concours said:
Nater_Potater said:
As a follow-up to the "failed" Wassell stator, after much poking and prodding, it's a failing AGM battery! Open-cell voltage sitting on the bench after a charge is 13.1 (right about where it should be), the system reads around 13.8 @3000 rpm with the headlight on, then, with the headlight on and the engine at idle, all goes to hell. Sure, the charging system won't float everything at idle, but the battery had been carrying it through these low-rpm moments, just as it should. Until now. A load test of the battery shows about zero capacity.
I just replaced the battery in the ol' H***da last week. It was a conventional lead-acid, and the date inscribed on top is 10/08. That's six years of trouble-free operation, and it's electric-start only. I got eight years out of the prior battery!
I'm thinking of putting the Wassell back in, warts and all, and screw the AGM! It's conventional battery next spring for me.
Like EVERYTHING else today, there are good quality and also low-rent shat. AGM technology is not at fault here. What brand of battery?
Here is a good one:
http://www.dekabatteries.com/assets/base/0278.pdf
Ive had an Oddessey battery fitted to my Vincent for 7 years. Vincents don't charge well at low revs, and they're not exactly a rev monster of a bike, so batteries are 'a topic of conversation'.
I wrote a thread about my Vin a while back, its been a problamatic relationship... In the 7 years since the battery was fiited it has stood idle for long periods and it was even on the bike when it caught fire!
So, the battery is 7 years old... it is (i think) the smallest they did at the time... has only done approx 3,000 miles in all that time... and has NEVER been put on a charger... and is still going strong.
I have a Shoria on the Commando as I like the low weight. If it give me any grief, I'll be using an Oddessey.