Forum Discussion
landyacht318
Jun 26, 2016Explorer
Guessing what the smart charger is trying to do at the moment can drive a person insane.
generally if the battery is fully charged, not much current will be required to reach absorption voltage, the charger 'should' be able to sense this low current to hold ABsv requirement, hold it only so long and then drop to float voltage.
I got so sick of My schumacher, and trying to guess what the Eff it was attempting to do, I pestered this forum until mex brough up the possibilities of an adjustable power switching power supply.
Now I know what voltage the charging source seeks, i determine how long it is to be held, and I have the tools and experience to tell me how long it is to be held, and can basically fairly accurately geustimate a state of charge based on how many amps the battery is accepting at the voltage at the battery terminals.
When I bust out the Schumacher now, with these measuring tools and experience, well Sometimes i want to swing the Schumacher around by its power cord round and round with increasing speed until it meets an object which can't move.
Actually it is OK, when I use the AGM setting as it will not goto 16.4 volts, and it will hold mid 14v for longer than it will on the regular to deep cycle settings, and it floats at 13.6v and works OK as a power supply in float as long as the loads are not huge and switched on and off.
But the bell and whistle 8 stage chargers with included neck massager, who knows what the EFF they are trying to do at any given point on any given battery at any state of charge.
generally if the battery is fully charged, not much current will be required to reach absorption voltage, the charger 'should' be able to sense this low current to hold ABsv requirement, hold it only so long and then drop to float voltage.
I got so sick of My schumacher, and trying to guess what the Eff it was attempting to do, I pestered this forum until mex brough up the possibilities of an adjustable power switching power supply.
Now I know what voltage the charging source seeks, i determine how long it is to be held, and I have the tools and experience to tell me how long it is to be held, and can basically fairly accurately geustimate a state of charge based on how many amps the battery is accepting at the voltage at the battery terminals.
When I bust out the Schumacher now, with these measuring tools and experience, well Sometimes i want to swing the Schumacher around by its power cord round and round with increasing speed until it meets an object which can't move.
Actually it is OK, when I use the AGM setting as it will not goto 16.4 volts, and it will hold mid 14v for longer than it will on the regular to deep cycle settings, and it floats at 13.6v and works OK as a power supply in float as long as the loads are not huge and switched on and off.
But the bell and whistle 8 stage chargers with included neck massager, who knows what the EFF they are trying to do at any given point on any given battery at any state of charge.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,191 PostsLatest Activity: Jan 19, 2025