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--- electrical:12v:b2b [2024/03/31 14:57]
frater_secessus [Renogy] 50%, not 12.5%, wtf
+++ electrical:12v:b2b [2024/05/17 11:40] (current)
frater_secessus [Renogy]
@@ Line 147: / Line 147: @@
 === RBC series ===
+NOTE:  there are two distinct versions of the RBC line.  Both appear to have PV input limits higher than 25v found in the older DCC line.  Major differences appear to be:
+  * DS - built-in Bluetooth, support for both 12v/24v banks.  New case.
+  * D1S -  no built-in Bluetooth, 12v banks only.  Uses traditional DCC case.
+== RBC2125DS ==
+{{ https://cdn11.bigcommerce.com/s-fhnch/images/stencil/640w/products/2063/26190/1__10088.1706872952.jpg?125}}
 Note:  some manual versions brand this unit as part of the "Rego" line.
-The [[https://www.renogy.com/renogy-12v-24v-ip67-50a-dc-dc-battery-charger-with-mppt/|RBC series 50A charger]] has a 50V PV input limit and built-in bluetooth.  It can also boost 12v panel voltage to charge 24v banks.  A RBC30 is reported to exist.
+This version is for both **12v and 24v banks**.
+The [[https://www.renogy.com/renogy-12v-24v-ip67-50a-dc-dc-battery-charger-with-mppt/|RBC series 50A charger]] has a 50V PV input limit and built-in bluetooth.  It can also boost 12v panel voltage to charge 24v banks.
-The existing [[https://store-fhnch.mybigcommerce.com/content/RBC2125DS-21W/Manual_RENOGY%2012V%2024V%2050A%20Battery%20Charger-2.pdf|manual]] is minimal and specs/behavior are largely undocumented as of Jan 2024.
+>> Ensure that the open circuit voltage of the solar panel/solar panel array does not exceed 50V
+Update:  [[https://store-fhnch.mybigcommerce.com/content/RBC2125DS-21W/Manual_RENOGY%2012V%2024V%2050A%20Battery%20Charger-2.pdf|the manual]] has been updated.
 == solar+alternator behavior ==
@@ Line 163: / Line 177: @@
+== RBC30D1S and RBC50D1S ==
+The D**1**S series appears to be a DCC charger with higher PV input limits:
+>> For [the] 30A battery charger, ensure that the working voltage of the solar panel / solar panel array does not exceed **30V**. For [the] 50A battery charger, ensure that the working voltage of the
+solar panel / solar panel array does not exceed **50V**.
+[[https://www.renogy.com/content/RBC3050D1S-G1/RBC3050D1S-Manual.pdf|manual]]
@@ Line 213: / Line 234: @@
 This unit also seems to be sold under the Ring and Merlin brands.
+==== LiTime ====
+{{ https://m.media-amazon.com/images/I/71UNjnxThrL._AC_UL320_.jpg?125}}
+LiTime makes [[https://amzn.to/3xHGjq5|a 40A DC-DC/ MPPT combo]] that looks identical to the Redodo below. Specs appear to be the same:
+  * Pv input 13.0v - 26v, max 600w
+  * Alternator Input Voltage 11.3-24VDC, max 600w
+  * Smart Alternator Input Voltage 12-24VDC , max 600w
+=== solar+alternator behavior ===
+According to the Amazon listing:
+> The DC-DC charger will choose the DC input automatically rather than charging the service battery with both the solar and DC inputs
+=== starter battery maintenance behavior ===
+> When the starting battery voltage is between 3-12V and the living battery voltage is greater than 12.5V, press and hold "REVERSE CHARGE" for 3 seconds to start reverse charging. It is recommended to start the battery when the voltage is greater than 13V and exit reverse charging when the charging current is less than 10A or the voltage of the domestic battery is less than 11V.
+==== Redodo ====
+{{ https://m.media-amazon.com/images/I/71PVPwKPJxL._AC_UL320_.jpg?100}}
+Redodo makes [[https://amzn.to/3JhGtqN|a 40A combo DC-DC/MPPT]]:
+  * Pv input 13.0v - 26v, max 600w
+  * Alternator Input Voltage 	11.3-24VDC, max 600w
+  * Smart Alternator Input Voltage 	12-24VDC , max 600w
+No manual located as of this writing.
+=== solar+alternator behavior ===
+unknown
+=== starter battery maintenance behavior ===
+Amazon listing claims "supports reverse charging the starter battery through the service battery".  A seller answer later says:
+> When the starter battery voltage is between 3 to 12V and the service battery voltage is >12.5V, press and hold the “Reverse Charging” for 3 seconds to initiate reverse charging. It’s recommended to exit reverse charging when the starter battery voltage >13V and charging current <10A, or when the service battery voltage <11V.
 ==== SRNE ====

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