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Yuasa YTX20L-BS Replacement Batteries

Your Yuasa YTX20L-BS battery (also known by the stock code YUAM320BS) is the most widely used motorcycle battery size in the world. Before you buy a replacement it is important to compare battery specs such as CCA and amp hour (Ah) as there have been several upgrades. Aside from bikes, Yuasa Battery Inc. is the #1 manufacturer of powersport batteries for snowmobiles, four wheelers, side-by-sides, scooters and personal watercraft. As the leader in this market they have set the JIS standard for what you should expect. Impact Battery has replacement batteries that compare favorably on all or some of the standards including price, CCA, AH, warranty and location of manufacture.

What About the GYZ20HL?

The latest upgrade for the YTX20L-BS is the factory sealed GYZ20HL AGM battery. It has the exact same footprint as the old bottle stock version but with huge internal differences. The GYZ series crams more lead into the battery which increases the amp hour capacity (AH). they also uses some different alloys to help reduce internal resistance which in turn increases the CCA. MotoBatt, with their two year warranted MBTX20UHD batteries, use a similar Power Balanced system. This new breed of battery responds far better to the power demands we require from our "toys."

YTX20L-BS vs. YTX20HL-BS

One letter makes a world of difference! The ‘H’ signifies a high output version. When we compare the battery specs, in this case, the original version of the 20L-BS battery has 270 cold cranking amps (CCA). The 20HL-BS provides 310 CCA. Everything else including the dimensions (6 7/8" long x 3 7/16" wide x 6 1/8" tall) remains the same.

They are both dry charge AGM also called bottle stock type batteries. This means they come with an acid bottle and you have to fill, charge and seal the battery prior to use. There is a factory sealed AGM version available by Moto Classic, Deka and MotoBatt.

Battery Cross Reference

MotoCross, another Yuasa Inc. brand, uses the same part number system. However they do adjust the internal stock code of YUAM320BS by removing the leading YUA. Moto Classic, Scorpion, Chrome and few others have sealed AGM versions of the YTX20L-BS and simply use the root part number by dropping the 'BS'. Most competitors will adjust the beginning of the part number to better reflect their own brand, for example MotoBatt uses MBTX20U , Power Sonic uses PTX20L-BS and Walmart uses ES20LBS. They may also remove the dashes between the letters and numbers or append additional letters after the main sizing info.

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  • ETX20L Battery
    • Cold Cranking Amps (CCA):310
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):6.87 x 3.44 x 6.12
    • Capacity Amp Hours:17
    • Warranty:1 Yr Replacement
    YTX20HL

    Moto Classic YTX20HL Sealed AGM Battery

    $105.95

    $84.95

    • Cold Cranking Amps (CCA):310
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):6.85 x 3.39 x 6.14
    • Capacity Amp Hours:20
    • Warranty:2 1/2 Years
    MBTX20UHD MotoBatt Battery w/ small terminals and bottom spacer
    • Cold Cranking Amps (CCA):310
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):6.89 x 3.43 x 6.1
    • Capacity Amp Hours:21
    • Warranty:24 Mo (1Yr + 1Yr)
    UPG's Kinetik APTX20HL-BS Replaces Yuasa YTX20HL-BS
    • Cold Cranking Amps (CCA):310
    • Chemistry:AGM - Dry Charge
    • Dimensions(in):6.89 x 3.39 x 6.14
    • Capacity Amp Hours:18
    • Warranty:1 Yr Replacement
    MotoBatt MBTX20U
    • Cold Cranking Amps (CCA):310
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):6.89 x 3.43 x 6.1
    • Capacity Amp Hours:21
    • Warranty:24 Mo (1Yr + 1Yr)
    YTX20L-BS Racing Battery By Braille
    • Cold Cranking Amps (CCA):426
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):6.8 x 3.4 x 6.1
    • Capacity Amp Hours:21
    • Warranty:1 Yr Replacement
    Odyssey PC545MJ

    Odyssey PC545MJ

    $149.95

    • Cold Cranking Amps (CCA):185
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):7.0 x 3.38 x 5.17
    • Capacity Amp Hours:13
    • Warranty:2 Yr Replacement
    Adventure Power UTX20L
    • Cold Cranking Amps (CCA):270
    • Chemistry:AGM - Factory Sealed
    • Dimensions(in):6.89 x 3.43 x 6.1
    • Capacity Amp Hours:18
    • Warranty:1 Yr Replacement
    Noco GB20 Jump Starter
    • Chemistry:Lithium-Ion
    • Dimensions(in):6.6 x 3.2 x 1.7"
    • Capacity Amp Hours:6400 mAh
    • Warranty:1 Year