Hello,
Eternal absortion approach comes from the fact that some people believe charge controllers (CC) don't allow enough time for the absortion stage to be 100% complete when charging a battery with solar, some CC come with preset time for absortion, say 120 minutes, 3 hours, etc., some CC don't say how they know it's time to end absortion and switch to float.
The common thought is that when the current charging a battery get as low as 0,5% the amps hour of the battery (0,5amps for a 100Ah battery), it's time to end absortion and switch to float stage, and to reach that 0,5% can took easily 5 hours of solar charging, meaning most of the time there's not enough solar hours to get there.
Thinking about this, some people say that, as long as your battery is cycled daily, it's safe to make Vabs=Vfloat, making in fact absortion stage last until sun goes down, this is called "eternal absortion".
Do you think this is worth a try? I'm thinking about setting my CC to Vabs=Vfloat=14,4V in winter and 14,2V in summer, what do you think? thanks in advance.
Eternal absortion approach comes from the fact that some people believe charge controllers (CC) don't allow enough time for the absortion stage to be 100% complete when charging a battery with solar, some CC come with preset time for absortion, say 120 minutes, 3 hours, etc., some CC don't say how they know it's time to end absortion and switch to float.
The common thought is that when the current charging a battery get as low as 0,5% the amps hour of the battery (0,5amps for a 100Ah battery), it's time to end absortion and switch to float stage, and to reach that 0,5% can took easily 5 hours of solar charging, meaning most of the time there's not enough solar hours to get there.
Thinking about this, some people say that, as long as your battery is cycled daily, it's safe to make Vabs=Vfloat, making in fact absortion stage last until sun goes down, this is called "eternal absortion".
Do you think this is worth a try? I'm thinking about setting my CC to Vabs=Vfloat=14,4V in winter and 14,2V in summer, what do you think? thanks in advance.
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