Charging issues after adding a 1500 watt audio amp
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Stage II
Joined: Apr 2024
Posts: 2
Likes: 0
From: Ga
Charging issues after adding a 1500 watt audio amp
I have a 2013 FLTHK. I added a 1500 watt amp to power 6 speakers no subs just 6.5s in fairing, 6x9s in saddle bag lids and the5.25 pods. Bike was charging fine until the amp got added. I have added an Aquatics radio before the amp and it was charging fine. Now it won't charge properly with the radio on. It will charge with the radio off. We just bought a brand new NOCO LI battery and fully charged it up and now the bike is completely dead. Please help!!
Time to break out a multimeter
Regulators and stators don't last forever. The additional draw could have finished off one or both of them.
Electrical diagnostic
Regulators and stators don't last forever. The additional draw could have finished off one or both of them.
Electrical diagnostic
Seasoned HDF Member
Joined: Mar 2021
Posts: 18,245
Likes: 3,679
From: backwoods
Well it doesn't work when you have amp running. So it has something to do with it.
Maybe you are right. But I question if you added to big of load for your charging system. But it works without the amp. Maybe your stator is failing. You could check the output. I kinda doubt it, but wouldn't hurt do it. Maybe all the other kids are running this amp just fine. 1500 watts is a big load.
Are you riding enough to keep up with charging this new big load or just short trips?
Maybe you are right. But I question if you added to big of load for your charging system. But it works without the amp. Maybe your stator is failing. You could check the output. I kinda doubt it, but wouldn't hurt do it. Maybe all the other kids are running this amp just fine. 1500 watts is a big load.
Are you riding enough to keep up with charging this new big load or just short trips?
Last edited by Rounders; Jul 7, 2025 at 09:59 AM.
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Seasoned HDF Member
Joined: Aug 2006
Posts: 24,492
Likes: 30,780
From: Pennsylvania
I have a 2013 FLTHK. I added a 1500 watt amp to power 6 speakers no subs just 6.5s in fairing, 6x9s in saddle bag lids and the5.25 pods. Bike was charging fine until the amp got added. I have added an Aquatics radio before the amp and it was charging fine. Now it won't charge properly with the radio on. It will charge with the radio off. We just bought a brand new NOCO LI battery and fully charged it up and now the bike is completely dead. Please help!!
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Stellar HDF Member
Joined: Jul 2016
Posts: 2,213
Likes: 671
From: Andover, MN
Well it doesn't work when you have amp running. So it has something to do with it.
Maybe you are right. But I question if you added to big of load for your charging system. But it works without the amp. Maybe your stator is failing. You could check the output. I kinda doubt it, but wouldn't hurt do it. Maybe all the other kids are running this amp just fine. 1500 watts is a big load.
Are you riding enough to keep up with charging this new big load or just short trips?
Maybe you are right. But I question if you added to big of load for your charging system. But it works without the amp. Maybe your stator is failing. You could check the output. I kinda doubt it, but wouldn't hurt do it. Maybe all the other kids are running this amp just fine. 1500 watts is a big load.
Are you riding enough to keep up with charging this new big load or just short trips?
Road Master
Joined: Jun 2019
Posts: 1,152
Likes: 1,248
From: Clayton, NC
I had similar problems with my Cicada amp and speakers in my 2019 Tridglide. It fried my LiPo battery in the first week. I put in a regular lead acid battery and all my problems went away. I learned the LiPo batteries have very high output for short burst, but do not like long periods of heavy loads.
Last edited by theheder; Jul 7, 2025 at 10:35 AM.