H56C Coulombmeter H56C Coulombmeter for LiFePo4 battery

About using the H56C Coulombmeter for LiFePo4 battery.

[@evil17]

Good job, thanks for doing this review

[@deanrivera100]

Thank You.

[@NealORussa]

Great video on the meter! I want to see how far your cart goes!

[@johnshaw5978]

FYI, the sensor is not a coil as you assumed. Current transformers used on AC consist of coils but aren't useful on DC. What you have is a semiconductor Hall Effect sensor. This sits in a flux gap in a toroidal core where the magnetic field caused by current in your battery cable changes the sensor conductivity. The other alternative for DC current measuring is a resistive shunt resistor in series with the battery.

[@deanrivera100]

I figured since the current sensor was round that it had a coil of wire inside. A toroidal core with an IC makes more sense to measure current flow. Thanks.

[@Carlo15199]

Hi Dean, I bought a H56C Coulomb Meter and it works fine. My question is: is it possible to keep the display on all the time? Normally it turns off after a certain time. I haven't found any instructions for this setup. Thank you. Carlo

[@deanrivera100]

The only way I know to turn on the backlight is to press the setup button. It needs 0ver 5mA to stay on., the press of the setup button provides this for about 10 seconds then turns off, there probably is a small capacitor inside that determines how long the backlight stays on. If you can find that capacitor and short it out that may keep the backlight on.

[@Carlo15199]

Thank you for your answer. I need to ask you another question regarding setup. On the display I always have the battery icon moving (values from 0 to 100) and the capacity percentage icon always at zero. I need to check a 200AH lifepo4 battery. I set the following parameters on the H56C Coulombmeter: 01ZV = 46v, 11CA = 200Ah, 12FV = 56.4v. I think I didn't setup correctly. Can you help me? Thank you Carlo

[@electronistul]

Hello, can you confirm that the coulombmeter function does what I think it does, namely: During the life of a battery 1-10 years (whatever it is) it charges and discharges, the coulombmeter function measures what current comes out and what current comes in (subtracts and adds - averages, etc.) then results (normally after several cycles, not instantly) the capacity in Ah of the battery. Let's say we have a 100Ah battery and I cycle it 20-80%, the coulomb meter should show me after some time a capacity of 60Ah (ideal). If we reduce the losses, I think somewhere around 55-59Ah. This is true ? Does it do what I think?

[@deanrivera100]

I am not sure what you mean by cycling the battery 20-80%. If you mean run the battery down to 20-80% before recharging back to full, then the battery should always charge back to full Ah the battery is rated at. I am no expert but I believe the columbmeter works off the hall effect principle and measures current flow. So as long as you use your charger and fully charge the battery and your battery meter shows 100% when the battery is finished charging. All your settings on the meter are correct. After the first charge is done ,press and hold the top arrow button till the meter shows 100%. the meter is now calibrated to your battery based on the settings. Hope this info helps and my videos on the meter help as well.

[@electronistul]

​@@deanrivera100 ok so you don't know what I asked. I order 3 pcs from aliexpress and I will test them.

[@deanrivera100]

@@electronistul enjoy the batteries.

[@jochemmooij7300]

hello, where can i find manual from the coulombmeter? thanks for sharing

[@deanrivera100]

The manual can be found when you search for the meter on google, Amazon or Aliexpress.