Battery draining question
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
Hi from the UK and welcome to HDF. There are several things that may be wrong, from the battery, to alternator, to rectifier, etc. What is your bike and give us some more info, so we can help diagnose things for you.
Cruiser
Joined: Aug 2007
Posts: 131
Likes: 0
From:
My '86 FLHTC has the same issue.
I had it checked by the local dealer 2 weeks ago, and everything checked out. At idle, 12.7 Volts, 13.8v @ 3000 rpm. Battery 366CCA, 10.8 Volts at start.
If I just run short local runs >5 miles at a time, the battery will not start the bike.
If I let it sit for 2 days, battery is dead. My bike sits on the charger when not in use.
Battery is good etc.
The mechanic did suggest disconnecting the radio as there may be a fault in the radio that causes an intermittent high drain. When I checked the battery drain, it was only 0.01 amp.
I have a new 3 phase 32 amp charging system, and have just accepted it now as a gremlin in the 25 yr old wiring.
Interestingly enough, if I ride 100 miles or so, no problem with the battery.
Like to "hear" from anyone else their experiences.
I had it checked by the local dealer 2 weeks ago, and everything checked out. At idle, 12.7 Volts, 13.8v @ 3000 rpm. Battery 366CCA, 10.8 Volts at start.
If I just run short local runs >5 miles at a time, the battery will not start the bike.
If I let it sit for 2 days, battery is dead. My bike sits on the charger when not in use.
Battery is good etc.
The mechanic did suggest disconnecting the radio as there may be a fault in the radio that causes an intermittent high drain. When I checked the battery drain, it was only 0.01 amp.
I have a new 3 phase 32 amp charging system, and have just accepted it now as a gremlin in the 25 yr old wiring.
Interestingly enough, if I ride 100 miles or so, no problem with the battery.
Like to "hear" from anyone else their experiences.
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