Ignitions and Electrical Charging Systems

EarthX

LiFePO4 Starter Battery

$473.75

SKU: ETX680C

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The EarthX ETX680C is a Lithium Iron Phosphate (LiFePO4) starter battery designed for experimental aircraft and race cars. It has a voltage of 13.2V, 320 Cold Cranking Amps (CCA), and 680 Peak Cranking Amps (PCA).
Show original supplier description
The EarthX ETX680C is a Lithium Iron Phosphate (LiFePO4) starter battery engineered for specific applications, including experimental aircraft and race cars. It is suitable for engines up to 400ci with alternators/generators up to 60 amps. This battery features a robust Battery Management System (BMS) that protects its cells from over-discharge, over-charge, short circuits, and temperature extremes, while also ensuring cell balancing for equal charge levels. The ETX-Hundred Series, including this model, incorporates redundant electronic circuits and a battery fault indicator that can be connected to an EFIS or a 12-volt LED light to monitor the battery's state of charge and health. The ETX680C distinguishes itself from the ETX680 model by its more compact physical dimensions, indicated by the 'C' designation. It weighs only 3.9 lbs, offering significant weight savings compared to traditional lead-acid batteries. Users can expect increased cranking power, with the ETX680C providing 320 CCA and 680 PCA, a substantial upgrade from batteries like the PC680 which offers 170 CCA and 520 PCA. Included with the ETX680C are two 6mm screws and foam for proper fitment. An LED fault light is available separately. EarthX is a US-based company focused on continuous improvement in battery technology.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandEarthX
Part NumberETX680C
CategoryIgnitions and Electrical

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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