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  1. P

    Acceptable Cell Balance Range

    Its currently connected to my Victron setup. What would you expect to see as acceptable range once settled?
  2. P

    Acceptable Cell Balance Range

    I have Lischen 270Ah cells connected in series for a 4S1P configuration. Here are my cell voltages. Is this an acceptable tolerance. Pack Voltage is sitting at 13.92V Delta between highest and lowest measuring ~ 0.047mv 1: 3.502v 2: 3.455v 3: 3.475v 4: 3.496v
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    Bad Cell?

    You guys are correct. It was bad connections. I made the cable lugs out of copper pipe and they are not entirely flat. Thanks
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    Bad Cell?

    I will check but they seem tight. Here is a photo of my kit. It’s the pack on the left. Third cell from the top.
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    Bad Cell?

    Hi, so my new prismatic battery I built is exhibiting a behaviour where at rest or low discharge current cell 3 is operating at nominal voltage compared to the other cells. However when under load (see second photo) the cell exhibits a voltage drop that is not nominal compared to the other...
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    Custom Made LifePo4 Case

    So I designed and built these cases using 3mm Russian Baltic Birch. I designed them in Fusion 360 and cut them on my laser cutter. They are home to 270ah 12v Lishen Lifepo4 cells. The cases are surprisingly strong when using Baltic Birch glued together with the "finger" joints. Inside the cases...
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    Sharing My Custom Installation: Battery Cases

    So I designed and built these cases using 3mm Russian Baltic Birch. I designed them in Fusion 360 and cut them on my laser cutter. They are home to 270ah 12v Lishen Lifepo4 cells. The cases are surprisingly strong when using Baltic Birch glued together with the "finger" joints. Inside the cases...
  8. P

    4S Li ion 120A BMS incorrectly reading cell 2

    Thanks for the feedback. The wiring harness did not change and is verified in correct sequence when connected to the ISDT meter.
  9. P

    4S Li ion 120A BMS incorrectly reading cell 2

    I just received this BMS and connected it to my 4S pack. Cell number two is incorrect. If you watch my video you can see that when I connect to my ISDT cell reader I see the correct value for cell 2. Is this BMS defective?
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    Overkill Solar vs JBD direct purchase

    Hi @HRTKD this confirms my assumption that the OKS version of the BMS is most likely a rebadged JBD piece of hardware. I'm not going to get into why one should purchase OKS vs direct from JBD, both have their own benefits. Thanks for looking and reporting back.
  11. P

    Overkill Solar vs JBD direct purchase

    Ok, so no change in spec in hardware or firmware. Risks aside, these are identical products. Thanks for your responses.
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    Overkill Solar vs JBD direct purchase

    The Overkill Solar (OKS) BMS (4S 120A) is a badged version of the JBD BMS you can find on Aliexpress direct from the JDB store. Aside from risks I may take to purchase from Aliexpress and the unconditional warranty offered by OKS was there anything else modified in hardware or firmware by OKS...
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    JBD / Overkill BMS 120A 4S Lifepo4 in series / parallel

    @squowse Can you clarify your question. Are you asking about connecting two BMS to a single 12V (4S) pack OR connecting two 12V (4S) packs each with it's own BMS in parallel configuration? I'm confusing myself now o_O
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    Help Requested: Recommended BMS Size

    My inverter is the Victron Multiplus 12v 3000W so in theory if I use a Daly 150Amp BMS in each of my 280A 12V batteries the maximum theoretical upper limit power output of the battery bank would be 300A ("2 x 150A BMS") x 12V = 3600W. Of course taking into consideration the efficiency loss of...
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    Help Requested: Recommended BMS Size

    To summarize then if I am ok with getting 2400W of continuous output from the 100A BMS in battery connected in parallel then I do not need to invest in a BMS larger than 100A. That is my take away. Of course if I want more watts output then I need to upsize the BMS.
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    Help Requested: Recommended BMS Size

    Is my understanding correct? If I have 2 batteries that are 12V 280Ah each and connected in parallel and each battery has a 100A BMS would the maximum continuous power output be capped to 12V x 100A (BMS) = 1200W? If so then to get more power output I would need to increase the BMS AMP size in...
  17. P

    Help Requested: Recommended BMS Size

    Do you recommend a particular BMS model or manufacturer? Got a link? Thanks
  18. P

    Help Requested: Recommended BMS Size

    I am about to build a battery bank that will have a combined 560Ah total capacity @ 12V. I have a Victron Multiplus 12V/3000w/120V inverter/charger. That particular charger can output 3000W. My battery bank will consist of 2 x 12V 280Ah (DIY Prismatic cells). Can you help me with recommending...
  19. P

    Scream Power LiFePo Batteries - Should I try them?

    @Darrenm01 Did you test low voltage charge cutoff? I've been reading that the BMS does not have low voltage protection. Can you confirm. BTW, I'm in Ottawa and considering purchasing these for my RV.
  20. P

    280ah cells

    @Michael B Caro PM sent for a quote. Thanks
  21. P

    From Ottawa Canada

    Just saying Hi.
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