Solar and Lifeline
Hi y’all First thanks to all who have tried to help with this project I finally got my Renogy system up and running. 4 -100 watt panels on the roof. 30amp mppt controller, 2000w pure sine wave inve...
Forum Discussion
landyacht318 wrote:
'Wrong batteries for the application'...... just because Lifeline has a detailed charging PDF which says no less than 20% charge current when cycled deeply.
As if this is not applicable to other brands of AGM.
This particular AGM has low internal resistance, it allows charging currents 500% (!). This is not applicable to many, many other AGM. I don't know whether charging current no less than 20% is more important for longevity of the battery with internal resistance lower than in the other brands, but the OP can't utilize features of this battery in his current setup. He has low loads and low charging current (but not too low if he splits the bank).
People buy Lifeline for their boats. I suspect that quality has as much to do with this as 500% max current - they have huge diesels to charge it.
One more thing. "Cycled deeply" (when it would require 20% current) in that PDF manual they interpret as 50% or deeper. It's hard to understand how the OP could discharge 440AH bank that deep with his loads from dusk to dawn. $30 AH monitor could shed some light on this.
(Edit-Correction: his charging current is still below 20% if he splits the bank, unless his controller can charge 6V).
