3.5k for a 10kWh battery bank?

lolcashcowlolcashcow Solar Expert Posts: 118 ✭✭
edited November 2015 in Solar Beginners Corner #1
Hi Guys,

I just read that a 10kWh Tesla Powerwall pack costs 3.5k. That seems okay to me though I don't know that much on battery prices (I think the Tesla one is Lithium Ion instead of AGM). Anyway, I was wondering how big of a battery bank I would be able to get if I were to try and buy one (Not from tesla)? Meaning I'd need some help on figuring that out :(. Could I get a bigger bank by buying from a different supplier? If so, from who?

Thank you all :)

The daily cycle 7 kWh battery uses nickel-manganese-cobalt chemistry[8] and can be cycled 5000 times.[8][9] The 10 kWh battery uses a nickel-cobalt-aluminum cathode,[8] like the Tesla Model S,[9] is for weekly or emergency use and has a cycle life of 1000–1500 cycles.[10][11][12][13]

It includes a DC to DC converter to sit between a home's existing solar panels, and the home's existing DC to AC inverter.[14]

The good news is that the Powerwall will get even cheaper. When production moves into Tesla's Gigafactory in Nevada — which Musk said will happen next year — it's likely the production price (and hopefully, end-user price) will drop.


Comments

  • westbranchwestbranch Solar Expert Posts: 5,181 ✭✭✭✭
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
  • oil pan 4oil pan 4 Solar Expert Posts: 766 ✭✭✭✭

    I expect the price to only dip during tesla market penetration and flooding from asset liquidation of failing competitors.

    What do you think will happen when all the existing battery producers get driven under? Then tesla can sell them for whatever price they want.

    Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.

    Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.

  • westbranchwestbranch Solar Expert Posts: 5,181 ✭✭✭✭
    IMHO his price projections are like vapourware...  example his statement about selling his cars for ~ $30,000, >>> Say Whut???
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
  • Dave AngeliniDave Angelini Solar Expert Posts: 4,990 ✭✭✭✭✭
    Say Whut is right!  When we see them in the store here at Wind/Sun or when my distributor even tells me soon, That is when I wait several years. I really have very little trouble with the lead acid L16 for 10 years on average. About 83 systems now.
    "we go where power lines don't" Sierra Mountains near Mariposa/Yosemite CA
     http://members.sti.net/offgridsolar/
    E-mail [email protected]

  • lolcashcowlolcashcow Solar Expert Posts: 118 ✭✭
    edited November 2015 #6


        Hey! Thanks for the link. It looks like these are still more expensive than the Tesla Powerwall. Operating Life 3,000 Cycle at 80% DOD while the Tesla powerwall 7kw version seem to be cycled 5000 times. The tesla powerwall comes with a 10 year warranty I'm not sure how long the warranty on these are I can't find it on the item description. Seem like the tesla powerwall is still a better deal? Unless I'm missing something

        oil pan 4 said:

        I expect the price to only dip during tesla market penetration and flooding from asset liquidation of failing competitors.

        What do you think will happen when all the existing battery producers get driven under? Then tesla can sell them for whatever price they want.


    I see, even if it does work that way I think that time would be a great time to buy a pack at a pretty cheap price.

    At least from what I am seeing the Tesla powerwall seems to be a good buy??? Thoughts on that?
  • westbranchwestbranch Solar Expert Posts: 5,181 ✭✭✭✭
    search for  Tesla, here, as there was a long discussion of them, lots of info ....
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
  • BB.BB. Super Moderators, Administrators Posts: 29,994 admin
    It really comes down to early adopters... There are (frequently) some sort of price reduction by the manufacturer (trying to get market penetration)--And there is the customer that is willing to take the risk ("non-standard" hardware, unknown product life, possible obsolescence) for a new product that may be a better choice for his/her needs.

    If you are not willing/able to risk the cash--Don't bother yet. And--If you are still sensitive to costs, even off grid power using Lead Acid and standard components is still not cheap--And add that failures do occur (early life battery and electronics failures, hail storm hitting panels, etc.), running an electric vehicle off grid is not a simple slam dunk decision.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • Dave AngeliniDave Angelini Solar Expert Posts: 4,990 ✭✭✭✭✭
    Adding to Bill the one thing that is a the big one for me. The magic wandu so to speak, and that is losing power for any reason.
    Quite a bit different when you have the grid to save you.
    "we go where power lines don't" Sierra Mountains near Mariposa/Yosemite CA
     http://members.sti.net/offgridsolar/
    E-mail [email protected]

  • lolcashcowlolcashcow Solar Expert Posts: 118 ✭✭
    Thanks guys but just still wondering if there are cheaper options out there for the same amount of storage capacity? The links provided earlier do not seem to be cheaper options. Do you guys know any other provider that might have a cheaper cost for the same amount of storage capacity?
  • westbranchwestbranch Solar Expert Posts: 5,181 ✭✭✭✭
    edited November 2015 #11
    Read up on the power wall, there is a good dissection of it here on the forum and make sure you know its limitations, specifically and also vis a vis the other Li chemistries
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada
  • new2PVnew2PV Solar Expert Posts: 305 ✭✭
    edited December 2015 #12
    What about a forklift battery? You proabably could get a 50 kw unit for $4-5000
    XW6848 inverter with 2 X mppt 60 150 CC , with Canadian solar 260Watt panels 2 x 3.5 kw array
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