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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
2) Where can I buy Lithium Batteries https://jag35.com/collections/lithium-batteries
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5) Where can I buy a Battery Management System https://s.click.aliexpress.com/e/_AAgcFQ
6) What parts do you use on your Samba? https://j35.us/eSambaParts
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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