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electrical:converter [2021/06/19 22:37] frater_secessus [aftermarket converters] |
electrical:converter [2023/10/16 12:19] frater_secessus [choosing a converter] |
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+ | ==== choosing a converter ==== | ||
+ | If money is no object you can buy a multistage (" | ||
+ | * [[electrical: | ||
+ | * 0.2C for FLA | ||
+ | * 0.4C is not LiFeP)4' | ||
+ | |||
+ | |||
+ | === cost === | ||
+ | |||
+ | |||
+ | The higher the rating and the more features the more expensive the shore power charger. | ||
+ | |||
+ | === limits of 15A shore power === | ||
+ | |||
+ | I would limit myself to 13A off a 15A shore power plug, or 1,560w. Assuming 10% conversion losses this would give us a **theoretical max of around 100A of converter charging** (14.4Vabs x 100A). | ||
+ | |||
+ | |||
+ | === minimum | ||
+ | |||
+ | |||
+ | Lead chemistries require a minimum charge rate to stay healthy, and AGM more than the other lead variants. | ||
+ | |||
+ | * 78A for a 390Ah bank (0.2 x 390Ah). | ||
+ | * 39A for a 195Ah half bank, so a 40A converter | ||
+ | |||
+ | |||
+ | === charging time available === | ||
+ | |||
+ | |||
+ | If you have solar and will be on shore power for more than one day then a simple converter that charges at the batteries' | ||
+ | |||
+ | If you do not have solar or will be on shore power for only one overnight then we need a three-stage (" | ||
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* [[http:// | * [[http:// | ||
* [[http:// | * [[http:// | ||
- | * [[http:// | + | * [[http:// |
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==== DIY dumb converters ==== | ==== DIY dumb converters ==== | ||
- | " | + | " |
If loads are run off the converter in the daytime the converter will just be supporting the solar yield and can be rather small. | If loads are run off the converter in the daytime the converter will just be supporting the solar yield and can be rather small. | ||
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* secondary use of charge controller as a spare if needed | * secondary use of charge controller as a spare if needed | ||
+ | Further reading: | ||
+ | * [[https:// | ||
+ | * Owner of Midnite Solar [[https:// |