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Anyone try "1.5v" "Li-Ion" batteries with a MicroUSB charge port yet?

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  • the86d
    Calguns Addict
    • Jul 2011
    • 9587

    Anyone try "1.5v" "Li-Ion" batteries with a MicroUSB charge port yet?

    Such as these:



    I AM GUESSING that 10000 mWh is a bit exaggerated...
  • #2
    Romeo_alpha01
    Senior Member
    • Jan 2017
    • 2010

    I have a 21700 cell that has a built in Micro USB charger. Also have a 9V version for my Shot Timer.

    If they could do this with CR123 or AA batteries I would be so happy.

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    • #3
      WalterJones
      Member
      • Aug 2013
      • 278

      Not with the micro usb, but I am trying out some of the EBL rechargeable AA batteries that require a charger.

      Not too impressed. They don't seem to last much longer in devices than a good ole NiMh battery in devices like 2 way radios or GPS units. If they'll keep from self discharging better than NiMh then they might be worth it, but haven't tested that yet.

      And IMO, neither compares to disposable lithiums for battery life, but the disposables do quickly add up in price.

      The other drawback is than none of my chargers recognize them so I had to get a proprietary charger.
      .
      Maybe someone here can enlighten...why are these rechargeable lithium batts rated in MwH when other lithium like 26650 and 18650 are rated in MaH? Amd how do you compare MwH to MaH?

      Comment

      • #4
        rb765
        Member
        • Feb 2012
        • 466

        Originally posted by Romeo_alpha01
        I have a 21700 cell that has a built in Micro USB charger. Also have a 9V version for my Shot Timer.

        If they could do this with CR123 or AA batteries I would be so happy.
        Thy this: https://www.batteryjunction.com/feni...RoCM_YQAvD_BwE

        The 16340 is interchangeable with the CR or DL 123 batteries, but be careful as they do not last as long, and may put up a bit higher voltage. I have one light that will only run these and not the 123's. Other lights may have an issue with the higher voltage, so ymmv.
        "You can have peace. Or you can have freedom. Don't ever count on having both at once."

        Robert A. Heinlein


        NRA Life Member

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        • #5
          the86d
          Calguns Addict
          • Jul 2011
          • 9587

          Originally posted by Romeo_alpha01
          I have a 21700 cell that has a built in Micro USB charger. Also have a 9V version for my Shot Timer.

          If they could do this with CR123 or AA batteries I would be so happy.
          Tenergy RCR123A 3.0v rechargeables are pretty reasonably priced, and are LiFePo4's I think, which are safer than Li-ion... They do require special chargers for 3.0v batts, and are only like 750MaH, but if you get enough...?

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          • #6
            Citizen_B
            Senior Member
            • Mar 2014
            • 1429

            Originally posted by WalterJones
            Maybe someone here can enlighten...why are these rechargeable lithium batts rated in MwH when other lithium like 26650 and 18650 are rated in MaH? Amd how do you compare MwH to MaH?
            A "mWh"includes the voltage in the calculation, why "mAh" does not (it's assumed based on the standard voltage of the particular battery type). mWh is the better number to use when trying to compare energy capacity, kind of like the size of a gas tank. You can calculate the mWh of 18650 lithium-ion batteries by multiplying the mAh by 3.7 (that's the standard voltage of those types). There are some LiFePO4 types and for those you would multiply by 3.2.

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            • #7
              sonofeugene
              Veteran Member
              • Oct 2013
              • 4286

              Originally posted by WalterJones
              Maybe someone here can enlighten...why are these rechargeable lithium batts rated in MwH when other lithium like 26650 and 18650 are rated in MaH? Amd how do you compare MwH to MaH?
              Because, if you use watts, the number is much larger so it appears as if your getting higher capacity but you aren't.
              Let us not pray to be sheltered from dangers but to be fearless when facing them. - Rabindranath Tagore

              A mind all logic is like a knife all blade. It makes the hand bleed that uses it. - Rabindranath Tagore

              Talent hits a target no one else can hit. Genius hits a target no one else can see. - Arthur Schopenhaur

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              • #8
                oktavist
                Member
                • Aug 2015
                • 391

                Wow, those aren't even really batteries.... It's a usb power bank in the shape of a D-cell. Lithium can't produce 1.5 volts. They should print "anti-gravity-battery" on the side too...
                Calguns Lurker

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                • #9
                  oktavist
                  Member
                  • Aug 2015
                  • 391

                  10 watts hours might be possible since running at such a low voltage. Assuming the battery pack runs internally at 4.2 volts, that puts it in roughly the 2000mAh range. Of course the buck circuit to drop the voltage from 4.2 to 1.5 may be as low as 60% efficient so you might get 1 amp out...
                  Calguns Lurker

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                  • #10
                    oktavist
                    Member
                    • Aug 2015
                    • 391

                    Of course the real question, is why. You can get D-cell NiMH with 10 times the capacity for half the price on the same website...
                    Calguns Lurker

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                    • #11
                      Citizen_B
                      Senior Member
                      • Mar 2014
                      • 1429

                      Originally posted by oktavist
                      Of course the real question, is why. You can get D-cell NiMH with 10 times the capacity for half the price on the same website...
                      EBL NiMH D-cells are 12,000 mWh for $5.66/cell. The Li-ion D-cell is 10,000 mWh for $12/cell.

                      Comment

                      • #12
                        oktavist
                        Member
                        • Aug 2015
                        • 391



                        10,000 milli-AMP-hours
                        Last edited by oktavist; 10-14-2020, 1:09 PM.
                        Calguns Lurker

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                        • #13
                          Citizen_B
                          Senior Member
                          • Mar 2014
                          • 1429

                          Yes, and when you convert 10,000 mAh to mWh, it's 12,000. NiMH batteries use a standard voltage of 1.2V.

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                          • #14
                            gorn5150
                            Senior Member
                            • Aug 2007
                            • 1453

                            I bought some of the AA one a few months ago to check them out. They seem to be fine other than having a lower storage rating. They run Blink cameras that normal rechargeables won't run.

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                            • #15
                              sonofeugene
                              Veteran Member
                              • Oct 2013
                              • 4286

                              I was wondering how you get 1.5 volts out of a 4.2 volt lithium ion battery.
                              Let us not pray to be sheltered from dangers but to be fearless when facing them. - Rabindranath Tagore

                              A mind all logic is like a knife all blade. It makes the hand bleed that uses it. - Rabindranath Tagore

                              Talent hits a target no one else can hit. Genius hits a target no one else can see. - Arthur Schopenhaur

                              Comment

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