LifelineMarine Batteries

Premium Deep Cycle AGM Technology

Manufactured entirely by hand, from start to finish and built to Military Specifications. As a family owned and operated US manufacturing facility, we take pride in all of our products. Our quality materials and craftsmanship put us on top in the AGM battery market.  Lifeline® is a powerful name in the battery industry with world class performance and customer service.

Benefits

Our Products

  • 12 Volt
  • 6 Volt
  • 2 Volt
  • Starting Batteries
  • All
Lifeline Battery Part No.VoltsRated Cap.20 Hour RateMinutes of Discharge25 Amps
GPL-U1TGPL-U1TEnlarge Product Image12v3350Details
GPL-8DLGPL-8DLEnlarge Product Image12v255550Details
GPL-8DAGPL-8DAEnlarge Product Image12v255550Details
GPL-4DL_R_HRGPL-4DLEnlarge Product Image12v210390Details
GPL-4DA_R_HRGPL-4DAEnlarge Product Image12v210390Details
GPL-31XTGPL-31XTEnlarge Product Image12v125230Details
GPL-31TGPL-31TEnlarge Product Image12v105195Details
GPL-30HTGPL-30HTEnlarge Product Image12v150315Details
GPL-27TGPL-27TEnlarge Product Image12v100186Details
GPL-24TGPL-24TEnlarge Product Image12v80149Details
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GPL-1400T_R_HRGPL-1400T
12v

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GPL-3100T_R_startingGPL-3100T
12v

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GPL-2700T_R_startingGPL-2700T
12v

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GPL-2400T_R_startingGPL-2400T
12v

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GPL-L16-2VGPL-L16T-2V
2v

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GPL-6CT-2VGPL-6CT-2V
2v

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GPL-4CT_R_HRGPL-4CT-2V
2v

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GPL-31T-2VGPL-31T-2V
2v

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GPL-L16TGPL-L16T
6v

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GPL-6CTGPL-6CT
6v

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GPL-4CT_R_HRGPL-4CT
6v

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GPL-U1TGPL-U1T
12v

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GPL-8DLGPL-8DL
12v

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GPL-8DAGPL-8DA
12v

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GPL-4DL_R_HRGPL-4DL
12v

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GPL-4DA_R_HRGPL-4DA
12v

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GPL-31XTGPL-31XT
12v

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GPL-31TGPL-31T
12v

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GPL-30HTGPL-30HT
12v

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GPL-27TGPL-27T
12v

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GPL-24TGPL-24T
12v

Details

Marine Batteries

Marine/ Yachting Battery Selection Guidelines and Info

Batteries are one of the most important components onboard your yacht and are the heart of most electrical systems.  A basic understanding of how batteries interact with electronic equipment can help you avoid being stranded or adrift when it counts the most.  Marine batteries perform two important tasks on your vessel, cranking engines and powering electronics.  In today’s maritime vessel, the standard DC requirements are at an all-time high and are used to power significant loads such as multiple TV’s, high powered acoustic systems, residential refrigerators and a host of electronic gadgets, just to name a few.  As you weigh the importance and power consumption requirements of these and other DC powered components, you should be sure to build a battery bank capable of carrying the loads.

Deep Cycle Marine Battery

Understanding Battery Amp/Hr Ratings

In the marine industry almost all battery manufacturers provide amp/hr ratings at the 20hr rate.  What this means is that through the course of a 20hr period batteries can deliver a cumulative number of amps down to stone dead.  For example; a battery rated for 200amp/hrs at the 20hr rate can deliver a total of 200amps through the 20hr period (or 10amps per hour for 20 hours).

Three Main Considerations for Sizing a Battery Bank

A full assessment should be done to calculate the power demands of the DC powered electronics you will use onboard your vessel.  It is wise to build a battery bank to be roughly twice the capacity that you require so you are able to optimize your number of battery life-cycles.  There are many online websites that provide DC amp consumption by appliance or refer to the panel on the actual appliance or electronic device and/ or owners-manual.  Next you will have to measure the space available for batteries.  Sometimes you can gain reserve capacity by using six volt batteries, but other times it is more efficient to use twelve volt batteries.  Finally, you will need to select a charger (s) that can satisfy your particular size battery bank most effectively.  If you will be using solar panels to recharge your battery bank you will need to size them properly and use a controller to regulate voltage for the best results.  If you are going to rely heavily on your alternator, you will need to insure the voltage is also regulated.  Once you have selected a battery charger (s) you will need to know the basics of how to best manipulate the device to suit your batteries.  You may choose to have a battery charging device with the capabilities of charging multiple battery banks and different battery technologies.  You may also have several different battery chargers to charge different banks that power devices such as bow thrusters and electric winches.

Boat Battery

Caring for and Storage of Your Batteries

You should first determine the accurate ‘open circuit’ voltage of the battery bank.  This can be done by removing one of the main leads to the battery bank and making sure there are no additional hot wire taps that may have a load on the batteries.  If the batteries are fresh off a charge, they will need to sit for at least an hour to let surface voltages dissipate.  A fully charged healthy young Lifeline battery will show a voltage of 12.85 or higher.