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MASTERVOLT
SlimLine Compressed AGM Batteries

Mastervolt batteries utilize AGM (Absorbed Glass Mat) separators and VRLA (valve-regulated lead acid) technology to provide maintenance-free, completely sealed battery power. Great for starting, service and deep-cycle applications, without leaks, spills and the hazards of gassing with unsealed batteries. Special one-way valves prevent pressure buildup if they're overcharged. Can be installed in any orientation, and more compact than traditional batteries, Mastervolt AGM Batteries are built to withstand shock and vibration encountered in the marine environment. Excellent high-current-discharge behavior, accepts higher charging currents, and multiple batteries are easily linkable.

SlimLine Compressed AGM Batteries have such a small footprint that two of the SlimLine batteries can fit in the space of one conventional 8D battery. Up to 30% volume savings, and up to 15% weight savings. Threaded M6 insert terminals. Two year warranty.

Product Models
Description WM Model # MFG Part # Availability Price Quantity  
SlimLine Compressed AGM 12/150 Battery, 150Ah, 700A CCA, 22.0"L x 4.3"W x 11.0"H, 89lb. 10976447 63001500
In stock online.

$549.99

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SlimLine Compressed AGM 12/185 Battery, 200Ah, 900A CCA, 22.0"L x 5"W x 11.0"H, 119lb. 10976454 63001851
In stock online.

$689.99

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Product Description

Mastervolt batteries utilize AGM (Absorbed Glass Mat) separators and VRLA (valve-regulated lead acid) technology to provide maintenance-free, completely sealed battery power. Great for starting, service and deep-cycle applications, without leaks, spills and the hazards of gassing with unsealed batteries. Special one-way valves prevent pressure buildup if they're overcharged. Can be installed in any orientation, and more compact than traditional batteries, Mastervolt AGM Batteries are built to withstand shock and vibration encountered in the marine environment. Excellent high-current-discharge behavior, accepts higher charging currents, and multiple batteries are easily linkable.

SlimLine Compressed AGM Batteries have such a small footprint that two of the SlimLine batteries can fit in the space of one conventional 8D battery. Up to 30% volume savings, and up to 15% weight savings. Threaded M6 insert terminals. Two year warranty.

Specs

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REVIEW SNAPSHOT®

by PowerReviews
MastervoltSlimLine Compressed AGM Batteries
 
3.0

(based on 2 reviews)

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    (1)

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Reviewed by 2 customers

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(1 of 1 customers found this review helpful)

 
1.0

Lose Capacity Quickly Not a True Deep Cycle

By Connecticut Captain

from Easton, CT

About Me Quality Oriented

Verified Reviewer

Pros

    Cons

    • Capacity drops quickly after one year
    • Pricey / Poor Value
    • Short Life

    Best Uses

      Comments about SlimLine Compressed AGM Batteries:

      I am extremely disappointed in these batteries. 200 AH capacity. x two batteries 400 AH total. I have an excellent charging system with temperature compensation, and track discharge depth, cycles and temperature. I use a modest sized charger--faster charger causes damage, and still these lost capacity quickly. I estimate I've lost 1/8 of the rated capacity in one year. I use an MPPT charge controller, and most of my discharges are less than 25% (75% SoC). Average discharge was: 49.1 AH -12.5%. Total AH removed: -286 Total AH Charged: 286 Number of Cycles: 40 Number of full discharges: 0. Note that in the 611 days of use, discharges occurred almost daily, but in small amounts, often less that 10 AH, so these did not count as charge/discharge cycles. So, how can I tell how much capacity I have lost without completely discharging these two batteries? Easy. I observe the rate of charge that the batteries can accept at the end of the charging cycle. What I have found when new, the charge rate slows way down for the last 15 AH or so. Now after using these for 611 days, the charge rate slows down at 60AH. What this means is my batteries never get to fully recharge in daylight hours. This was not a problem in the first year of usage. The solution is to adjust the capacity numbers to reflect the estimated capacity. Final thoughts. It is obvious that these slim line batteries can't have the capacity and longevity of thicker plate 8D batteries. My plan was to utilize these lightly, and I'd hope for a 10 year lifespan. I would have been smarter to buy a single 8D battery, and replace it after 5 years of usage, and with a lower capacity, my discharges would have been greater. On cost. I was disappointed to find these batteries $100 cheaper elsewhere. I regret paying too much for was has been proven to be an inferior product. I plan to request a refund from the vendor and purchase a Lithium battery instead.

      Service and delivery comments:

      No issues with delivery.

      • Primary use:
      • Personal
      • Was this a gift?:
      • No

      (11 of 13 customers found this review helpful)

       
      5.0

      Reliable power for this product

      By Tino

      from St. Petersburg, Florida

      About Me Quality Oriented

      Pros

      • Charges Quickly
      • Long Lasting
      • Powerful
      • Reliable Performance

      Cons

        Best Uses

          Comments about SlimLine Compressed AGM Batteries:

          I have had 4 900amp units for over 4 years and they are still going very strong one is dedicated to engine only and the other three are house bat's used with a 3000 watt inverter/charger running 24/7 on my boat. [...]

          • Primary use:
          • Personal

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