Lifeline Batteries - AGM RV Batteries - AGM Marine Batteries - AGM Racing Batteries



Congratulations on the purchase of a new Lifeline battery! Lifeline has been the leading name in AGM (Absorbed Glass Mat) batteries since 1993. The quality and durability of the Lifeline battery series has been proven again and again in military and commercial applications worldwide.
The AGM difference:
  • 20% faster recharge than a conventional vented battery and gel cells.
  • 100% maintenance free. No addition of water needed.
  • Classified as “NONSPILLABLE”
  • Tested to stringent military shock and vibration standards.
  • Designed to reduce outgas under normal charging conditions.

  • Sizing a battery bank:

    It is always good to have twice the battery capacity that an application requires. This will promote long battery life and also reduce the amount of recharge time.

    Battery Charging:

    WARNING: All batteries must be adequately vented during charging to avoid accumulation of explosive hydrogen gasses. Never install or charge in a sealed container or room.

    The following charging voltages are recommended for maximum battery life for all Lifeline models.

    Charging Phase2 Volt Battery 6 Volt Battery 12 Volt Battery
    Bulk/Absorb 2.37v - 2.40v 7.10v - 7.20v14.2v - 14.4v
    Float 2.20v - 2.23v 6.60v - 6.70v 13.20v - 13.40v
    1. Use midpoint values for most applications. Lower voltages may be suitable for light-duty applications and higher voltages may be suitable for heavy duty applications.
    2. For 24 Volt Systems, multiply 12 Volt setting by 2.
    3. Charge voltage should be adjusted if battery temperature varies by more than 10°F from 77°F. Consult website for further guidance (

    Conditioning/Equalizing Charge: 15.5 volts for 8 hours
    Conditioning/equalizing should only be done when the battery is showing symptoms of capacity loss. If conditioning/equalizing is necessary, first go through the normal charge cycle. Once the battery is as fully charged as possible, start the conditioning/equalizing charge.

    For maximum battery life, a battery must be recharged to 100% capacity. Recharging to less than 100% may result in premature battery failure. Lifeline batteries are not covered under warranty if they are not recharged properly. For more information, please refer to our warranty policy.

    For Inverter/Charger applications:

    Refer to the Inverter/Charger manual to ensure the correct voltages have been set.

    Knowing when to recharge:

    For maximum battery life in cycling applications, do not discharge the battery bank below 50%. Discharging the bank repeatedly to 100% will shorten the battery life. The open circuit voltages listed below correspond to the various states of charge:

    State of Charge 2 Volt Battery 6 VoltBattery 12 VoltBattery
    100% 2.16V or more 6.50V or more 12.8V or more
    75% 2.08V 6.25V 12.5V
    50% 2.03V 6.10V 12.2V
    25% 1.98V 5.95V 11.9V
    0% 1.93V or less 5.8V or less 11.6V or less

    Multiple Batteries:

    If there is more than one battery in the battery bank, the following guidelines should be used:
  • Always use batteries of identical make, model and with the same manufacturing date.
  • Make sure the battery cable is not undersized for the battery system.
  • Make sure the battery cables are connected to the terminals correctly. If unsure, professional assistance is recommended.

  • Storage:

    The following recommendations may be helpful if the battery is to be stored:
  • When storing the battery, it is not necessary to leave it on charge. Disconnect the negative battery cable. This will prevent inadvertent discharging of the battery that may lead to a complete discharge.
  • Fully charge the battery before putting it in storage and store in a cool place.
  • Boost charge the battery every 3 months to ensure maximum battery life.

  • Warranty:

    Lifeline batteries have a 5-year pro-rated warranty with a 1-year free replacement (12-month prorated warranty in applications other than marine or RV). The warranty period starts at the time of purchase. If the original receipt is lost, the warranty will be based on the battery date code. The warranty covers defects in material, workmanship and failure, except where such failure is due to abuse, neglect or breakage. The warranty does not cover consequential damage or injury, discharged batteries, rental, freight or installation costs. Replacement batteries will be provided at the time the warranty is requested. Credit will not be issued after the purchase of a new battery. For warranty questions, please contact Lifeline Inc at (800) 527-3224. Rev 12/08
    RV Battery Main
    Deep Cycle RV Battery Specifications
    Starting RV Battery Specifications
    RV Battery Sizing Calculator DC-DC
    RV Battery Sizing Calculator AC-DC
    RV Battery Distributors
    RV Battery Manual
    RV Battery Short Circuit and Internal Resistance Specifications

    Material Safety Data Sheet

    Marine Battery Information:

    Marine Battery Introduction
    Deep Cycle Marine Battery Specifications
    Marine Starting Battery Specifications
    Marine Battery Sizing Calculator DC-DC
    Marine Battery Sizing Calculator AC-DC
    Marine Battery Distributors
    Marine Battery Manual
    Marine Battery Short Circuit and Internal Resistance Specifications

    Material Safety Data Sheet
    marine batteries

    NOTICE: The technical battery data contained herein has been reviewed and approved for general release on the basis that it contains no export controlled information. No part of this site may be copied or reproduced by any means, including electronic or mechanical, without written permission from Concorde Battery Corporation and Lifeline Batteries.

    DISCLAIMER: The technical data contained herein is based upon the best information available as of the latest revision date. Concorde Battery Corporation the Manufacturer of Lifeline Batteries, makes no warranty of merchantability, fitness for any particular purpose, or any other warranty, expressed or implied, with respect to such information. Both Concorde Battery and Lifeline Battery assume no liability resulting from its use. It is the obligation of each user of the product to determine the suitability for any particular application, including marine battery and RV battery installation procedures, to comply with the requirements of all applicable laws regarding use and disposal of this product.

    ISO9001:2000 + AS9100B(pdf) - Battery Technical Manual (pdf) - Battery Transportation Info - MSDS
    Technical Bulletin - Acid Volume - Home Page - Site Map - Aircraft Batteries - Solar Batteries
    - Racing Batteries - AGM Battery Directory
    Business Hours - Upcoming Events / Trade Shows - Contact Us
    UL Listing on all Lifeline RV and Lifeline Marine Batteries
    Lifeline Batteries are UL listed.
    The Best Batteries You Can Acquire!

    USCG Approved, UL Listed, Navy Mil-Spec, and CE approved.

    Lifeline Batteries Inc;
    New Address:
    292 E Arrow Highway, San Dimas, CA 91773
    P: 909-599-7816 | F: 909-599-0596
    Lifeline RV Batteries and Marine Batteries are hand made with pride in the United States.

    All Rights Reserved. © 1996-2015 Lifeline Deep Cycle Marine Batteries and Broomfield Designers. Website & Database by