DC-DC charger
Renogy 12V 40A DC-DC Battery Charger (RBC40D1U-G2): 12 V specs and what it works with
The Renogy 12V 40A DC-DC Battery Charger (RBC40D1U-G2) is rated for 40 A of charge output maker spec, about 568 Wh per hour of driving at 14.2 V calculated. That is within the max charge current of 12 of 12 batteries we list. Data updated .
Battery charge-current check
Install and wire it exactly as the maker's manual says; we don't size alternators, cables or fuses. The check compares the charger's rated output with each battery's published max charge current (one battery). See the alternator and DC-DC check.
| Model | Charge current |
|---|---|
| Battle Born BB10012 100Ah 12V | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Battle Born BB10012H 100Ah 12V Heated | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Epoch 12V 100Ah Group 24 | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Epoch 12V 105Ah Heated Bluetooth (Essential) | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Epoch 12V 300Ah Heated Bluetooth Group 31 | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Epoch 12V 460Ah V2 Elite (heated) | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| LiTime 12V 100Ah LiFePO4 | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| LiTime 12V 320Ah Mini Bluetooth | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Redodo 12V 100Ah Ultra Mini Bluetooth (Group 22NF) | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| Redodo 12V 200Ah Plus | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| SOK SK12V100PC 100Ah 12V (Bluetooth) | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
| SOK SK12V206H 206Ah 12V (heated, Bluetooth) | WorksThe DC-DC charger's rated output is within the bank's published max charge current. |
Specs
| output a | 40 maker spec |
|---|---|
| max input a | Not published by the maker |
| efficiency pct | 94 maker spec |
| engine run detect | Not published by the maker |
| ignition input | true maker spec |
| profiles | SLD/AGM, FLD, GEL, LI (LFP), USER maker spec |
| input v › min | 9 maker spec |
| input v › max | 16 maker spec |
| lithium v › absorption | 14.4 maker spec |
| lithium v › float | Not published by the maker |
| mppt | Not published by the maker |
| nominal v | 12 maker spec |
Compared side by side: Renogy DC-DC 40A vs Victron Orion XS
Notes on the sources
From Renogy's RBC20D1U/RBC40D1U-G2 manual (second column = 40A model). The LI (LFP) boost default is the fourth figure in the voltage table; float is not applied to lithium. Renogy lists maximum input power as 600W @ 40A.
In the maker's words
“IGN signal wiring is required for smart alternators only.” (smart alternator quote; source)
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See it at the maker for Renogy 12V 40A DC-DC Battery Charger (RBC40D1U-G2)Sources
- www.renogy.com (nominalV; spec), read
- www.renogy.com (outputA; spec), read
- www.renogy.com (inputV.max, inputV.min; spec), read
- www.renogy.com (efficiencyPct; spec), read
- www.renogy.com (ignitionInput, smartAlternatorQuote; spec), read
- www.renogy.com (profiles; spec), read
- www.renogy.com (lithiumV.absorption; spec), read