6 Comments

I installed this switch to bypass my inverter/charger, should it decide to not function properly. I put jumpers between two poles as this switch is designed for two separate inputs and outputs.

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How about this one?

Akozon Battery Isolator, 300A Battery Switch 3 Position Dual Circuit Power Disconnect Switch Battery Cut Off Isolator for Marine Boat Car RV https://a.co/d/hbEhzlk

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This is the Blue Sea switch I'm using. No 1+2 position to get me in trouble ;)

https://www.amazon.com/dp/B001V7TL10?th=1

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A battery isolator (two diodes) could avoid having to switch the charger.

https://www.amazon.com/Victron-Energy-Battery-Isolators-Batteries/dp/B08L5RRQJR/ref=asc_df_B08L5RRQJR/

I can't help but wonder what is so horrible about connecting them together (maybe with a fuse). When the current from AGM to FLA settles down, the AGM will be at slightly lower than 100% SOC. Not perfectly optimum, maybe a slight cost to cycle life, but what is the damage? One might also switch them together after the AGM is used down to 90%, then the equal voltage can allow reasonable current sharing. I haven't tested this, just speculating and looking for rationale.

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instead of the blue sea battery selector switch would a simple SPDT knife switch work to select one battery bank or the other, but not both?

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