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--- electrical:12v:b2b [2024/02/07 12:02]
frater_secessus [Wagan]
+++ electrical:12v:b2b [2024/05/26 13:54] (current)
frater_secessus [SRNE]
@@ Line 44: / Line 44: @@
 The DC-DC should be big enough to meet your charging targets given the amount of driving you do and the
 contributions of [[electrical:12v:alt_and_solar|other forms of charging]]. It should be small enough that the [[electrical:12v:alternator_details#current|alternator can provide the power continuously]].((Some DC-DC can be derated in the settings in 5A or 10A increments.  IOW, you might run your 50A DC-DC at 35A after observing how the system operates.))  **An oversized DC-DC charger cannot protect the alternator**.
+==== harvest ====
+Ah = Amps x hours.  If your DC-DC charges at 20A and you drive for 2.5 hours it can replace 50Ah (20A x 2.5 hours).
 Note that [[opinion:frater_secessus:charging_faster|bigger is not always better]];  different battery chemistries and capacities accept current at different rates.  Buying more charging capacity than the battery wants((or should have for its own good, see Li below)) is a waste of money. Buying more charging capacity than your alternator can deliver constantly can overheat/damage the alternator.
@@ Line 143: / 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 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.
+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.
+>> 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 159: / 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 171: / Line 196: @@
   * They estimate this will be ~500w of actual input wattage((12v panels)), with [[electrical:solar:overpaneling|overpaneling]] allowed to 600w.
   * supports termination of Absorption by tail current(("L” (Low) parameter"))
+The **lithium charging logic** is charge-and-stop:
+  - Bulk charge up to to the user-defined Absorption voltage at the user-defined current level (5A increments)
+  - hold Absorption voltage until charge current((output really, since it doesn't know what's a load and what's actual charge acceptance)) falls to the user-defined amount of trailing amps.
+  - stop charging
+  - until bank voltage falls to <13.3v
+  - then re-Bulk
@@ Line 177: / Line 210: @@
   * [[https://www.kisaepower.com/wp-content/uploads/2020/04/AbsoCharger_Manual_DMT12V_24V-Series_Rev-D_190612_Print.pdf|manual]]
   * An [[https://www.sportsmobileforum.com/forums/f20/installing-a-kisae-dmt-1250-dc-to-dc-charger-24264.html|extensive write-up]]
+  * [[https://diysolarforum.com/threads/kisae-dmt1250-partial-disassembly-and-remote-disconnect-addition.15454/|teardown]] for modification
   * [[https://diysolarforum.com/threads/has-anyone-used-the-kisae-dmt1250-abso-50a-dc-dc-battery-charger-with-mppt.4402/post-234532|additional solar input information]] from a support email
   * [[https://www.promasterforum.com/threads/kisae-dmt1250-dmt1230-low-temp-cut-off-and-couple-of-advanced-wiring-options.97444/|adding low-temperature charging cutoff]] via E07
@@ Line 191: / Line 225: @@
 === starter battery maintenance behavior ===
-The Kisae does not appear to maintain the starter battery.
+The Kisae does not maintain the starter battery.  However, the manual gives instructions on feeding power to the starter battery when that battery's  voltage is too low:
+>> For DMT1230, 1250 using CH 2 (Solar Array/Panel): Turn unit off. Use a proper jumper to temporary connected CH2 “+” to Ch 1 “+”. Remove the jumper when CH 1 is above the unit start up voltage (8Vdc) and restart the unit.
 === related ===
 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 ====
@@ Line 201: / Line 295: @@
 {{ https://www.srnesolar.com/wp-content/uploads/2020/10/MPPT-Solar-Charging-Controller-MD1250N05-3.jpg?150}}
-SRNE makes [[https://www.srnesolar.com/product/12v-mppt-solar-dc-charging-controller-50a-md1250n05|30A and 50A combo unit]] similar to the Ring and Kisae. Since SRNE makes things that are rebadged by other sellers it is possible they are the original manufacturers.  The BT dongle appears to be the same as the EpEver and Renogy models.
+SRNE makes [[https://www.srnesolar.com/productdetail/DC-DC-Charge-Controller-MD12V.html|30A and 50A combo unit]] similar to the Ring and Kisae. Since SRNE makes things that are rebadged by other sellers it is possible they are the original manufacturers.  The BT dongle appears to be the same as the EpEver and Renogy models.
   * output rating based on solar.  30A will actually do 35A from alternator, 50A will do 60A.
@@ Line 435: / Line 529: @@
+==== Adventure King ====
+{{ https://i.ebayimg.com/images/g/G9QAAOSw7T5kkmoj/s-l1600.jpg?100}}
+AK makes [[https://nz.adventurekings.com/lighting-power/dc-to-dc-chargers/kings-25a-dcdc-charger.html|a 25A combo unit]] with a
+  * 9v-25v PV input limit.((AKEP-DC25A_01 - 25A DC-DC/MPPT Charger))
+  * alternator input 11.9v-25V.  Appears to connect at 12.1v (IGN) or 13.8v (voltage sensing)
+  * manual says for lead batts only, but the "Wet Lead Acid/GEL" profile charges at 14.2v and floats at 13.3V.  Temp compensation seems to be mandatory((encase it in styrofoam?))
+[[https://marketing.4wdsupacentre.com.au/%20manuals/191024%2012V%20DC-DC%20Battery%20Charger%20User%20Manual_V1.6.pdf|manual]]
+=== solar+alternator behavior ===
+no information available
+=== starter battery maintenance behavior ===
+no information available
 ==== CTEK D250 series ====
@@ Line 503: / Line 617: @@
-DC-DC chargers in 20A, 40A, and 60A output.  Switched on by ignition circuit on the D+ port, low output mode (12.5% of rated current) triggered by 12v on a dedicated terminal. ((https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf)) DIP switches for battery type, Vabs and Vfloat. [[https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf|manual]] (pdf) [[https://diysolarforum.com/threads/renogy-dcc1212-dc-dc-charger-teardown.10141/|teardown]]  Note:  some versions of the manual [[https://www.reddit.com/r/vandwellers/comments/okfkuk/my_batteries_inverter_and_dcdc_charger_came_in_i/h5899bw/|may have a typo]].
+DC-DC chargers in 20A, 40A, and 60A output.  Switched on by ignition circuit on the D+ port, low output mode (50% of rated current) triggered by 12v on a dedicated terminal. ((https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf)) DIP switches for battery type, Vabs and Vfloat. [[https://www.renogy.com/content/RNG-DCC1212-20-BC/DCC1212-204060-Manual.pdf|manual]] (pdf) [[https://diysolarforum.com/threads/renogy-dcc1212-dc-dc-charger-teardown.10141/|teardown]]  Note:  some versions of the manual [[https://www.reddit.com/r/vandwellers/comments/okfkuk/my_batteries_inverter_and_dcdc_charger_came_in_i/h5899bw/|may have a typo]].
 These chargers appear to have a 3 hour absorption duration.  This is usually insufficient for lead chemistries, but still longer than the 2 hour duration of the DCC series above.  From the manual:
@@ Line 534: / Line 648: @@
 [[https://amzn.to/3entDrt|{{ https://m.media-amazon.com/images/I/51FNDAIhJeS._AC_UY218_.jpg?125}}]]
-Victron makes several DC-DC chargers, some of which are configurable by bluetooth.  12v examples:
+Victron makes several DC-DC chargers, some of which are configurable by bluetooth ("Smart" units).
+=== Orion-Tr ===
+v examples:
   * Orion-Tr 12|12-20 20A
-  * [[https://amzn.to/3entDrt| Orion-Tr 12|12-30]] 30A
+  * [[https://amzn.to/3entDrt| Orion-Tr 12|12-30]] 30A (most popular model)
 See information on isolated v. non-isolated chargers [[#isolated_chargers|above]].
@@ Line 545: / Line 665: @@
 Be aware [[https://www.cruisersforum.com/forums/f14/dc-dc-charger-mystery-267242-2.html#post3663812|the physical jumpers may have a specific orientation]].
+Orions tend to run hot((and therefore derate)) so mount in an area with sufficient ventilation.
+[[https://www.youtube.com/watch?v=ICYTJhx2AsI|This YT video]] covers Orion configuration in considerable detail.
+=== OrionXS ===
+Differences from the -Tr:
+  * 50A
+  * all models have BT
+  * non-isolated only
+  * adds support for "VE.Smart" networking to receive voltage,  temperature and current information from [[https://amzn.to/3TMRYga|BMV]]  or [[https://amzn.to/498FnIr|SmartShunt]] (voltage and temp only from a [[https://amzn.to/4aoACf1|Smart BatterySense]] since it has no shunt).
+  * supports low-temp charging disconnect as sensed by one of the above sensors
+  * 4awg terminals
+[[https://www.victronenergy.com/upload/documents/Datasheet-Orion-XS-12-12-50A-DC-DC-battery-charger-EN.pdf| data sheet]] (pdf)
 ==== Bogart ====

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