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--- electrical:12v:b2b [2021/06/18 18:57]
frater_secessus [gotchas]
+++ electrical:12v:b2b [2021/06/25 10:43]
frater_secessus [Renogy]
@@ Line 93: / Line 93: @@
 [[https://amzn.to/2QYuswm|{{ https://m.media-amazon.com/images/I/41B+GcTmbyS._AC_UY218_.jpg?125}}]]
-  * DCC50S [[https://amzn.to/2QYuswm|50A model with MPPT charging]]. MPPT input limited to 25v.((per the manual)) - [[https://www.renogy.com/content/RBC50D1S-G1/RBC50D1S-G1-Manual.pdf|manual]] (pdf)  Total output is limited to 50A from either independent source (see below).
+  * DCC50S [[https://amzn.to/2QYuswm|50A model with MPPT charging]]. MPPT input limited to 25v.((per the manual)) - [[https://www.renogy.com/content/RBC3050D1S-G1/RBC3050D1S-Manual.pdf|manual]] (pdf)  Total output is limited to 50A from either independent source (see below).
 Note:  a [[https://amzn.to/3fSFDD2|30A combo model]] is also available
@@ Line 115: / Line 115: @@
 [[https://www.renogy.com/content/RBC3050D1S-G1/RBC3050D1S-Manual.pdf|Behavior is the same for the 30A model]] (pdf) except 15A + 15A //vs// 25A + 25A above.
+=== starter battery maintenance behavior ===
+> If the service battery is in float charge stage, the starting battery will be charged at the same time. The charging voltage is limited at 13.8V. The charging amperage is limited at 25A.((https://www.renogy.com/content/RBC3050D1S-G1/RBC3050D1S-Manual.pdf))
 ==== Kisae ====
 [[https://amzn.to/3fWJtbH|{{ https://m.media-amazon.com/images/I/81Hke9PigbL._AC_UL320_.jpg?125}}]]
@@ Line 129: / Line 131: @@
 When the alternator input terminals detect at least 13.2v the charger will be switched to alternator charging.((trigger wire allows use of smart alternators))
+==== Redarc ====
+Redarc "dual input" DC-DC chargers have integrated MPPT controllers. They appear to do both buck and boost conversion as solar input voltage is 9v-32v.((https://www.redarc.com.au/Content/Images/uploaded/Manuals/BCDC%20Dual%20Input%20Instruction%20Manual.pdf))
+[[https://amzn.to/2TLGhtv|{{ https://m.media-amazon.com/images/I/71CqS887T8L._AC_UL320_.jpg?125}}]]
+  * [[https://amzn.to/3iZY3Uw|BCDC1225D]] - 25A
+  * [[https://amzn.to/2TLGhtv|BCDC1240D]] - 40A
+  * [[https://amzn.to/3zFgmUZ|BCDC1240D]] - 50A
+=== solar+alternator behavior ===
+> The unit will always take as much power from the unregulated Solar input as it can before supplementing that power, up to the maximum rated output, from Vehicle power input((https://www.redarc.com.au/Content/Images/uploaded/Manuals/BCDC%20Dual%20Input%20Instruction%20Manual.pdf)),((https://www.redarc.com.au/Content/Images/uploaded/BCDC1250D%20Instruction%20Manual.pdf))

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