Deep Cycle Batteries : Marine Batteries | RV Batteries | AGM Batteries

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BD Batteries - Buffalo, New York & Denver, Colorado
Buffalo Phone: 716.531.4875
Denver Phone: 303.800.4725

Lifeline Batteries, Total Power Batteries, Rock Racing Battery Line, Optima Battery Lines & Sun Xtender Batteries

Lifeline Battery Frequently Asked Questions:

  1. What does AGM stand for?
    It stands for Absorbed Glass Mat, the type of separator used in all Lifeline® AGM batteries.
  2. What is the difference between AGM batteries and Gel batteries?
    Both AGM and Gel batteries utilize oxygen recombination and pressure relief valves to minimize water loss and allow maintenance-free operation. That is where the similarities end. AGM batteries have the advantage of being mountable in any orientation without capacity loss, have lower internal impedance to support high load currents, and have better capacity at low temperatures. Gel batteries must be mounted upright to prevent air pockets from forming that will burn out the plates. They have inferior performance at high discharge rates and low temperatures.
  3. Why should I choose Lifeline® AGM batteries?
    Concorde has been supplying Lifeline® AGM batteries to the marine and recreational vehicle marketplace for over 20 years, providing excellent performance, reliability and life. With this long history and wide variety of successful applications, prospective customers are assured that Lifeline® AGM batteries have proven themselves over and over again.
  4. What depth of discharge should be used when sizing a battery?
    To get the best cycle life, the average depth of discharge should be as low as possible. Concorde recommends the average depth of discharge be no greater than 50% of the battery’s 20 hour rating.
  5. What is the maximum number of batteries that can be connected in parallel?
    In general, the number of batteries in parallel should be limited to four (4). It may be difficult to keep the batteries in balance beyond this number, unless a special charging system is employed.
  6. Can Lifeline® AGM batteries be installed in sealed containers?
    NO! Do not install Lifeline® AGM batteries in a sealed box or enclosure. During charging, hydrogen gas can be released and must be ventilated to prevent the possibility of ignition and/or explosion.
  7. What is the best way to charge my battery?
    Charge with a 3 stage charger that compensates the voltage setting as the battery temperature changes. Click here for Lifeline battery charging procedures and information.
  8. What is the best charge voltage setting for outdoor applications if temperature sensing is not available?
    NONE! Charging voltage varies widely depending on the battery’s temperature and there is no single voltage that will work over a wide temperature range. Batteries will fail prematurely if this is attempted. How can I tell if my battery is fully charged? For a battery at room temperature, it can be considered fully charged when the charging current falls below 0.5A per 100Ah of rated capacity. The open circuit voltage (after at least 4 hours of rest) will be 2.17 volts per cell or higher (13.0 volts for a 12-volt battery), regardless of the battery temperature.
  9. How do I know when it is time to replace my battery?
    Perform a full capacity test on your batteries. Short duration load tests and impedance/conductance measurements are not reliable to determine the actual capacity of a battery.

AGM Batteries Available

All Available AGM Batteries
Battery Comparison Table - AH & Capacity
Battery Comparison Table - Size Weight

Lifeline Battery Dealer
Lifeline Deep Cycle AGM Battery Specifications
Lifeline Deep Cycle AGM Batteries by Size
Lifeline OEM - RV & Marine List
Lifeline AGM Battery Features
Lifeline AGM Battery SOC, OCV, and DOD Info
Lifeline AGM Battery Performance Graphs
Lifeline AGM Battery Charging Procedures
Lifeline AGM Batteries History
Lifeline AGM Batteries FAQ
Lifeline AGM Battery Safety
Battery, Inverter, and Generator Failover Calculator
AC - DC Lifeline AGM Battery Bank Sizing Calculator
DC - DC Lifeline AGM Battery Bank Sizing Calculator
DC Reserve Minutes Calculator
AGM Battery Users Manual Part 1 (1 of 2)
AGM Battery Users Manual Part 2 (2 of 2)
Sun Xtender Battery Dealer
Sun Xtender Deep Cycle AGM Battery Specifications
Sun Xtender Deep Cycle AGM Batteries by Size
Sun Xtender AGM Battery Features
3rd Party Sun Xtender AGM Battery Test Results
SunXtender AGM Battery Charging Procedures
Sun Xtender AGM Batteries History
Sun Xtender Battery Service Instructions
Sun Xtender Technical Documentation
AC - DC Sun Xtender AGM Battery Bank Sizing Calculator
DC - DC Sun Xtender AGM Battery Bank Sizing Calculator
Optima Battery Dealer
Optima Battery Features
Optima Red Top Battery Specifications
Optima Red Top Batteries by Size
Optima Blue Top Battery Specifications
Optima Blue Top Batteries by Size
Optima Yellow Top Battery Specifications
Optima Yellow Top Batteries by Size


Chairman Traction, Standby, and Wheelchair Batteries.
Chairman Traction / Standby / Wheelchair Batteries
Battery Chemistry Comparison - VRLA vs GEL vs AGM
Comparison Between Gel Batteries and AGM Batteries

Total Power Racing Battery Dealer
Total Power Racing Battery Features
Total Power AGM Racing Battery Specifications
Total Power Racing Lightweight Batteries by Size
Battery Chemistry Comparison - VRLA vs GEL vs AGM
Comparison Between Gel Batteries and AGM Batteries


Rock Racing Battery Dealer
Rock Racing Battery Features
Rock AGM Racing Battery Specifications
Total Power Racing Lightweight Batteries by Size
Battery Chemistry Comparison - VRLA vs GEL vs AGM
Comparison Between Gel Batteries and AGM Batteries


Shipping, Safety, and Legal

Lifeline, SunXtender, Total Power, and Rock Racing Battery Material Safety Data Sheet - MSDS (pdf)
Lifeline, SunXtender, Total Power, and Rock Racing Battery Safety Bulletin
Lifeline, SunXtender, Total Power, and Rock Racing Battery Transportation Information DOT

AGM Battery Applications and Benefits

AGM Battery Efficiency and Peukert Coefficients
Custom Uninterruptable Power Supply - Custom UPS
Uninterruptable Power Supply Kits - UPS Kits
Solar Powered Off Grid Housing

AGM Battery Installation Considerations

Hydrogen Venting Systems

BD Batteries - A Broomfield-Designers Company
Serving the Local Colorado Community 9-5 Mountain & Emergencies P. 303-800-4725 F. 303-600-9726
Serving the Buffalo and the Great Lakes Communities 9-5 Eastern & Emergencies P. 716-531-4875
Mailing Address: 5023 West 120th Ave. #138, Broomfield, CO 80020
OUR DENVER WAREHOUSE IS MOVING TO A NEW LOCATION AT THIS TIME.
WE WERE SCHEDULED TO REOPEN OUR BRICK AND MORTAR BATTERY WAREHOUSE
IN EARLY 2011. IN THE MEAN TIME OUR WEBSITE AND PHONES OPERATE FINE!

We do thank the public for the outreach of concern, and votes of confidence.
Do call Lorene prior to schedule used battery pickups, new battery dropoffs, etc. by appointment.

Corporate Accounts, Vendors, Installers, Electricians, and others interested in setting up an account.



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Buffalo, New York
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716-531-4875
303-800-4725

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Official Battery Distributor for:
Lifeline Battery, Sun Xtender Battery, Total Power Battery, and Rock Racing Batteries.

AGM Batteries, AGM Battery Chargers, Deep Cycle Batteries, DC Fuses, DC Firewall Pass Throughs, Battery Terminals, Battery Cables, DC Diodes, and Special Order Flooded Crown Batteries!

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The information contain on this deep cycle AGM batteries website is deemed reliable, but not guaranteed. Please verify specific information on marine AGM batteries, rv AGM batteries or auto AGM batteries listed here by calling us direct. We are proud to offer the highest quality AGM batteries and hope you will consider using our deep cycle AGM batteries in the near future!