diy solar

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  • Post in thread: Relay Tips for >300 amp 48v battery systems

    I have a question and then the real question.... I bought a JBD - JK-B2A25S-60P BMS for my battery bank (300 A-H, 48v 16s1p) and I have struggled to select the right relay for it. I've come down to these general guidelines for selecting a relay contact for operating the system. I would like...
  • Post in thread: Relay Tips for >300 amp 48v battery systems

    Yea I saw that thread and it was extremely helpful but I couldn’t find the max amperage off the coil circuit. Some relays require up to 4 amps to close the switch. It may be that I should just grab myself a relay with a 3-4 amp coil surge current when closing and see if the BMS can handle it...
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