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Battery - to take advantage of 2am to 5am cheap rate electricity - v2

1…457910…16

Comments

  • #182
    [Deleted User]
    Posts: 2,768 ✭✭✭ [Deleted User]


    https://www.boards.ie/discussion/comment/122401459#Comment_122401459

    Ya, there needs to be more joined up thinking on these issues. I can't believe that large fee for disconnecting the gas. I checked recently with Calor as I will want to disconnect the Lpg soon enough and there's no charge.

    Post edited by graememk on


  • #183
    unkel
    Registered Users, Registered Users 2 Posts: 60,766 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122401496#Comment_122401496

    LPG is just a local service like an oil tank. It is not a centralised network service, like gas or electricity

    Post edited by graememk on

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #184
    drury..
    Registered Users, Registered Users 2 Posts: 2,203 ✭✭✭drury..


    MIC upgrade isn't just a fuse swap

    It may be decide that's all they will do

    Unkel ; Did you make up your mind if you have a main fuse or main mcb ?

    Post edited by graememk on


  • #185
    Cuddlesworth
    Registered Users, Registered Users 2 Posts: 14,022 ✭✭✭✭Cuddlesworth


    ESB have all the usage data now on a per half hour basis. Knowing how obstinate they are, I'd imagine if they felt that the 12kva was a hard limit they could send a letter/email to the mprn account holder warning them. Or they could just pay you to whine about it here.

    Post edited by graememk on


  • #186
    drury..
    Registered Users, Registered Users 2 Posts: 2,203 ✭✭✭drury..


    Ive never heard of it being a hard limit for domestic

    That doesn't mean it's good practice to exceed it

    Post edited by graememk on


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  • #187
    loyatemu
    Registered Users, Registered Users 2, Paid Member Posts: 16,438 ✭✭✭✭loyatemu


    related question - how long to charge a 5kWh battery. The inverter is 5kW, so an hour?

    from what I'm reading above it might be prudent if I'm charging the car for 3 hours to have the house battery charging, and the immersion on at different times, and not all 3 together?

    Post edited by graememk on

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  • #188
    yankinlk
    Registered Users, Registered Users 2 Posts: 2,827 ✭✭✭yankinlk


    https://www.boards.ie/discussion/comment/122415577#Comment_122415577

    I always set my battery to charge low and slow to reduce heat and wear. That used to be 8 hours ending at 8am. But as the window gets smaller i adjusted. I want it full at the end of the cheap rate time.

    Post edited by graememk on


  • #189
    ...Ghost...
    Registered Users, Registered Users 2, Paid Member Posts: 5,878 ✭✭✭...Ghost...


    https://www.boards.ie/discussion/comment/122415577#Comment_122415577

    Set it to charge between the cheap window, same time as the car. Otherwise, if the charge cycle ends too soon, the battery will dump into the car. You don't want that to happen.

    Post edited by graememk on

    Stay Free



  • #190
    loyatemu
    Registered Users, Registered Users 2, Paid Member Posts: 16,438 ✭✭✭✭loyatemu


    https://www.boards.ie/discussion/comment/122426722#Comment_122426722

    I plan to set it to charge 2am-5am and not discharge until the afternoon so it covers the peak charge period.

    Post edited by graememk on

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  • #191
    ...Ghost...
    Registered Users, Registered Users 2, Paid Member Posts: 5,878 ✭✭✭...Ghost...


    https://www.boards.ie/discussion/comment/122428213#Comment_122428213

    Depending on your inverter, you will need to set it to charge from 2am until the time you want it to start discharging. Otherwise it will start to feed the house after 5am. By setting it to charge from 2am to 2pm for example, the battery might be full by 3am, but will hold its charge until 2pm.

    Post edited by graememk on

    Stay Free



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  • #192
    loyatemu
    Registered Users, Registered Users 2, Paid Member Posts: 16,438 ✭✭✭✭loyatemu


    yeah, I'll have to play around with the settings and see what works best. Solar will recharge the battery as well, so it's only really in the winter I'm concerned about the peak rate kicking in.

    Post edited by graememk on

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  • #193
    irishchris
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭irishchris


    Just about to pick up anther 16 cells from nkon but notice the 315ah are no longer available. Anyone have an idea how long these are normally out off stock? Weeks/months?

    Post edited by graememk on


  • #194
    unkel
    Registered Users, Registered Users 2 Posts: 60,766 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122475812#Comment_122475812

    How much in total incl. VAT and delivery? How many cells will you have with the new set, 48 or 64?

    Post edited by graememk on

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #195
    graememk
    Moderators, Home & Garden Moderators Posts: 7,609 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122475812#Comment_122475812

    Last time I checked the 315 were due in mid sept, that batch is likely sold out now.

    If you email them, they might have another shipment planned.

    Post edited by graememk on


  • #196
    ...Ghost...
    Registered Users, Registered Users 2, Paid Member Posts: 5,878 ✭✭✭...Ghost...


    https://www.boards.ie/discussion/comment/122475812#Comment_122475812

    Every 6 weeks from my reckoning. The 315Ah are 305Ah though according to the label on the cells. I've ordered twice from them. Picked up 16 cells last week directly from them.

    Post edited by graememk on

    Stay Free



  • #197
    irishchris
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭irishchris


    https://www.boards.ie/discussion/comment/122476100#Comment_122476100

    Have 32 200ah calb cells for last two years although capacity has dropped back on them.

    Adding 16 of the nkon 315ah cells whenever stock returns

    €1160 delivered was the price last time they were in stock

    Post edited by graememk on


  • #198
    unkel
    Registered Users, Registered Users 2 Posts: 60,766 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122477397#Comment_122477397

    315Ah is pretty much spot on 1kWh. So €1160 for 16, that's insanely cheap at €72 per kWh incl. delivery and taxes

    You going to have two banks in parallel, 32 CALBs and 16 EVEs each with their own BMS?

    Post edited by graememk on

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #199
    graememk
    Moderators, Home & Garden Moderators Posts: 7,609 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122477929#Comment_122477929

    The 2 banks is the only way to do it.,

    Easy to expand too, just keep adding 16 cells 😂

    Post edited by graememk on


  • #200
    irishchris
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭irishchris


    https://www.boards.ie/discussion/comment/122477929#Comment_122477929

    Yep that's the plan. Have second DIY box and jk bms waiting here for then whenever they are in stock. Just need to order positive and negative busbar also.

    Post edited by graememk on


  • #201
    slave1
    Moderators, Sports Moderators Posts: 18,873 Mod ✭✭✭✭slave1


    https://www.boards.ie/discussion/comment/122477397#Comment_122477397

    Go on, make it 32, get it over and done with, my 32 CALB are rock steady capacity wise so I'll wait before expansion but it will deffo be from nkon and a big bank

    Post edited by graememk on

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  • #202
    irishchris
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭irishchris


    I might 😁 need them to get in stock first

    Post edited by graememk on


  • #203
    irishchris
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭irishchris


    Just ordered 16 x 280ah cells there from nkon. What have others done here with multiple batteries. Assume run positive from both batteries to positive busbar and then to inverter and same with negatives to separate busbar?

    Looking at busbar options most of the 150A busbars seems to have small 1/4 inch terminals. If anyone has link to better one they have sourced would appreciate it.

    Post edited by graememk on


  • #204
    unkel
    Registered Users, Registered Users 2 Posts: 60,766 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122503369#Comment_122503369

    Yep, positives in parallel on solid copper positive busbar, then cable from busbar to overall battery disconnect positive (like a 250A Jean Mueller that several of us have). Same on the negatives, all P- from the BMS to negative solid copper busbar, then cable from busbar to overall battery disconnect negative and of course both positive and negative from the disconnect into your inverter

    How much were the cells in total incl VAT and delivery? So how much per kWh?

    Post edited by graememk on

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #205
    graememk
    Moderators, Home & Garden Moderators Posts: 7,609 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122503369#Comment_122503369

    It takes 3 months but Ive one of these boxes sitting in the pending project spot.. (still havent got around to getting cells lol)

    https://www.alibaba.com/product-detail/Luyuan-DIY-Battery-Box-Case-for_1601043655285.html

    Got it with an inverter JK bms and screen

    Post edited by graememk on


  • #206
    irishchris
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭irishchris


    https://www.boards.ie/discussion/comment/122503401#Comment_122503401

    1,056 for the cells. 1,128 with delivery.

    Post edited by graememk on


  • #207
    SD_DRACULA
    Registered Users, Registered Users 2 Posts: 2,728 ✭✭✭SD_DRACULA


    https://www.boards.ie/discussion/comment/122503405#Comment_122503405

    Got a few of them too but I don't like how the Nkon cells are too fat, they push way past the compression plate.

    I think it you have A grade might be fine but they still fit, with longer bolts for the compression plate.

    They actually asked me what dimensions were the cells and I went by the spec sheet which was way off 🤣

    And yeah I have 3 packs connected to one of the jean mullers disconnects, they have big M10 bolts but I think I will split the packs over two switches because apparently I have to populate two + and - terminals inside the inverter.

    Post edited by graememk on


  • #208
    graememk
    Moderators, Home & Garden Moderators Posts: 7,609 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122503721#Comment_122503721

    You possibly could put just the positives through the jean Muller fuse?

    Post edited by graememk on


  • #209
    unkel
    Registered Users, Registered Users 2 Posts: 60,766 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122503473#Comment_122503473

    Less than €79 per kWh including all taxes and delivery. Sweet!

    Must be the cheapest new cells that we have seen in this forum?

    Post edited by graememk on

    "Make no mistake. The days of the internal combustion engine are definitely numbered" - Quentin Willson, 1997



  • #210
    SD_DRACULA
    Registered Users, Registered Users 2 Posts: 2,728 ✭✭✭SD_DRACULA


    https://www.boards.ie/discussion/comment/122504013#Comment_122504013

    True but the jean mullers are only rated 250a and I could easily go over that when it comes to 15 kw o'clock so I think splitting the load is better for them in the long term.

    Post edited by graememk on


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  • #211
    graememk
    Moderators, Home & Garden Moderators Posts: 7,609 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122505280#Comment_122505280

    250 amp per fuse, if you have half your battery on one fuse and battery connection, and the other half on the other, 250 amp fuse and it's battery connection

    Post edited by graememk on


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