I’m happy to use the Shorai Lithium IRON battery along with updated mosfet reg/rect on an older model bike. My choice. One of the reasons is, the IRON version of the lithium batteries is a lot more stable and runs cooler. ( Not to argue, but just to say don’t put the same stigma on all types if lithium battery) A bit of info from a few years ago, https://www.newcastlesys.com/blog/lithium-ion-vs-lithium-iron-batteries
Sounds like a wicked idea, it's why I really pushed to allow anyone to tag a thread.... in the early days it was "why doesn't my Mutley have a back brake". And just to reiterate my advice in the first and every thread since.... my concern isn't lithium per say, but the charging circuits on certain models of Ducati, specifically the location of the heat sink components. I would also advise against over and under sized lead acid batteries, without investigation into regulator temperatures during actual running conditions. Super Quick Ducati Advice 1/ Fit upgraded cables to the battery to bike frame, battery to starter solenoid and starter solenoid to starter motor. If the starter motor has an earth strap upgrade that. 2/ Over winter remove batteries and charge once a month or If you prefer, fit the correct / recommended battery tender. Especially important for bikes with alarms/trackers. 3/ If the Ducati has the regulator / rectifier located near the exhaust, relocate it to a cooler location, like the rear number plate hanger. IMHO I believe it will increase the life of said component and reduce any fire risk. 4/ For a reliable motorcycle consider that all batteries are a consumable, with a finite usable charge / discharge cycle rate and overall lifetime. I replace them every five years or earlier. 5/ If you are considering changing the battery away from the OEM consider any impact this may have on the charging circuit, specifically the temperature of the regulator and/or the effect on the proposed battery. a) Charging currents / against voltage. b) Any over current / Voltage protection you may need to add. c) Low battery voltage protection (a disconnect circuit) to prevent excessive current during charging from low. These Big V twins hammer batteries during starting; like diesels did for most us when we took government advice (incentives) and upgraded our cars from petrol.
I've had a Magneti Morelli LiFePO4 battery on my monster for about 4yrs now. The reg/rec is an electrex replacement for the original (which failed and boiled the original battery dry due to overcharging) and is located in full cooling airflow under the bottom yoke. The reg/rec cooling has been ever so slightly improved by relocating an adjacent multiconnector which had formerly masked the airflow on one side. The battery weighs a staggering 5.5kg less than the original and this is just too tempting a weight loss to ignore. Also, the reduced size means I can now carry a tyre plugging kit on the bike in the freed-up space. So now to the main point .. It seems to me that overcharging is where the potential danger lies with lithium batteries. Is it not possible therefore, to add in an over-voltage protection circuit which would isolate the battery in the event of the system attempting to overcharge it ? (perhaps with a warning light to indicate when/if the system becomes operational, so you know what's going on when your electrics fail) ? In other words, the bike would then fail to a safe position (ie conk out) rather than to an inferno (ie not ideal but the lesser of two evils). This seems (to my not-particularly-electrically-minded brain) to be a simple and effective way to avoid potential fire hazard associated with lithium batteries. I have asked this question many times before, both here and elsewhere, but as yet I have not found the answer. Worth another try though, I reckon. Any electrical wizard advice on the above would be very gratefully received.
I'd hate to be in Politics (like @finm), it's amazing how people repeat bits and either intentionally or not, then miss the actual message / words as written. It was the regulator/rectifier that caught alight to the battery tray on the fire I attended to on a road/race style Ducati a couple of years back. It happened to have a Lithium battery attached and was the first time the bike had been ridden since the battery was fitted.
So if you’ve got a quality shindengen mosfet reg/rect fitted thats designed to be more stable and run cooler and a lithium IRON battery thats more stable and runs cooler. And you’ve got airflow to it. What is it that ducati are now doing on the latest bikes thats different? Better circuitry/electronics, better wiring........? Genuinely interested.
have you read the Links of post #41 solution: https://www.junkers-profly.de/Batte...Ueberspannungsschutz::754.html#horizontalTab1
have you tried google translater, what do you want to know here a wiring diagramm https://www.junkers-profly.de/Batte...Ueberspannungsschutz::754.html#horizontalTab2
Your reg/rec manufacturer states do not use Lithium, the main problem isn’t over charging, what would your insurance company say to that do you think tell you what, tell them these facts and let us know what they say
Ah ...... No, I hadn't read those links. But that is precisely the sort of device that I had in mind. I'm overjoyed, tbh. Nice one .. thanks a lot.
Utopia, Exige is referring to this from Electrex, which was in post 12 https://www.dropbox.com/s/f5ekhntoafnc693/Battery Types.pdf?dl=0They
I wrote to Ducati Italy asking about the associated issues of fitting Lithium batteries to older model Ducati motorcycles such as my 1098R. Had to chase them as no answer had been received - after which (surprisingly) an answer came from Ducati UK and not Italy: Dear Mr Sonley, "Thank you for your recent customer care request regarding information on fitment of Lithium batteries. Unfortunately we are only able to advise that you fit the specified battery to your particular bike as we would have no experience of fitting a different type of battery and the consequences." They then went on to say: "I am sorry that I am not able offer any other advice on your request, and it may be an option to speak to the battery supplier you are thinking of using." Yours Sincerely **** ****** Technical/Warranty Advisor Ducati UK The surprising thing is having emailed from my work address how did they relate this to my private email and reply there......... Not sure why a battery manufacturer would tell you about the Ducati electrics and suitability - but I guess if the manufacturer of said battery will insure a payout on your bike if it burns, then there is no issue... Ducati advise only use what the bike was designed for. The question I asked actually stated 'buying an approved Ducati Lithium Battery from a Ducati Dealer' so looks like Ducati themselves so don't do it
"Is it not possible therefore, to add in an over-voltage protection circuit which would isolate the battery in the event of the system attempting to overcharge it ?" Well, my 1098S has one built in. When the voltage gets over 14.7v the clocks shutdown to protect themselves from damage. Took me a while to work out the problem as you'd be doing 70ish or any speed in the upper rev range then all the electrics would cut out. Stop, cycle the key.... fires up straight away. Turned out to be the Reg/Rec and the clocks have a protection circuit.
