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Open Source project - https://www.pcbway.com/project/shareproject/Jag35_12v_100Ah_LiFePO4_Battery_BMS_main_Board_ccd5a377.html
Or buy it Built https://jag35.com/products/slm24-lifepo4-12v-100a-4s2p-1200wh-battery
FAQ:
1) Where can learn more about batteries? http://j35.us/DIYlithiumBatteryBook
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8) Why not use Supercapacitors?
A. Batteries work better at this time, caps are rare and expensive devices that are very good at doing things not needed for storage systems typically.
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15 thoughts on “200a bms for 12v a123 lifepo4 batteris at jag35”
  1. Avataaar/Circle Created with python_avatars Jim Merrin says:

    Hi,

    What are the dimensions of this battery please?

    Thanks.

  2. Avataaar/Circle Created with python_avatars Chris Nguyen says:

    3 questions. Charger would attach to the Aux+-? Multiple of the BMS in parallel would be fine? Do you know if this BMS can be chained for 24v?

  3. Avataaar/Circle Created with python_avatars Dusty Tillery says:

    I am curious about the ‘aux -‘ and the ‘aux +’ on the board. When I measure with my meter, they seem labeled backwards. Why do I read negative voltage when reading across them with probes biased according to the labels?

  4. Avataaar/Circle Created with python_avatars kári østerø says:

    Hi Jehu, What should i buy if I am to build a powerwall at home. My situation is, that the electrisity is 4 to 7 times as expensive during the day, so I would like to make myself a system, that charges during the night, and that I could use during the day, for everything in my house? I’m in denmark, so we have 220v-230v. Would love to hear what you think???

  5. Avataaar/Circle Created with python_avatars Hank Wright says:

    Is there a way to get on a notification list for when these come back in stock. Each time I get excited watching one of the videos the promoted product is sold out. Frustrating, but good for y'all. I don't have time to catch it when they are in stock so a list would be helpful or a back order system. Thanks! I've been a fan and learned so much following you over the years.

  6. Avataaar/Circle Created with python_avatars Hank Wright says:

    your site shows product sold out

  7. Avataaar/Circle Created with python_avatars Stephen Enloe says:

    jehu, can you mix different lithium battery types either in series or parallel as long as voltage is the same and BMS monitored.

  8. Avataaar/Circle Created with python_avatars Andrea Dingbatt says:

    Thank you so much for sharing this with us All!!
    Much appreciated!!😎✌️

  9. Avataaar/Circle Created with python_avatars StJames says:

    Thanks for the video showing the process! I bought 2 of these and I want to use them in parallel. Do I need to make sure they are the same voltage before connecting them?

  10. Avataaar/Circle Created with python_avatars Eric C says:

    Any more coming in stock soon?

  11. Avataaar/Circle Created with python_avatars Jimmy Blue says:

    Geez, the video just came out and this is sold out?

  12. Avataaar/Circle Created with python_avatars Crypto_Monk says:

    Hey can we use the battery for the house if we buy couple of them? I have solar but no battery backup. I have 5KWh inverter connected to the Solar.

  13. Avataaar/Circle Created with python_avatars Geass Sogeki says:

    May I ask what is good this 12v battery?
    Car starter?

  14. Avataaar/Circle Created with python_avatars ken johnson says:

    What cells are used to build this?

  15. Avataaar/Circle Created with python_avatars END USER says:

    Already sold out!!! Noooo

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