MADE IN THE USA!
Free Economy ShippingProduct Specifications for EarthX ETX1200 Lithium Battery for Experimental Aircraft & Race Cars
| BM Part #: | LTX1200 |
|---|---|
| Brand: | EarthX |
| Made In: | U.S.A. |
| Voltage: | 13.2 Volt |
| Cold Cranking Amps: | 600 CCA / 1200 PCA |
| Capacity: | 20 Ah |
| Type: | LiFePO4 |
| Length: | 6.5" |
| Width: | 3" |
| Height: | 6.6" |
| Shipping Weight: | 5.60Lbs |
| Warranty: | 2 Year Factory Direct |
| Product Manual: | Download |
| Datasheet: | Download |
| Actual Battery Weight: | 5.6lbs (2.7kg) |
What's in the box:
- 1 x ETX1200
- 2 x 6mm screws
- Foam for proper fitment
- Made in the USA. Why it matters:
- Superior craftsmanship; rigorously tested; high-quality parts.
- Ultra-Lightweight Design: Weighs just 5.6 lbs, saving 11+ pounds over a lead-acid battery.
- High Cranking Power: Delivers 600 CCA and 1200 PCA for fast, reliable engine starts.
- Built-In Battery Management System: Monitors cell voltage and balances charge for safer, longer life.
- LED Fault Indicator: Wires into your panel to flag charging issues before they become problems.
- Engine Manufacturer Approved: Meets Rotax requirements and is trusted by leading aircraft engine builders.
- Made in the USA: Assembled domestically with rigorously tested components for consistent quality.
Product Description
Are you tired of hauling a heavy lead-acid battery around just to get your engine to turn over? The EarthX ETX1200 lithium battery swaps that fifteen-plus pound anchor for a battery that weighs just 5.6 lbs, without giving up any cranking power. Built specifically for experimental aircraft and race cars, this LiFePO4 battery delivers 600 cold cranking amps, 1200 peak cranking amps, and 20 amp hours of reserve capacity, so your engine fires up fast every time.
Why Pilots and Racers Are Making the Switch
Every pound you remove from the nose of your aircraft or the front end of your race car changes how it handles. Builders who switch from a lead-acid battery to the ETX1200 typically shed 11 or more pounds instantly. That's weight you can put toward payload, fuel, or a second battery for true redundancy. Racers see the same benefit: less weight over the front axle means quicker acceleration and sharper handling on track.
Safety Engineering You Can Feel Good About
The ETX1200 is not just light, it is built around a battery management system that constantly checks cell voltage, temperature, and charge balance. Redundant electronics and an external LED fault light let you catch a problem on the ground, long before it becomes a problem in flight. Gen 2 ceramic cell construction adds another layer of short-circuit and overvoltage protection, plus a longer shelf life and steadier performance over time.
Make Sure It's the Right Fit
Before you order, double check your setup against these requirements:
- Built for engines 550cc or larger running a 120-amp alternator or smaller
- Meets Rotax's requirements as an approved lithium battery
- Backed by a 2-year factory warranty and assembled in the USA
Ready to lighten your load and start every time? Order your EarthX ETX1200 today and enjoy free standard shipping across the contiguous 48 states.
Fault Conditions
This table shows the most common fault conditions and possible causes.
| LED Light | Voltage | Possible Cause | Recommended Action |
|---|---|---|---|
| Slow Flashing (5s on / 5s off) | Less than 12.8V | Battery over-discharged (due to faulty charging system) | Charge battery. Once charged, the light will stop flashing. |
| Slow Flashing (5s on / 5s off) | Less than 13.2V | Weak or failing cell | Charge battery. If voltage drops below 13.2V within a few days, discontinue use. |
| Slow Flashing (5s on / 5s off) (>1 hour time period) | 13.2V - 14.6V | Weak or failing cell | Discontinue use. If in flight, this is not an immediate issue unless it is in conjunction with a charging system failure. |
| Slow Flashing (5s on / 5s off) | Greater than 15.2V | Over-charging (due to faulty charging system) | If in flight, shutoff charging system immediately. Aircraft over-voltage protection is required if alternator charging system is greater than 20 amps (i.e. over voltage crowbar circuit) |
| Slow Flashing (5s on / 5s off) | 13.2V - 14.6V | Cell to cell charge levels are not balanced | May come on briefly during periods of high current charging until the cells are automatically balanced. Try charging with a plugin charger, like an Optimate Lithium charger. |
| Solid Light | Any voltage | BMS electronic issue | Discontinue use. If in flight, this is not an immediate issue unless it is in conjunction with a charging system failure. |
| Solid Light that turns off after 3 minutes | Any voltage | Short Circuit protection was activated | Nothing neds to be done. |
| Short Flashing (2s on / 2s off) | Any voltage | High battery temperature (> 65°C / 150°F) | Let battery cool down prior to cranking or charging. |
Frequently Asked Questions
Will the ETX1200 work with my aircraft or race car's electrical system?
A: The ETX1200 is designed for engines 550cc or larger paired with a 120-amp alternator or smaller. If your alternator puts out more than 120 amps, check EarthX's other ETX models before ordering, since an oversized charging system can overwhelm this battery.
Can I charge the ETX1200 with my existing charging system?
A: Yes, as long as your regulator holds a charging voltage between roughly 13.8V and 14.6V. Voltage above that range can prevent the internal BMS from balancing the cells properly, so it's worth confirming your regulator's output before installing.
Can I run the ETX1200 alongside a lead-acid battery?
A: No. Wiring a lithium battery in series or parallel with a lead-acid battery isn't recommended, since the lower voltage of the lead-acid battery will slowly drain the lithium cells. Use the ETX1200 on its own, or pair it with a second lithium battery for backup power.
What does the LED fault light indicate, and do I need to install it?
A: The LED plugs into your EFIS or control panel and flashes in different patterns to flag issues like over-discharge, overcharging, or an unbalanced cell. It's sold separately from the battery, but installing it gives you an early warning before a charging problem grounds you.
What's included in the box, and do I need extra mounting hardware?
A: Each ETX1200 ships with the battery, two 6mm mounting screws, and foam for a snug fit in your existing battery tray. It's built to the same "E" case size as many lead-acid batteries it replaces, so most installations won't require a new tray or box.
Cross Reference & Compatibility
Customer Reviews
Saved over 35pds in a car that only weighs 2,400. Front end feels lighter, purchased the lightweight battery hold from Goodwin racing. Very happy.
Purchased this after to go in experimental aircraft. It starts better than it ever has in 10 years of flying. Highly recommend it.
