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electrical:12v:diysmartpass [2023/06/23 15:14] frater_secessus [20A combo DC-DC + diode isolator: $173] |
electrical:12v:diysmartpass [2023/06/23 15:18] frater_secessus [20A DC-DC + 20A DC-DC + 20A solar controller + diode isolator: $192-$253] |
- drop of ~0.5v. Perhaps not a big issue since the DC-DC is boosting. | - drop of ~0.5v. Perhaps not a big issue since the DC-DC is boosting. |
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* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3T9JKft|Cole-Hersee 90A diode isolator]], $69. | * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3T9JKft|Cole-Hersee 90A diode isolator]], $69. |
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==== 20A combo DC-DC + MOSFET isolator: $224 ==== | ==== 20A DC-DC + MOSFET isolator: $224 ==== |
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Same technology as the Smartpass. | Same technology as the Smartpass. |
Similar to the diode isolator setup above, but with MOSFETS instead of diodes. This means no((or minimal)) voltage drop. | Similar to the diode isolator setup above, but with MOSFETS instead of diodes. This means no((or minimal)) voltage drop. |
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* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3wnJpfE|Victron ArgoFET 200A isolator]] (100A for each "leg", so both starter and house batt get ≤100A). $120. | * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3wnJpfE|Victron ArgoFET 200A isolator]] (100A for each "leg", so both starter and house batt get ≤100A). $120. |
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The main benefit of a separate MPPT is we get to normal PV input limits, 100v+. We also may have more control. One can also drastically reduce cost by using PWM with nominal 12v panels, or using MPPT with cheap used higher-voltage panels. | The main benefit of a separate MPPT is we get to normal PV input limits, 100v+. We also may have more control. One can also drastically reduce cost by using PWM with nominal 12v panels, or using MPPT with cheap used higher-voltage panels. |
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* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3Aj7NjP|EpEver 20A 100v MPPT]], $80. [[https://amzn.to/3QGwihC|Cole-Hersee continuous duty solenoid]], $55. [[https://amzn.to/3AhdNti|High voltage disconnect]], $13. | * MPPT |
* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3PMlFIS|HQST 20A PWM]], $19. [[https://amzn.to/3QGwihC|Cole-Hersee continuous duty solenoid]], $55. [[https://amzn.to/3AhdNti|High voltage disconnect]], $13. | * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3Aj7NjP|EpEver 20A 100v MPPT]], $80. |
| * [[https://amzn.to/3QGwihC|Cole-Hersee continuous duty solenoid]], $55. |
| * [[https://amzn.to/3AhdNti|High voltage disconnect]], $13. |
| * PWM |
| * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3PMlFIS|HQST 20A PWM]], $19. |
| * [[https://amzn.to/3QGwihC|Cole-Hersee continuous duty solenoid]], $55. |
| * [[https://amzn.to/3AhdNti|High voltage disconnect]], $13. |
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==== 20A DC-DC + 20A DC-DC + 20A solar controller + diode isolator: $192-$253 ==== | ==== 20A DC-DC + 20A solar controller + diode isolator: $192-$253 ==== |
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* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3Aj7NjP|EpEver 20A 100v MPPT]], $80. [[https://amzn.to/3T9JKft|Cole-Hersee 90A diode isolator]], $69. | * MPPT |
* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3PMlFIS|HQST 20A PWM]], $19. [[https://amzn.to/3T9JKft|Cole-Hersee 90A diode isolator]], $69. | * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3Aj7NjP|EpEver 20A 100v MPPT]], $80. |
| * [[https://amzn.to/3T9JKft|Cole-Hersee 90A diode isolator]], $69. |
| * PWM |
| * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3PMlFIS|HQST 20A PWM]], $19. |
| * [[https://amzn.to/3T9JKft|Cole-Hersee 90A diode isolator]], $69. |
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