Learn More About The Lifeline GPL-8DL

Introduction to the GPL-8DL

Tempted to pick up the Lifeline GPL-8DL, but still unsure as to whether this battery is the right one for you? Hopefully, the information that you find in this post is going to give you a nudge in the right direction.

Technical Specification GPL-8DL

  • Enclosure: ABS Plastic
  • Weight: 156 lb
  • DC Output Voltage: 12V
  • Amp/Hr: 255 at 20 hour rate.
  • Dimensions: 20.76 x 10.89 x 8.64 inches.


  • Deep cycle battery. This means that you will be able to fully discharge the battery before you charge it back up again. This is important in marine and RV applications as you may not have facilities in place where you will be able to continually give the battery a ‘top up’ charge.
  • AGM technology. This brings a variety of benefits to the table. Perhaps the biggest is that this battery is able to cope with extreme situations. For example; this battery can withstand a lot of vibration. It is not going to falter. In addition to this, it is able to cope with extreme fluctuations in temperature. No matter what happens, you can be sure that this battery has your back.
  • Float and cycle use
  • Maintenance free: sure, it is always great to check your batteries periodically. This will ensure that they continue to perform at the standard that you expect. However, it is not expected. There is no electrolyte or water inside to ‘top up’. The terminals are not going to corrode. Just make sure you treat your battery well and you will be able to rely on it for years to come.
  • This battery is completely leak and spill proof. This is one of the reasons as to why it is able to cope with such a high amount of vibration.
  • This is a sealed unit. This means that you do not have to worry about anything getting inside the battery which could compromise its integrity. The fact that it is a sealed unit also means that you will be able to mount it in a variety of different positions. This is great. Most people will be using it in a marine environment where you will have a lower amount of space available, so it is great to know that you can put it in a variety of different positions.

Rated for Marine Use

The harshness of marine environments means that it is very rare that you will find a battery which has been rated for use in them. This one has. In fact, it comes with a decent warranty for marine use. If that was not enough, the US Coast Guard regularly uses these batteries. If they can rely on them, we are sure you can.

If you are still unsure as to whether you want the Lifeline GPL-8DL, then call the team here at SEP. They will happy to provide you with further advice. If you are positive this battery is right for you, just hop on over to the SEP website!

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