VMAX AGM Deep Cycle Battery 120 Amp Hour MR137-120

Description

Never Used
New in Box
Good for marine, auto and golf cart.
12 Volt 120Ah Group 31 High Performance Marine AGM Deep Cycle Battery
Reserve Capacity: 230min ; Dimensions: 12.9"Lx6.8"Wx8.7"H (Height includes terminals) Weight: 75lb; 8mm terminals
Maintenance Free Operation: There is no need to check specific gravity of the electrolyte or add water to VMAXTANKS. Can be mounted in any position
Rechargeable Sealed battery resists shocks and vibration. High performance AGM technology for long lasting reliable power
Factory Warranty: 1 Year replacement
What is an AGM Battery?
At its core, an AGM is still a type of lead-acid battery. AGM is standing for absorbent glass mat, which refers to the technology those devices use to create power. The fiberglass mat is installed between the positive and negative lead plates of the battery. As its name suggests, it absorbs the glass mat and holds the battery acid. In this way, it can flow around the battery orderly.
The AGM battery is also referred to as SLA (Sealed Lead Acid) or VRLA (Valve Regulated Lead Acid) batteries. The technology used to make them newer, having first come up in the mid-1980s.
Deep Cycle and AGM Battery Introduction
Deep cycle batteries are divided into lead-acid batteries and lithium iron phosphate batteries and they are known as the marathon runners of the battery world. Rather than providing a short burst of lots of power, they supply a lesser amount of power for long periods of time. Deep cycle batteries are common among people who own RVs or Boats and are also seen used with golf carts and solar panel systems. Absorbed glass-mat (AGM) batteries are a lead-acid type with a similar approach to the deep cycle battery's working mechanism. AGM battery is designed for two jobs: sending powerful bursts of starting amps and running electronics for a long time.
Since the AGM battery can be considered as a type of deep cycle battery in many cases, there aren’t many differences between the two but some slight key distinctions as listed below.
Discharge Capacity
The capacity for an AGM battery differs case by case since not all of them handle deep discharge in the same way. Both AGM and deep cycle batteries handle spillage issues well. Typically, a deep cycle battery has a thick plate for deeper discharge purposes which also helps in preventing damage.
Discharge Rates
A deep cycle battery has a lower discharge rate overall, especially for lithium-ion and Gel types.
You can check your battery's discharge rate on the specs sheet that comes with it for specific information.
Deep Cycle Battery Overview
A deep cycle battery is primarily meant for nearly complete discharge on a regular basis, without the extent of suffering damage, unlike traditional batteries. It uses the same form as a car battery but delivers greater currents over a longer period of time.
What is the Difference Between an AGM and Flooded Lead-Acid Battery?
This absorbent glass mat design is the primary difference between AGM and flooded lead-acid batteries. The traditional lead-acid battery simply uses lead plates suspended in the electrolyte solution while the liquid flows freely around them.
As mentioned earlier, AGM batteries are still lead-acid batteries, just in a different design. This battery still suffers many of the same problems that traditional flooded lead battery have but do offer a few benefits.
What Are AGM Batteries Used For?
AGM battery is best used in starting applications. You will most commonly find them in vehicles like cars, trucks, RVs, boats, and other motorized vehicles. The AGM battery provides intense bursts of power as a starting battery.  While they can be used for energy storage applications, their cost and poor performance make them a less than ideal choice for these applications.
Benefits of AGM Battery and Flooded Lead-Acid Battery
So why would someone consider an AGM battery instead of the flooded lead-acid versions you have likely been using for years or decades?
Less Maintenance Than Flooded Lead-Acid
You have to open up flooded lead-acid batteries to make top off their fluids periodically to maintain the correct balance of electrolytes and water. Without this necessary maintenance, your battery won’t operate as efficiently as possible and eventually become damaged. There is no similar requirement for AGM batteries, as they are sealed by design. This means they are virtually maintenance-free.
AGM batteries can install non-vented
You are able to install an AGM battery in a non-vented way. You have to vent traditional batteries from time to time, as they release gases as part of their normal operation. These can be building up with corrosive or even potentially explosive consequences without proper ventilation. This lack of venting requirements means more flexibility in installation.