I have an UPS with two 12v 7ah lead batteries. If I want to change the batteries I would typically go with lead batteries but here’s my question, can I use some portable mobile batteries to use it?

Because I have a 20000mah inui battery that is rated for 12v at 1.5A is this a good practice to buy several of these (since they are about 20 bucks) disassemble them and use them as ups batteries?

  • ChaoticNeutralCzech@feddit.orgEnglish
    3·
    3 hours ago

    You need a balancing BMS anyway and the UPS will not be able to charge it to what it thinks is 100% (about 15 V at trickle current) unless you trick it with a resistor (which wastes power of course).

    • MangoPenguinEnglish
      2·
      3 hours ago

      Yeah you need a UPS that’s OK with the BMS charge FETs opening when the battery is full.

        • MangoPenguinEnglish
          2·
          2 hours ago

          Some are ok with it, on a thread I saw on reddit awhile ago about LiFePo4, people had reported a few models that worked fine with the upgrade.