Battery
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
Likes: 184
From: Indiana, USA
I have had excellent luck with absorbed glass mat (AGM) usually getting 7 to 10 years out of the battery using a Battery Tender in the off season.
The old lead acid batteries were lucky to see 2 years. What do you expect to get out of a Lithium battery and does the cost offset enough to justify?
The old lead acid batteries were lucky to see 2 years. What do you expect to get out of a Lithium battery and does the cost offset enough to justify?
Road Master
Joined: Nov 2018
Posts: 873
Likes: 159
From: FLORIDA
I have had excellent luck with absorbed glass mat (AGM) usually getting 7 to 10 years out of the battery using a Battery Tender in the off season.
The old lead acid batteries were lucky to see 2 years. What do you expect to get out of a Lithium battery and does the cost offset enough to justify?
The old lead acid batteries were lucky to see 2 years. What do you expect to get out of a Lithium battery and does the cost offset enough to justify?
Seasoned HDF Member
Joined: Jun 2012
Posts: 6,154
Likes: 2,561
From: CT/FL
I have a lithium battery in my chopper. The AGM batteries would only last a season and a half. Probably because they were inside the horseshoe oil tank, and maybe undersized for the 96" S&S motor. This will be the fourth season on the lithium, and it still cranks better than the AGM ever did. Key is to use a cutoff switch to prevent killing the battery when stored.
I'll probably get another lithium if I convert my 72 FX to electric start, so it fits in the original battery box.
I'll probably get another lithium if I convert my 72 FX to electric start, so it fits in the original battery box.
Advanced
Joined: Nov 2024
Posts: 80
Likes: 13
Great post. My lead acid battery's are not very good owned my 1978 1/2 80c for five years and bought 4 battery's best one was from NAPA it lasted almost two years. One only lasted 6 months. Now Earth X offers a battery. My Harley charge system is compatible but my off season tender will not work. Their tender is not that expensive. Question is have any of you guys used the.Earth X Harley Battery
? AJ
? AJ
Trending Topics
Club Member
Joined: Mar 2009
Posts: 66,114
Likes: 51,396
From: Niles Canyon Ca.
Wouldn't suggest it without upgrading the charging system to the later 32amp unless it's a kick only bike with a small battery. Need dedicated chargers, trickle included, old style will damage them. They need to be "woke up", meaning turn the lights one for a few minutes to load the battery before they will throw full amperage, and the big one let it drop below a certain voltage it's toast they won't come back from that I learned the hard way. Ran a big $$$$ Antigravity lith. in mine, I'll do another when the compression releases go in later this winter.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Club Member
Joined: Mar 2009
Posts: 66,114
Likes: 51,396
From: Niles Canyon Ca.
I have had excellent luck with absorbed glass mat (AGM) usually getting 7 to 10 years out of the battery using a Battery Tender in the off season.
The old lead acid batteries were lucky to see 2 years. What do you expect to get out of a Lithium battery and does the cost offset enough to justify?
The old lead acid batteries were lucky to see 2 years. What do you expect to get out of a Lithium battery and does the cost offset enough to justify?
Seasoned HDF Member
Joined: Jun 2012
Posts: 6,154
Likes: 2,561
From: CT/FL
Wouldn't suggest it without upgrading the charging system to the later 32amp unless it's a kick only bike with a small battery. Need dedicated chargers, trickle included, old style will damage them. They need to be "woke up", meaning turn the lights one for a few minutes to load the battery before they will throw full amperage, and the big one let it drop below a certain voltage it's toast they won't come back from that I learned the hard way. Ran a big $$$$ Antigravity lith. in mine, I'll do another when the compression releases go in later this winter.