Multimeter Upgrade on Li-ion Battery With Charging From USB

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About: just do it yourself

How do i upgrade a multimeter

Step 1: All the Things You Need

  • Li-ion battery. 18650:

http://ali.pub/22bdhq or http://ali.pub/22bdjo . Other sizes: http://ali.pub/22bdmz or http://ali.pub/22bdnk

Step 2: If You Use a Charging Board With Protection, Use This Picture.

Step 3: Without Protection Will Look Like This.

Step 4:

Now you can throw away the 9-volt battery.

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    5 Discussions

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    Samuel Budiyanto

    12 days ago

    You must be careful, boost converter have an ripples voltage and if you not taming the ripple in high frequencies, many measuring will fail or give a false measure.
    I made it, but keep in the mind first; always put 100uH and rectify with 100nF + 100uF before the voltage come to the Multimeter.
    False reading comes when we driving microchips with bad input voltage (ripples in high frequencies).

    Greetings
    INDONESIA

    0
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    GayatriA3

    11 months ago

    if we try to use 2 bms in series for some specifications, then how do i make connections?

    1 reply
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    rcs-al

    11 months ago

    How much current does the dc-dc converter drain on idle when the multimeter is off?

    1 reply
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    18650Factorrcs-al

    Reply 11 months ago

    close to 0 ,my multimeter could not measure it. If you worried about it, you can put the switch in the circuit break