Triumph Thunderbird Battery Size
GarageDex's powersports battery data shows the Triumph Thunderbird takes a YTX20HL-BS battery, 310 CCA, 18Ah. Battery fitment varies by year - see the table for each range.
Battery fitment by year
| Years | Battery | CCA | Ah | Equivalents |
|---|---|---|---|---|
| 2009-2018 | YTX20HL-BS | 310 | 18 | - |
| 2002-2003 | YTX14AHL-BS | 210 | 12 | YB14L |
1600cc motorcycle. Match the exact part code and terminal layout. Equivalents are cross-referenced parts that fit the same tray.
Battery for your Triumph Thunderbird
The recommended part is a YTX20HL-BS. Match that code (or a listed equivalent) - powersports batteries are size- and terminal-specific, so the code matters more than the brand. Worth adding: a battery tender - sitting unused is what kills most bike and ATV batteries, and a tender keeps it healthy over the off-season.
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Frequently asked
What battery does a Triumph Thunderbird take?
GarageDex's powersports battery data shows the Triumph Thunderbird takes a YTX20HL-BS battery, 310 CCA, 18Ah. Battery fitment varies by year - see the table for each range.
What are the Triumph Thunderbird battery specs?
The recommended YTX20HL-BS is rated 310 cold cranking amps and 18Ah. Match the part code and terminal layout - powersports batteries are size-specific.
Does the Triumph Thunderbird battery change by year?
Yes - the fitment differs across the years we cover: 2009-2018 uses YTX20HL-BS; 2002-2003 uses YTX14AHL-BS. Match your exact year in the table.
How do I keep a motorcycle battery from dying?
Sitting unused is the biggest killer - powersports batteries self-discharge and sulfate when parked. Keep it on a battery tender/maintainer during the off-season, and it'll last far longer.