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Shorai LFX21A6-BS12

Offers the highest levels of stored charge and cranking power. Popular with BMW bike riders, we also recommend this battery for high displacement street and adventure bikes exceeding 1000cc, or just large capacity bikes which sit around unused for a really long time in-between startups. If unsure contact us for a specific product recommendation for your bike/usage pattern. Expect weight savings of exceeding 5kg over your OEM lead-acid battery.

The Shorai LFX21A6-BS12 is completely identical to the LFX21L6-BS12 except the location of the positive and negative terminals of the batteries are inverted.  The Specifications tab will show this difference in greater detail diagrammatically.

Shorai Batteries require a charging system output of 13.1 Volts or higher at idle, and must not exceed 15.2 volts at maximum output.

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SHORAI LFX Lithium-Iron Powersports battery, 21Ah PbEq 12V eq
Length 148mm
Width 83mm
Height 140mm

"A" polarity, Case Type 6

Label Data
Weight (grams): 1374
Cranking CCA (A): 315
Weight (lbs.): 3.03
Terminal Polarity: