Stanton
Well-known member
GerryAZ said:I periodically ask the local battery store about lithium replacement for one motorcycle which has an alarm system that drains the battery when parked if I forget to connect a charger (even AGM does not tolerate repeated deep discharge). They sold lithium motorcycle batteries several years ago for a short time, but had too many problems. I saw a poster for lithium motorcycle batteries when I was in a couple weeks ago. I asked about them and found out they are starting to sell them again (different brand than before), but only by special order for now. I may try one for that motorcycle, but they told me that deep discharge might impact the internal BMS system (I don't understand why, but that is what I was told).
That last comment suggests they don't have a deep (pun intended) understanding of the subject, but I know from your many years of forum participation that you can probably figure it out. Remember that Lithium batteries can survive a much deeper discharge than any lead acid counterpart, and I have never had an issue with my mine (no matter how long I've operated in "accessory mode" or let my car sit at the airport). I would give it a try on your motorcycle...and post back with your experience.