AGM batteries don't have plates, nor do lithium as such, & optimates run a desulphate charge) discharge cycle to prevent that if I recall
Well that day didn’t go to plan r1250GS battery
- Thread starter G&T
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That flippin Internet...it’s a scary place. Casually googling as you do, I came across this video. It seems there are some known issues with valve compression adjustments as well as exhaust valve tolerances that could cause a fail to start. Read his updates in the comments section to see what they found
All batteries have plates, ANODE & CATHODE.
AGM batteries are still lead acid technology and have plates, instead of acid/electrolyte in liquid form it is suspended in AGM to about 95% saturation, they still suffer from sulphation in the same way as old style lead acid batteries.
Lithium batteries are still an anode & cathode makeup with a separator between the two, the separator deteriorates over time & can be permenantly damaged if charged incorrectly or especially if overheated or under high discharge rates.
An optimate is ok for short term use but constantly leaving it connected will damage a battery in the long term, desulphation with an optimate is purely a timed cycle which may remove some but not all sulphation, over time the amount removed becomes less and less, eventually killing the battery.
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Not done any harm on my last 3 bikes. I haven't replaced a battery in 10 years.
Luck or possibly not owning any bike long enough to do long lasting damage.
It's all about time and use with a battery. I have a 48 year old bike, it's only on its third battery.
The only style of intelligent battery tender I would trust is my NOCO Genius 10.
NeilCol
Registered user
Had my first battery problem on Saturday. Went out for a ride with a mate who decided he needed fuel.
I couldn’t be arsed to fill it so sat alongside and killed the engine. However, forgot to switch offf the bike. Heated grips, seat, lights all still on!!
5 mins later after he returned from filling up and paying it failed to start.
Luckily, the filling station also sold jump leads so after waiting a bit managed to jump it off his bike pretty easily.
So my own fault really, I’d read about the battery issues of others and so have always been sure to turn the bike off quickly, while also get it on a trickle charge if the bike is left more than a couple of weeks.
Saying that, I do wonder if the battery may well be on its way, it’s only 18 months old the bike and I’d expect a battery to be able to manage 5 minutes being on and not running.
Will keep an eye on it…and maybe invest in a booster pack.
I couldn’t be arsed to fill it so sat alongside and killed the engine. However, forgot to switch offf the bike. Heated grips, seat, lights all still on!!
5 mins later after he returned from filling up and paying it failed to start.
Luckily, the filling station also sold jump leads so after waiting a bit managed to jump it off his bike pretty easily.
So my own fault really, I’d read about the battery issues of others and so have always been sure to turn the bike off quickly, while also get it on a trickle charge if the bike is left more than a couple of weeks.
Saying that, I do wonder if the battery may well be on its way, it’s only 18 months old the bike and I’d expect a battery to be able to manage 5 minutes being on and not running.
Will keep an eye on it…and maybe invest in a booster pack.
Read my extensive thread "Big Pile of Dogshit" in the 1250 section.
Its a well trodden path by many 1250 owners.
Its a well trodden path by many 1250 owners.
Why oh why did I trade my hex head for a 1250. Currently sat at my local Sainsburys petrol forecourt with a bike that yet again won’t restart, awaiting BMW assist to message me with a time to attend. I’ve only ridden the bloody thing twelve miles home, I wish I hadn’t stopped to get petrol. Got a euro trip planned next month, I have zero faith in this turd.
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