Hello all, first post ot this forum.
I have been tackling a PV system that is a little backwards from the standard design approach.
I have a weekend getaway/ hunting cabin in Southern Ohio. My needs are to have power while there for 2 to 5 days, then I may be gone for weeks on end. What I am doing now is I haul with me a 80Ah D-S marine battery and hook it up to a 400W inverter to run the lights. This will run 1 to 2 CFL for 3 days and then I haul it home and charge on my home battery charger hooked to the grid.
I would like to set up a battery bank that will provide the power I need to run my lights and a few other items for 3 to 5 days. Then when I am gone let a PV panel recharge them over X days. This could be 5 days or 14, I have not decided. During this time there will be no load.
Traditional design covers designing the battery bank. (Ah * 5 days vs. Ah capacity of the batteries (including derates, and discharge %))
Where I am at a loss is I do not need an array that needs to provide for direct power consumption. i.e. an array that will provide 1000 watts.
I am interested in the thin film amorphous PV attached to a MPPT regulator to capture the higher volts/watts supply the 12V or 24V battery bank. Another option is a single 20w 30W or so panel that can directly supply a PWM regulator or so.
I am not sure how to calculate recharge time, or what combo to put in place.
Are there any guides on this type of system?
I need to keep install costs down as there is a potential for theft if the components are too nice.
Thank you for your input.
I have been tackling a PV system that is a little backwards from the standard design approach.
I have a weekend getaway/ hunting cabin in Southern Ohio. My needs are to have power while there for 2 to 5 days, then I may be gone for weeks on end. What I am doing now is I haul with me a 80Ah D-S marine battery and hook it up to a 400W inverter to run the lights. This will run 1 to 2 CFL for 3 days and then I haul it home and charge on my home battery charger hooked to the grid.
I would like to set up a battery bank that will provide the power I need to run my lights and a few other items for 3 to 5 days. Then when I am gone let a PV panel recharge them over X days. This could be 5 days or 14, I have not decided. During this time there will be no load.
Traditional design covers designing the battery bank. (Ah * 5 days vs. Ah capacity of the batteries (including derates, and discharge %))
Where I am at a loss is I do not need an array that needs to provide for direct power consumption. i.e. an array that will provide 1000 watts.
I am interested in the thin film amorphous PV attached to a MPPT regulator to capture the higher volts/watts supply the 12V or 24V battery bank. Another option is a single 20w 30W or so panel that can directly supply a PWM regulator or so.
I am not sure how to calculate recharge time, or what combo to put in place.
Are there any guides on this type of system?
I need to keep install costs down as there is a potential for theft if the components are too nice.
Thank you for your input.
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