sales@earthxbatteries.com :: USA Toll Free 844.220.6230 :: 970.674.8884 :: 8-5 M-F Mountain Time ::

EarthX Lithium Batteries – OEM LIthium  Batteries for All Motor Sports
What Type of Vehicle Do You Need a Battery For?
Certified Aircraft
Experimental Aircraft
Motorcycles
ATV Vehicles
Race Cars
UTV / Side-by-Side Utility Vehicles
Snowmobiles
Custom Battery Application
  • About EarthX
    • EarthX Lithium Batteries
    • Lithium Battery Technology
    • Other Interesting Facts
  • Products
    • By Vehicle Type
      • ATV Vehicles
      • Experimental Aircraft
      • Motorcycle
      • Race Cars
      • Moped Vespa Scooters
      • Snowmobile
    • Accessories
      • Cables
      • Cases
      • Chargers
      • Jump Pack
      • LED Lights
      • Terminal Adapters
      • Vent
    • List of EarthX Lithium Batteries
  • Battery Charging
  • Authorized Resellers
  • News
  • Documentation / FAQs
    • Our Brochure
    • Fact Sheets
      • Engine Charging Systems
      • SLA vs Lithium
      • Series Parallel Operation
      • Dual Bus Lithium Battery Design
      • DO-311 Index of Tests
      • Heat in the Engine Compartment
      • Lithium Battery Start of Season Guidelines
    • FAQs
    • Manuals
      • ETX Battery Manual (PDF)
      • Jump Pack Manual (PDF)
      • ETX Battery Box Installation Guide
    • Service Bulletins
      • Applies to ETX900-TSO
    • MSDS
    • Magazine Articles
    • Video Library
  • Customer Service
    • Warranty Submission
    • Shipping & Returns
    • Testimonials
  • Contact
    • Sponsorship Programs
    • Dealer Application
    • Dealer Resources
Back to top

Home Page | Documents | Lithium Battery Start of Season Guidelines

Lithium Battery Start of Season Guidelines

Basics

Whether you are preparing your vehicle after seasonal storage or simply keeping your vehicle in tip top shape, your battery is a critical part of your charging and starting system and needs attention. At a minimum the battery should be inspected, connections checked and battery charged full.

Maintenance Actions

  1. Visually inspect the battery for signs of damage; plastic case is cracked, warped or swollen. If the battery is damaged, do not attempt to charge or start your vehicle. The battery needs to be replaced.
  2. Verify battery terminals are clean and terminal screws are properly secured (torque to specification [35in-lbs] per the installation & maintenance manual).
  3. Measure the voltage at the terminals.

• If at or above 13.28V- nothing needs to be done.

• If below 13.28V but greater than 10.5V, the battery needs to be charged prior to engine start attempt with an appropriate charger as starting any engine with a depleted battery is very stressful to a battery and can damage it or shorten its service life. Jump starting your battery in this situation should not be done as this is also very stressful to a battery and can damage it. Use a plug-in charger to safely and slowly bring the voltage back up to the appropriate level. Here is a link with details about charging the battery: https://earthxbatteries.com/our-batteries/battery-charging

• If below 10.5V, it is possible the battery (or cell) is damaged. Only use the EarthX approved Optimate charger to slowly recharge the battery from this over-discharged state. Do not force the battery to accept a charge as it can be dangerous and result in cell rupture, release of flammable vapors, smoke and or fire.

  1. After fully charging the battery with an appropriate charger the voltage should be greater than 13.9V (if measured at end of charge cycle). Within two days the voltage may drop but still be 13.5V or more. And even a week later it should still be greater than 13.3V. If the battery is below these thresholds, the battery is not “holding a charge” and should be replaced.

Even with proper care and maintenance, all batteries will lose cranking amps and capacity over time. The cranking power (amps) can be judged by how fast it spins the engine, but the capacity requires a dedicated test.

Capacity Test

The most accurate way to determine the service life of your battery is to verify the battery capacity. Annually measure the batteries capacity and compare this to original capacity. Once the capacity is less than 80%, it is time to replace the battery. A battery with greater than 80% of its original “rated” capacity is consider fit for continued service. Example, the original battery capacity is 16Ah. Once the battery measures 80% of this capacity (16Ah * .8 = 12.8AH) it is time to replace it. (general rule of thumb).

There are two test methods that can be used to measure the capacity of your battery. The first method given below only requires your vehicle, a timer and a volt-meter.

Test Method #1 (with timer and voltmeter):

a. Fully charge the battery with an appropriate charger.

b. Turn on all electrical loads and start a timer. The same load must be used in subsequent years for accuracy.

c. Record the time to drain the battery to 12.5V.

d. Calculate the time difference from original time to 12.5V to annually measured time to 12.5V.

e. Plug information into this formula:

100 –((Original time – Annual time/ original time) *100 )= % of capacity remaining

Example: original time = 90 minutes, annual time is 80 minutes.
100 – ((90–80/90)*100) = 88.89%
Greater than 80%= good battery
Less than 80%= time to replace

f. Fully charge the battery with an appropriate charger.

Test Method #2 (with timer and DC current meter):

a. Fully charge the battery with an appropriate charger.

b. Turn on all electrical loads and start a timer. The same load must be used in subsequent years for accuracy.

c. Measure and record the battery’s discharge amps using a DC clamp-on current meter at the positive terminal of the battery.

d. Using the measured amps in the previous step and the battery’s nameplate rated capacity (in Ah), calculate the time to discharge the battery to 80%.

Time to Discharge 80% (Hours)=Rated Capacity in Ah * .8Measured Discharge Amps

For Example (16 Ah Rated Capacity, 5 amp measured discharge rate)

Time to Discharge 80%=16 Ah * .85= 2.56 hours

e. Terminate the test after the number of hours calculated in the previous step has expired or if the battery is over-discharged (shuts off discharge current). If the battery is still supplying power at the termination of the test, then the battery’s capacity is greater than 80%. If the battery’s capacity is greater than 80% of it rated or capable of supporting the aircraft’s emergency load for the required amount of time, then the battery has passed the test.

f. Fully charge the battery with an appropriate charger.

References

Source1: EarthX ETX Lithium Battery User’s Manual
Application Note AN-2003 – Rev A

Categories: Documents

Comments:  0

Share it  

Cart

Search by Make/Model

  • This field is for validation purposes and should be left unchanged.

Click here for Maintenance & Instructions for Continued Airworthiness manual

Click here for Install and Maintenance Manual ETX900-TSO

Download/View Our Manual

View Our Accessories

Information

  • Manual
  • Warranty Submission

© 2013 - 2020 EarthX Batteries . All Rights Reserved. | Privacy Policy | Terms & Conditions
Hosted and designed by anARTIST unleashed

EarthX, Inc., 955 Merchant Ct., Windsor, CO 80550
sales@earthxbatteries.com • USA Toll Free 844.220.6230 • 970.674.8884

Use discount code CJP10 to get $10 off a Charger when purchased with an EarthX Battery. Dismiss