Here is how I test this board as follows
One I installed new 18650 Panasonic battery I have had a couple years
All batteries had a battery voltage of 3.6-something
Put it on a bench power supply set at one amp worked for about an hour then the balancing board LED started flashing on one battery then on another battery then back off the amperage down to .75 amps then about half hour the same two balancing LED light started flashing again back off the amperage again down to .5 amps 15 minuets later had to back it off again to .3 amps then a couple more came on then one side changed faster than the other side
Because one side of the charges faster than the other side does the charger turned off and charging on both sides stopped
When I put a MR16 light bulb and brought the battery voltage below 4.0 volts the charger started charging again until the battery voltage came back up to 4.0 volts again I had to do this several times before the other side was basically at the same voltage
Then I put the charger rate at .030 amps until all balancing LED lights were all ON and the charger had changed all batteries to 4.0
The next test I going to do is to put a load on this BMS board until the board shuts down the power output then check each battery voltage to see how well it works
To set this board up to work took some work there NO data sheet for this board that I could find
There are three jumper pad under the battery stack that you have to jump together
There is a positive power rail that has to be jumped
There is a two jumpers for two sets of three batteries for each side
There is a jumper to turn on the charging /discharging circuit to turn it ON
One I installed new 18650 Panasonic battery I have had a couple years
All batteries had a battery voltage of 3.6-something
Put it on a bench power supply set at one amp worked for about an hour then the balancing board LED started flashing on one battery then on another battery then back off the amperage down to .75 amps then about half hour the same two balancing LED light started flashing again back off the amperage again down to .5 amps 15 minuets later had to back it off again to .3 amps then a couple more came on then one side changed faster than the other side
Because one side of the charges faster than the other side does the charger turned off and charging on both sides stopped
When I put a MR16 light bulb and brought the battery voltage below 4.0 volts the charger started charging again until the battery voltage came back up to 4.0 volts again I had to do this several times before the other side was basically at the same voltage
Then I put the charger rate at .030 amps until all balancing LED lights were all ON and the charger had changed all batteries to 4.0
The next test I going to do is to put a load on this BMS board until the board shuts down the power output then check each battery voltage to see how well it works
To set this board up to work took some work there NO data sheet for this board that I could find
There are three jumper pad under the battery stack that you have to jump together
There is a positive power rail that has to be jumped
There is a two jumpers for two sets of three batteries for each side
There is a jumper to turn on the charging /discharging circuit to turn it ON
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