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ETX 6 A Lithium Battery replaces: 12N5-3B, 6N4-2A, 6YB8L-B, EarthX, lithium battery, YB4L-B, YTX4L-BS, YTZ5S, Yuasa.


Price: $129.00

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Product Description

( free shipping to any USA address)

Our ETX Lithium batteries, Lithium Iron Phosphate (LiFePO4), are designed to be a light-weight, maintenance free replacement of your standard lead-acid battery.  Our batteries will work with any vehicle charging system and “modern” lead-acid battery chargers, thanks to our exclusive built-in electronics (Battery Management System, BMS). 

No other motorsport lithium battery manufacturer offers a battery with built-in electronics to protect it from over-discharging, over-charging, plus keep the cell’s charge level balanced.

Our batteries are an exceptional value given the fact they can last four times longer than a lead-acid battery, up to 8 years.  All of our motorsport batteries come with a full 2 year warranty (not prorated like others).  If you are not 100% satisfied with our product, you may return it for a refund (see our Shipping and Returns policy).

We engineer and assemble all our batteries in the U.S.A.

*Some small cc dirt bikes / ATVs (like a CRF250X) require a 5mm battery terminal screw.   Our terminal adapter kit which includes a 5mm screw (sold separately) can be used for such installations.

Replaces Yuasa: YTX4L-BS, YB4L-B, YTZ5S, 6YB8L-B


(see manual for complete specification)

Voltage: 12 V
EqAh (lead-acid equivalent): 6
Pulse Crank Amps (PCA): 140A
Cold Crank Amps (CCA): 80A
Recommended Charge Amps: 1-2A
Max Charge Amps: 12A
Weight: .9 lb (.4Kg)
Dimensions: 4.5in (L) x  2.6in (W) x 3.7in (H)113mm(L)x66mm(W)x95mm(H)
Environmental (water resistance): IP 66 (water wash down)
Terminal Polarity: Universal



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