted: 01 Oct 2018 at 12:06
I knew the battery was on it's last legs when it was taking more then the overnight charge to re charge .... it was working but starting was sluggish I got a new battery earlier in the yr from Tayna liked the new one as both terminals have a wee flap over them. I had noticed the occasional stutter on the ol V1000, but hey it is now 42....any way commissioned new battery last weekend, filled it let it stand 24 hrs, gave it a charge cycle as recommended then used the bike last Wed/Thurs, What a huge difference, starting obviously it really spun 'er up BUT the performance on the road was noticeable it felt smoother tickover was a lot steadier, it may be just me but ....when you check your battery ands it is showing just above 12v ...... etc .... I find my Battery, the oem lead acid is way more forgiving and they tend to last 4-7 yrs higher if used more lower if not used as much ....just an observation the bike is the 76 V1000 carbs with points ign ....
The Older i Get, The Better I Was
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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 01 Oct 2018 at 19:58
One of the things with an elderly battery is the volts drop at the coil, missing sparks most noticeable at high revs but does happen at low revs too.

A twin wants to fire every revolution so for example at 6000rpm that's 100 times per second, and the firing circuit, whatever it is, may not have sufficient time to recharge between each shot if the volts are down. Some of the firing charge is held in the coil, and with points the condenser, and electronic the firing pack (usually capacitor discharge).

A good battery will be showing 12.6V or better. 12.0V is only 25% charged but it should come up to 12.6V on charge and stay there. If it refuses to hold a decent charge voltage it is dead. If it is 11.9V or below they won't charge and is dead.

The best performance will indeed be from a wet lead acid starter motor, either SLA or open which because it can be maintained can last longer and 7 years is typical. Although having said that I have this year had a 5yo SLA and a 3yo open die on me, dead cells.
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rapheal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rapheal Quote  Post ReplyReply Direct Link To This Post Posted: 01 Oct 2018 at 20:14
I had two problems with my breva last year
touring Belgium I noticed that it was jerky when starting and juddered badly, and seemed ot be running off key, also the heated grips kept turning off
I took the battery and charger to my local battery place, it seems the optimate had a duff capacitor and was not charging properly although it did show a fault light, and one cell of the battery was down
stuck a new battery on, and got a new cetek charger and its running smoothly again and the heated grips are staying on ???
Tony Checked the data in the ECU when he serviced it but no faults showing, so it must just upset it enough to make it misfire
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