Latest Batteries Tech

Discussion in 'Hybrid' started by Yobarnacle, Dec 10, 2011.

  1. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    Technology is changing fast.
    I already have an electric boat.
    What's the best batteries to use? Pros cons?
    Presently I have 10 old 12v varied size lead/acid car batteries totalling 750 amp hours cap more or less.
    Motors, imersed water cooled, are 24 volt and variable imput from 5 amps to 116 amps.
    I mainly use in range of 12 amp to 30 amp, and not frquently 60 amp input.
    I have easily driven hull, 8.5 beam 30 ft loa, 2 ft draft, 4500 lbs loaded.

    Now I have proven the drive, looking for the permanent batterys to buy for installation.

    All suggestions welcome
     
  2. rasorinc
    Joined: Nov 2007
    Posts: 1,854
    Likes: 71, Points: 48, Legacy Rep: 896
    Location: OREGON

    rasorinc Senior Member

  3. philSweet
    Joined: May 2008
    Posts: 2,477
    Likes: 274, Points: 83, Legacy Rep: 1082
    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    normally one wants to meet a performance requirement or desirement- what is it. How much are you willing to spend? How much more for a bit more performance. How much saved would convince you to go a with a bit less? What sort of recharging scheme do you have in mind. Often, the recharge will pretty much determine where you end up, so you need to really think about that. It can be a very expensive part of an initial setup. Proving the charging system in "pilot plant" mode might be a reasonable second step. Try a 1/3 capacity bank added to what you have, that can be scaled.


    And please post all your experiences with the boat. Good, bad, and ugly. Data on builds and conversions is a lot more prevalent than the annuls of those who are living with the things. Have you been to the Yahoo Groups Electric Boat forum yet?
     
  4. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    Hi Phill, Hi Rasor,
    My boats a motorsailer. Not a Sail-or-motor. The concept is to take full advantage of the synergy between sails and prop propulsion. The ability to reach hull speed under either alone, is a good feature for "get home". I have generally accomplished that, but the impetus is economy while motorsailing. And ease of handling.
    At 30 feet and 4500lbs, she is a maxi-trailer-sailer. I mean the biggest I want to haul behind my 3/4 ton Dodge coversion van.
    I use hardware store battery chargers and swap connections.
    The permanent automatic charging circuit will depend on battery type.
    So, I'm seeking advice on what to buy.
    I would like a kiloamphours of battery power, less than 1000 lbs weight, long life, capable of thousands of recharges, quick recharging,fair price(2 grand -/+), and above all, SAFE.
     
  5. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    I meant $2 grand just for batteries. Chargers would be additional.
     
  6. philSweet
    Joined: May 2008
    Posts: 2,477
    Likes: 274, Points: 83, Legacy Rep: 1082
    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    well lets see- here's a little battery charger- nothing fancy-is a twenty hour recharge fast enough?

    http://www.iboats.com/Ci2430A-Heavy...ries-24V-30A-3-Bank-Charles/dm/view_id.118297

    figure another like amount for switches, fuses, blocks, lugs, and wire. Do we have a front end for this? 30A marine electrical cord, or is it a generator setup?

    Personally, I'd feel some minimal solar setup would be necessary. A couple of cheap 12v panels and an ASC controller and an overvoltage relay because those controllers fail closed and boil your batts. I haven't checked prices recently, but $700 should get it done and you can then just ignore everything for a month or six if you need to.

    18 of these in three banks of 3 X 2 might get more than 500 cycles if you are careful with them. Could also use 12 of the SC250H

    So about $5000 unless it's a complete cobble. No brand recommendations intended here, just examples of normal stuff. I would recommend looking at Sun Electronics site for solar and low voltage power distribution gadgetry. They are out of Miami.

    (I interpreted kiloamphour to be 12 kilowatthours, even though this is a 24 volt sys)
     
    Last edited: Dec 11, 2011
  7. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    Sounds do-able. Looking at peltier chips for charging instead of solar panels. Peltier work from heat or cold, as long as there is a differential on two oposing sides. Greater the difference, greater current produced. Advantages are work on cloudy days, at night, as well as bright sun. Hardier more durable, and applying power they become coolers or heaters, depending on polarity
     
  8. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    the link rasorinc provided offers these
    Surrette Battery Bank
    24VDC 800Ah 19,200watthrs 8 Surrette 6v, 400 Ah S530
    Interconnect Cables and Float Hydrometer 9990011 was $3,026.00
    sale $2700.00
    More initial outlay but claim good for 5000 recharges or more.
    Guaranteed for 10 years, claim actual service life 15 to 20 years.
    I'd pay xtra for longer life
     
  9. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    some while back was looking at a blog where a fellow built his own hybrid car, actually a re-power.
    He had individual batterychargers on each battery. Bought them on Ebay. They appeared to clamp on top, were same width and length as battery and added about 2 inches in height. Supposedly they did battery monitoring and other helpfull features besides charging. Can't find the link.
     
  10. FAST FRED
    Joined: Oct 2002
    Posts: 4,519
    Likes: 110, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Remember what ever you chose to only use COPPER nuts , bolts and washers.

    No SS, no bronze for your connections.

    These are hard to find , but the local power co guys have em by the box full.
     
  11. michael pierzga
    Joined: Dec 2008
    Posts: 4,862
    Likes: 115, Points: 0, Legacy Rep: 1180
    Location: spain

    michael pierzga Senior Member

  12. Pericles
    Joined: Sep 2006
    Posts: 2,009
    Likes: 135, Points: 63, Legacy Rep: 1307
    Location: Heights of High Wycombe, not far from River Thames

    Pericles Senior Member

  13. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    Many of the "Marine" deep cycle batteries advertize, besides normal posts, they include stainless screw in terminals. A good thing or bad?
     
  14. michael pierzga
    Joined: Dec 2008
    Posts: 4,862
    Likes: 115, Points: 0, Legacy Rep: 1180
    Location: spain

    michael pierzga Senior Member

    First put together an estimate using the best available deep cycle batteries...Absolyte .

    Used by the military and USCG for aids to navigation and can be purchase in horizontal and vertical configurations.

    Absolyte batteries many times can be bought used from bankrupt alternative power stations or at government auction. Give it a google

    http://www.norwatt.es/pdf/Tudor/bateria-absolyte-ipp-energias-alternativas.pdf
     

  15. Yobarnacle
    Joined: Nov 2011
    Posts: 1,747
    Likes: 130, Points: 63, Legacy Rep: 851
    Location: Mexico, Florida

    Yobarnacle Senior Member holding true course

    Wow! Heavy batteries. Thanks Michael for the info. I'm not sure I could deal with the weight factors.
    I use 5gal water cooler bottles and batteries as ballast as well as for power and drinking. Everything is secured, tied down. But, I designed an alternate locations for a few of each, for trim purposes. Moving a 70 lb battery from starboard bank to port bank can eliminate an annoying list. Water bottles are simpler to shift as there is no wiring to hook un-hook.
    But 5 gallons of fresh water only weighs 40 lbs. and the water is a consumable. After you drink all the starboard stowed water and still are listing to starboard, drinking water from port side exacerbates the list.
    Small vessel of shoal draft are sensitive to trim. My hull stiffens dramatically at about 5 degrees of heel, hard to heel her more even under press of canvas (dacron). But pretty tender that first 5 degrees. Don't like lying on my ear. :)
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.