New type $$$ Marine Batteries

Discussion in 'Electronics Q&A' started by molson9, Feb 15, 2015.

  1. molson9

    molson9 New Member

    Jan 14, 2015
    Leaward Marine James River Newport News Virginia
    1988 300 Weekender, 12' dingy 8.8 merc, Garmin 2010c - card.
    2 merc 5.7's
    [h=1]Lithium Marine Batteries[/h][h=3]Anybody using Lithium Ion Marine Batteries?

    I need to replace two of my three batteries. So I Google searched on Super more better marine battery and among other stuff I found the information I copied and pasted below about Lithium Ion Marine Batteries.
    they say they are 1/2 the weight with special protection and longer lasting.

    Lithium Ion Marine Batteries;

    Found the below on the

    100% DOD (depth of discharge)
    [/h]Lithium Ion Batteries allow you to use 100% of the rated capacity whereas agm batteries typically recommend not to drain below 50%
    [HR][/HR][h=3]70% Lighter than lead[/h]Lithium Ion Batteries are typically 70% lighter than the same size lead battery
    [HR][/HR][h=3]Long Life[/h]Lithium Ion Batteries can last 3000 - 5000 cycles whereas most lead batteries can last 300 - 500 cycles
    [HR][/HR][h=3]Zero Maintenance[/h]Lithium Ion Batteries require no maintenance and can hold a full charge for over 1 year
    [HR][/HR][h=3]Built In Battery Protection[/h][​IMG]

    Every Smart Battery has a built in fully automatic battery management designed to protect the battery from:

    • Low Voltage
    • Over Voltage
    • Short Circuit
    • Reverse Polarity
    these features help protect the
    lithium ion core and your investment.

    [HR][/HR][h=3]99.1% Efficient [/h][​IMG]
    Smart Battery Lithium Ion Batteries are 99.1% efficient and do not heat up during use or charging like lead batterie
  2. Boat Guy

    Boat Guy Well-Known Member

    Those do look expensive...

    A couple of thoughts.

    1. I'd be a little concerned with LI batteries and fires. I'm sure they are working out the bugs, but remember these are what caused the issues on the 787. As I understand it, they never fixed the issue. They just sealed the batteries in a stronger metal "fire-proof" case.

    2. Elon Musk is announcing new battery technology with his new facility. I believe he wants to provide better batteries for people with solar homes. It could be something to keep an eye on.

    If I had some time to look into batteries, I'd be patient. Or, I'd buy the Die Hard Platinums and same the money.
  3. sdleo26

    sdleo26 Member

    Feb 5, 2011
    Long Island, NY
    290 Amberjack 2004
    350 5.7 MAG MPI Horizons w/ V-drives
    sounds like s no brainer, I am sure they are pricey, but in boat dollars it's probably worth it!
  4. molson9

    molson9 New Member

    Jan 14, 2015
    Leaward Marine James River Newport News Virginia
    1988 300 Weekender, 12' dingy 8.8 merc, Garmin 2010c - card.
    2 merc 5.7's
    I like the Die Hard, but have been eyeballing the Optima Blue Tops. Little more money but the rolled cells seem to last longer and have more power. Or at least that is what I see advertised. So my wife's Harley needs a new Battery, just ordered her a brand new Lithium Ion battery (sold by battery tender) from Amazon. Should be here next week. Comes with Styrofoam spacers to fill in the battery box. They say half the weight and smaller and the same capability and the promise it will give love long time. Cannot wait to see what I get. I will post the findings later.
    Last edited: Feb 15, 2015
  5. Boat Guy

    Boat Guy Well-Known Member

    Keep us posted...

    I like the idea and the light weight. I think the 31m's I got were about 90lbs each.

    I like BatteryTender products. Though, I'd go Enersys (Die Hard Platinum) over Optima.
  6. kaz911

    kaz911 Active Member

    Jan 24, 2011
    In Transit -> London
    Li-Ion Batteries are super - but they are pricey.

    Mastervolt makes Marine Li-Ion batteries. But they do not have the outrages claims from SmartBattery.

    99.1% efficient ? Bull or twisting facts.... Makes me doubt their engineering knowledge and their entire info package. I think so far even the best Li-Ion batteries like Tesla's - are about average 85% efficient and according to Tesla 92% peak. But that is with very special chargers connected that are very very smart. With normal marine rated chargers for Li-Ion I would guess around 65-85% efficient.

    Discharge cycles 3000-5000 ? Doubt it - 2000 cycles is more reasonable/optimistic - and is usually what is quoted for 80% of Amps left. They probably the use the same Panasonic 18650 cell's as Tesla but without Tesla's engineers to tweak them. 300-500 full deep-cycles are the norm for Li-Ion after which battery capacity drops quite quickly. The 2000 cycles people normally mention is for partial discharge only. And temperature influences Li-Ion a lot - so in a hot climate they will probably last nowhere near the what is mentioned above.
  7. Do Over

    Do Over Member

    Aug 9, 2014
    Lake of the Ozarks
    2002 340DA
    8.1 Horizons
    $2000-$3000 in batteries? I don't care how good they are.....I'll stick with older technology for now.
  8. kkalsch

    kkalsch Member

    Aug 3, 2010
    Pine Knoll Shores NC
    2016 Sea Hunt Gamefish 27
    Fuel Sipping Yamaha F150's 4 stroke
    No kidding...I am going to go hung my $97 Walmart batteries -that I usually get 3 plus years out of
  9. dpmulvey

    dpmulvey New Member

    Dec 19, 2007
    Homeport: Charles City, VA
    1999/2007 330 Sundancer Hardtop.
    6.2 Merc Horixons
    1.5:1 Velvet Drives

    The he newer Optina's have been having huge longevity issues. I'd shy away from them. Wet cell technology is tried and true. With a golf cart watering system, maintenance is a cake walk.
  10. M T Pockets

    M T Pockets New Member

    May 9, 2013
    Chesapeake Bay
    48 Sundancer 2008, Raymarine E120 GPS/chartplotter/radar
    Cummins QSC 540
    Lead acid is still your best bang for your buck, the lithium will be tough to get rid of when you go to replace them. They are not able to be recycled, haz waste, lead acid can be100% recycled and easy to get rid of. Lithium very difficult and expensive to smelt.

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