Hey all
A little about myself, I have been building my powerwall for quite some time at them moment, and have managed to find a reliable cell supply, at the time of this writting I have around 3500 cells which I plan to use in a 20kw powerwall I am in the process of building
I have built an initial powerwall in a 7s80p configuration and a few other packs which are used for several purposes
I have 8 310 Silfabsolar panels which are setup in my roof which I have in a 2s4p configuration
I have purchased a few months ago a Esmart3 60A solar charge controller which appeared to work very well with a 12v lead acid battery but it has not been very kind to me after connecting my lithium 7s bank, here is what I have found:
1) Voltage reading from the battery is off by 2.6v (lower, 28.6v reading would show as 26v) when the voltage is between 23v and 28v (quite a nuisance, however tolerable)
2) This is my biggest issue because it is potentially very dangerous is that it will NOT change from constant current to constant voltage, it continues dumping power into the battery as if it did not reach the final voltage setup in the "user defined" battery
I have setup the solar charge controller through the android based software which is somewhat useful, please see in the my screenshot the settings for my 7s battery pack,
Has anyone had this before and has any ideas in how to correct these issues?
**Please note Charge voltage has the 2.6v offset
Any help would be appreciated
A little about myself, I have been building my powerwall for quite some time at them moment, and have managed to find a reliable cell supply, at the time of this writting I have around 3500 cells which I plan to use in a 20kw powerwall I am in the process of building
I have built an initial powerwall in a 7s80p configuration and a few other packs which are used for several purposes
I have 8 310 Silfabsolar panels which are setup in my roof which I have in a 2s4p configuration
I have purchased a few months ago a Esmart3 60A solar charge controller which appeared to work very well with a 12v lead acid battery but it has not been very kind to me after connecting my lithium 7s bank, here is what I have found:
1) Voltage reading from the battery is off by 2.6v (lower, 28.6v reading would show as 26v) when the voltage is between 23v and 28v (quite a nuisance, however tolerable)
2) This is my biggest issue because it is potentially very dangerous is that it will NOT change from constant current to constant voltage, it continues dumping power into the battery as if it did not reach the final voltage setup in the "user defined" battery
I have setup the solar charge controller through the android based software which is somewhat useful, please see in the my screenshot the settings for my 7s battery pack,
Has anyone had this before and has any ideas in how to correct these issues?
**Please note Charge voltage has the 2.6v offset
Any help would be appreciated