Hi, welcome to a video tutorial from Robojax. my name is Ahmad Shamshiri. in this review
we are going to test and see how we can use this XH-M603 charge control module
for lead Acid battery. so you can connect your charger or solar panel
to charge a lead acid battery let's get started with this.
the module is sold for around $9.29 or 10 depending where you buy it from and here on
Aliexpress if you search xhm 603 you will get tons of these stores that are selling this.
Also it's sold to different prices on Amazon.com and here on Amazon Germany
also it's it's sold for eight dollars it's sold sorry for eight euro or six thirty euros
with different prices. however the module that i received is hw632 so it seems that somebody has
copied this and everybody is just producing it the shape everything is the same except this text here.
Warning! This module cannot control the amount of current (Ampere) to the battery. You need separate charger to control the current
This can only control the voltage to connect to charge the battery or disconnect it
Now let me explain the module and then I’m going to go show you each component through their
data sheet. so the module will be connected the charger will be connected at this point
either you have a generator, solar panel, whatever or wall charger it will be connected
here and your battery will be connected at these two terminals. Now how it is connected. you have
a charger or a generator the dc voltage or solar panel will be connected at these two terminals
and your battery will be connected here. And this is a diagram. let's say this was an AC
charger so that you will connect your AC power at this point and this is the charger we'll have DC.
As you can see the negative is coming and go going directly to the battery
and the positive is coming through the relay. And the relay will disconnect it and connect it based
on the start and stop setting value that you set on the screen. The current comes and passes here
for charging. now let's turn this around so we can see. as you can see the two middle pins are
connected so this negative from charger comes and exits immediately. so that's the positive that
goes through and exits back here. the positive this one this pin goes to the relay and relay will
turn on and relay we connect this to the battery. these two terminals the battery can be let's say
12 volts or 24 volts whichever battery you have. the voltage comes here it goes to this regulator.
this is LM2596 this is a simple switcher 3mp step down converter.
you can set the value for the output with some configuration here has been adjusted so we
always get uh 12 volts at the output so if you get 24 volts you will get still 12 volts.
if you get 12 point something you will get 12V but anything below 12V will slowly be reduced.
then the voltage from this pin 2 comes here this is the AMS1117 and they have
1.5 1.8 2.5 3.3- and 5-volts version. and this is the 5 volts version. and it outputs five volts.
from this five volts this microcontroller will power up and also this display .
so we always have five volts for this available even the voltage goes 10 volts or below the 12
whatever it is so up to maybe 6 volts we will always have 5 volts here. so this module will
always function. this is the microcontroller this is the stm8 series microcontroller STM8S003F3.
and we're not worried about it. I will provide you the link for this data sheet.
because we are not programming it. manufacturers for other purpose they also left here some pins
so it can be programmed but we are not going to program it because we do know how all these things
will function. so it will be useless for us to spend time. here we have one Schottky diode here
there is another Schottky diode. there is another one we have a relay this relay is rated with
10 ampere 120 volts if you are connecting it but because we are connecting it to DC volts
rating of this is very important. you cannot connect higher load. pay attention the version
that you are receiving and make sure that you look at that this dc voltage for this 25 to 16 volts
dc or 24 volt dc and see how much current this can handle if your charger is let's say 20 ampere this
must be 20 ampere otherwise this will uh die and there will be the hazard of fire and so it will
be disaster if this happens. and then we have two push buttons here for the this LED display
this is the lower value (Start) in Chinese and this is the upper (Stop) so this is a start of the voltage
and that's the stop when the this is connected . the length of the module is 82 millimeters
width is 50 to 58.2 millimeters depth of the module is 19.6 millimeters
Settings of the module
this page is from E-Marina systems
and they've mentioned for lead Acid battery the state of charge if the battery is fully
charged the voltage would be 12.7V this is not a solid number depending on the model of the
battery it might be a little higher or lower. it might go up to 13 point something but here when
the battery is fully discharged. for this battery dimension at 11.9V so this is your minimum voltage
and here have created this for example for this particular battery of 12 volts lead acid when the
battery is discharged it is 11.6 volts and when it's fully charged the voltage increases from 12
it becomes 13.2 how it works is that when the voltage of the battery is below 11.6 volts.
or lower
the this module will connect your charger or solar panel and the current will pour into the
battery and slowly the voltage will increase to 12 volts. and when it reaches in this particular
battery when it reaches at 13.2V it will turn OFF. so on the board controller we are setting this
start and this stop voltage so when the voltage reaches at this point
it will turn OFF and then it will not turn NO. the voltage will be reduced
slowly so it will wait and when it reaches here. it will turn on so do not think then as soon as it
goes below this it will be turned on. No when it reaches here it will turn OFF and then stays OFF.
when your battery is drained and reaches up to here this will turn ON and then it will turn on.
now let's set our start voltage 11.6 volts this is the third and that's the stop. so first press
and hold it now it blanks this is the increase (push button) this is a decrease (push button) so I can increase it from here
or decreases. so let's go decrease it to 11.6 and then wait until it the blinking stops.
so that is done now. let's go for the stop touch this and then you will see the voltage. so
by touching this you can read the voltage. now hold it and it is blinking so you can
increase with this or decrease by this. if you want to know what is the maximum value
because for the lead acid battery depending on the type of the battery that you set
let's see what is the maximum that we can set so the maximum voltage that you can set is 60 (sorry, the input of the module will not allow above 30V)
so 11.8 is the minimum you cannot set it below that now let me increase it to 13.2
and then wait
now that it is set. by default it always shows the input voltage. once this powers up when
you press this it shows the start voltage if you wait few seconds it will return back.
to the actual voltage of the battery. and then if you press this it will show you the stop voltage
for the battery that you are setting. and if for some reason you want to reset it to the factory
reset mode. once the power is disconnected this is turned OFF hold both of these pressed and then
connect the power and it shows 888 and now it has been resetted
fully. so you can see the start is now 12.5V and stop is 14.5V so this is a factory reset.
for the wiring make sure to connect very thick wires so this can handle up to 60 ampere
so make sure that you have thick wire and this was just for this purpose
absolutely you cannot use this because it should be very thick wire
like this or maybe better. so the there is no loss of power or heat on the on the path.
Demonstration
now let me demonstrate it with a 12 volt lead acid battery. for this particular battery let's
assume that we looked at the data sheet and the discharge voltage is 11.6 volts
and the fully charged voltage of the battery is 13.2V and we are going to set
11.6 for the start of the charge and then the stop will be 13.2V. now to set it
I’m pressing and holding this for the start until it blinks and then increase
and decrease i want 11.6 11.6 just wait until the blinking stops
so the start is set now. for the stop press this and hold it
and the blinks. now increase or decrease so we go 13.2
and wait
this is now the voltage of the battery if i press this
button it says the start voltage 11.6 and you can press this and you see the stop. so at any
moment you can check it. but if you just wait few seconds it shows also the battery voltage.
now it shows the battery voltage is 12.2 volts
and this is the charge and that's the battery let me reduce it so we go 11.6 volts and lower
so the charger will start. now the charger light is off so i will reduce it slowly here
pay attention eleven point so you see there is some discrepancy between that
reading and my reading so it is 11.76 so that's why this is rounding it
so i'm reducing it now that's because this is acting based on this value
now as soon as the voltage was reduced now it is connected the charger is on and it is connected
to the charger because the voltage is coming from the charger it shows now higher voltage
but it will not affect it. now this will keep the charging control going until the voltage reaches
13.2 volts that we set. so this will take time because the current is let's say 10 ampere
and the capacity of the battery now the voltage of the battery will increase as it
receives more current as time passes it will increase until it reaches 13.2
so the voltage now i'm increasing the voltage let's assume
the battery is being filled up slowly so i'm increasing it
because this is connected you will not see it.
yes now slowly you can see it
13 13.2 will turn this off.
so now this is turned off and charger is not connected. i can press it and i can read that.
now pay attention i'm increasing the voltage and c at 13.2 thirteen one
and it turned off at two and jumped quickly. the reason for that is because the charger
was connected. now it's disconnected actual the actual voltage is three point thirteen
point five or maybe i just cranked it higher. but in your actual battery it will work perfectly.
Calculating Charge time and here is how we calculate the charging time
let's say you have a battery uh with a capacity of 90 amp per hour (Ah)
and your charger can charge up to 10 ampere . so the charging time is calculated 90 m per
hour divided by this 10 ampere that current charge so ampere is cancelled with ampere
and then divide this and we have 9h. so in nine hours your battery will be charged.
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Subtitle typed/corrected by Ahmad Shamshiri on Oct 06, 2020 in Canada
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lithium battery charger these are all exactly the same with different shapes current sensing
from this point this is if they will be connected in series so the first cell is
connected to b1 or 3.7 volts i have a module that has constant current and constant voltage