Why Do I Always Forget?!?!

Boatguy · 08-16-2023, 07:17 PM

I just remembered that for the third time now I have forgotten to disconnect my battery when I left the motorcycle for a long period of time.

Ugh.

Somehow the lithium battery survives. I guess the BMS takes care of it.

Sucks though. Will have to jumpstart it yet again

zero_dgz · 08-16-2023, 08:31 PM

It does. Once a certain pack voltage is reached, the BMS shuts off the output to prevent damage to the cells.

Do you have some kind of massive parasitic load? I leave my lithium battery unattended in my KLR all winter without incident, every year.

Boatguy · 08-16-2023, 10:21 PM

Quote:

Originally Posted by zero_dgz

It does. Once a certain pack voltage is reached, the BMS shuts off the output to prevent damage to the cells.

Do you have some kind of massive parasitic load? I leave my lithium battery unattended in my KLR all winter without incident, every year.

Yes. The ECU seems to stay on as a small parasitic load unfortunately. Wish it just blanked out when you turned the bike off for a while and shut down.

It seems to take about 2-3 months to drain the battery

**JerryHawk250** · 08-17-2023, 08:42 AM

Did you add an aftermarket USB port? Some will drain the battery if they are not switched.

Boatguy · 08-17-2023, 02:19 PM

Quote:

Originally Posted by JerryHawk250

Did you add an aftermarket USB port? Some will drain the battery if they are not switched.

Yes. That too.

China Rider 27 · 08-18-2023, 10:17 PM

You can fix that problem with a some work. The Team figured out you need a disconnect switch to isolate the battery. We couldn't find a switch that took up little space or would allow the proper thickness so we took two pieces of 8 gauge home depot wire and soldered connectors on each end. One mounted to the negative terminal of the battery, the other to the negative wiring connection. Ran it down to right above the starter and put a bolt through the 8 mm connector on each wire and tightened it. When we store the bike we unbolt it and use a piece of rubber hose to make sure they do not make contact. Works great and its out where you do not have to take the seat off to mess with it. It also will play havoc with someone trying to steal it!

A lithium battery does not need to be charged all the time it just needs to be prevented from being drained.

That Jeffery.... a mind like that, 5 posts, you need to get more work out of him! CG strong, Ride Hard!

08-16-2023, 07:17 PM	#1
Boatguy Join Date: Feb 2021 Location: Northeast Posts: 929	Why Do I Always Forget?!?! I just remembered that for the third time now I have forgotten to disconnect my battery when I left the motorcycle for a long period of time. Ugh. Somehow the lithium battery survives. I guess the BMS takes care of it. Sucks though. Will have to jumpstart it yet again __________________ 2020 Lifan x-pect
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08-17-2023, 08:42 AM	#4
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,568	Did you add an aftermarket USB port? Some will drain the battery if they are not switched. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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08-16-2023, 08:31 PM	#2
zero_dgz Join Date: Jan 2020 Posts: 254	It does. Once a certain pack voltage is reached, the BMS shuts off the output to prevent damage to the cells. Do you have some kind of massive parasitic load? I leave my lithium battery unattended in my KLR all winter without incident, every year.
	0

08-18-2023, 10:17 PM	#6
China Rider 27 Join Date: Dec 2018 Location: PNW Posts: 982	You can fix that problem with a some work. The Team figured out you need a disconnect switch to isolate the battery. We couldn't find a switch that took up little space or would allow the proper thickness so we took two pieces of 8 gauge home depot wire and soldered connectors on each end. One mounted to the negative terminal of the battery, the other to the negative wiring connection. Ran it down to right above the starter and put a bolt through the 8 mm connector on each wire and tightened it. When we store the bike we unbolt it and use a piece of rubber hose to make sure they do not make contact. Works great and its out where you do not have to take the seat off to mess with it. It also will play havoc with someone trying to steal it! A lithium battery does not need to be charged all the time it just needs to be prevented from being drained. That Jeffery.... a mind like that, 5 posts, you need to get more work out of him! CG strong, Ride Hard!
	0