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Thread: Yuasa Battery - Internal Failure

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  1. #1

    Yuasa Battery - Internal Failure

    I've had a Yuasa YTX14H-BS in my '08 Uly since I bought it a couple years ago. The battery was in my '03 Triumph Sprint ST for a very short time - when I bought the Uly, I sold the ST. The Yuasa stayed with me. The Yuasa is rated at 12.6 AH / 240CCA.

    The original installation date was 1/26/19. IIRC, I put it in the Uly in March.

    I was never really confident in the Yuasa - the bike would do the 'Big-Inch Harley Grunt', then start. Mostly at the first start in the morning. I figured I'd look into something with more ass when the Yuasa failed.

    Which was yesterday.

    I rode the bike to work - everything was normal. Went to run home - the bike started to crank, then everything was gone. Sort of like the 'bad connection' symptom. So, I checked the connections - nada. Checked fuses - also nada. Then, I tried shorting the battery terminals with a wrench. Nothing!

    Brought out a multimeter - the battery read 10.2V. When I turned the ignition switch 'On', it went to 1.2V. Seems something let go inside the battery.

    Anyway, called a buddy - he brought me an AntiGravity LiFePO4 battery he had laying around. Bike started immediately!

    While I was waiting for him to show, I started looking for a Li-ion battery. The Shorai and AntiGravity batteries are roughly $290. Then I found Amazon is selling Noco (the battery charger guys) branded batteries that look suspiciously similar to the AG batteries - $129. It'll be here Friday.


    I'll report back when I have a week on the new battery.

  2. #2
    Senior Member Cooter's Avatar
    Join Date
    Dec 2012
    Crawling up your skirt
    The Lunaticfringe Industries patented 'Buell Bump" is unavoidable. Tap the start switch, release, and then hold it. Even at 240CCA. Heck I just rode the 2022 Sportster S with the Revolution 1250 at IMS and it did it to me. Twice. FUN ride though a bit small.

    Battery rule #1: Batteries are batteries and cheap batteries are cheap batteries, no matter the construction or magic beans inside them.

    IMO, at the $129 level and a name brand you should be OK.

    All the Shorai LFX14 batteries I saw were $120-$140? Thats what I've been using in both the XB-Ss and the EBR for about 4 years now. They will take a regular charger /float charger but are older tech and should use a Shorai maintainer to balance the cells. Cells. Interlinked. In the blood black the darkness began to creep.

    Whew! I digress. Most newer Li-Ion have that circuitry built in so a special charger is no longer needed. I have had only great experience using Li-Ion. See rule #1.

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