Charged Reviews
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Renogy 12V 40A DC-DC Battery Charger with MPPT (RBC40D1S)
Model: RBC40D1S-G1 · SKU: RBC40D1S-US
Prepared Nov 12, 2026
Common specifications
| Charger input | DC and solar (MPPT)Source [1] |
|---|---|
| Input voltage | Starter battery 7-16 V DC; solar 13-30 V DCSource [1] |
| Solar input voltage | 13 to 30 VSource [1] |
| Solar input limit | 670 WSource [1] |
| Output voltage | Not documented |
| Battery voltage | 12 VSource [1] |
| Charge current | 40 ASource [1] |
| Battery chemistry | Sealed/AGM, GEL, FLOOD, LiFePO4Source [1] |
| Power | 616 WSource [1] |
| Isolated | Not documented |
| Engine detection | IGN Signal Wire (for Smart Alternator)Source [1] |
| Weight | |
| Enclosure volume | 1.39 L** Calculated from recorded external dimensions |
| Warranty term | 2 yearsSource [2] |
All recorded specifications
| Battery chemistry | Sealed/AGM, GEL, FLOOD, LiFePO4Documented claim ConditionsPrinted as "Battery Type Sealed/AGM, GEL, FLOOD, LiFePO4". Location: Section 8, Specifications, Auxiliary Battery Printed as "Battery Type Sealed/AGM, GEL, FLOOD, LiFePO4". Location: Section 8, Specifications, Auxiliary Battery |
|---|---|
| Battery voltage | 12 VDocumented claim ConditionsPrinted as "System Voltage 12V". Location: Section 8, Specifications Printed as "System Voltage 12V". Location: Section 8, Specifications |
| Charge current | 40 ADocumented claim ConditionsPrinted as "Maximum Charging Current 40A". Location: Section 8, Specifications Printed as "Maximum Charging Current 40A". Location: Section 8, Specifications |
| Charger input | DC and solar (MPPT)Documented claim ConditionsPrinted as "Auxiliary Battery Charging Mode MPPT", with "Start Battery Input Specifications" and "Solar Panel Input Specifications" sections; single-model manual (RBC40D1S-G1). Location: PDF page 30, Specifications (General) Printed as "Auxiliary Battery Charging Mode MPPT", with "Start Battery Input Specifications" and "Solar Panel Input Specifications" sections; single-model manual (RBC40D1S-G1). Location: PDF page 30, Specifications (General) |
| Dimensions | 149 W × 48 H × 195 L mm5.87 W × 1.9 H × 7.68 L in convertedDocumented claim ConditionsPrinted as "Dimensions (LxWxH) 195 x 149 x 48 mm / 7.68 x 5.87 x 1.89 inch", read as length, width and height. Location: Section 8, Specifications Printed as "Dimensions (LxWxH) 195 x 149 x 48 mm / 7.68 x 5.87 x 1.89 inch", read as length, width and height. Location: Section 8, Specifications |
| Enclosure | IP31Documented claim ConditionsPrinted as "Enclosure Rating IP31". Location: Section 8, Specifications Printed as "Enclosure Rating IP31". Location: Section 8, Specifications |
| Engine detection | IGN Signal Wire (for Smart Alternator)Documented claim ConditionsPrinted as "4.5. Install a IGN Signal Wire (for Smart Alternator)"; the section adds the wire may instead go to the alternator D+ terminal; single-model manual. Location: PDF page 19, 4.5 Printed as "4.5. Install a IGN Signal Wire (for Smart Alternator)"; the section adds the wire may instead go to the alternator D+ terminal; single-model manual. Location: PDF page 19, 4.5 |
| Input voltage | Starter battery 7-16 V DC; solar 13-30 V DCDocumented claim ConditionsPrinted as "Voltage Range 7V to 16V DC" under Start Battery Input Specifications and "Voltage Range 13V to 30V DC" under Solar Panel Input Specifications. Location: Section 8, Specifications, Start Battery Input and Solar Panel Input Printed as "Voltage Range 7V to 16V DC" under Start Battery Input Specifications and "Voltage Range 13V to 30V DC" under Solar Panel Input Specifications. Location: Section 8, Specifications, Start Battery Input and Solar Panel Input |
| Max efficiency | 93 %Documented claim ConditionsPrinted as "Max Chargering Efficiency 93%" (Renogy's spelling) with no load point or test condition. Location: Section 8, Specifications Printed as "Max Chargering Efficiency 93%" (Renogy's spelling) with no load point or test condition. Location: Section 8, Specifications |
| Maximum input current | 45 ADocumented claim ConditionsPrinted as "Maximum Input Current 45A ±5%" for each input; the tolerance is Renogy's. Location: Section 8, Specifications, Start Battery Input and Solar Panel Input Printed as "Maximum Input Current 45A ±5%" for each input; the tolerance is Renogy's. Location: Section 8, Specifications, Start Battery Input and Solar Panel Input |
| Maximum input power | 670 WDocumented claim ConditionsPrinted as "Maximum Input Power 670W" for the starter battery input and again for the solar panel input. Location: Section 8, Specifications, Start Battery Input and Solar Panel Input Printed as "Maximum Input Power 670W" for the starter battery input and again for the solar panel input. Location: Section 8, Specifications, Start Battery Input and Solar Panel Input |
| Operating temperature | -20 to 45 °C-4 to 113 °F convertedDocumented claim ConditionsPrinted as "Operating Temperature -4°F to 113°F /-20°C to 45°C". Location: Section 8, Specifications Printed as "Operating Temperature -4°F to 113°F /-20°C to 45°C". Location: Section 8, Specifications |
| Other compliance claims | FCC Path 15, Class B, CE, RoHS, SAADocumented claim ConditionsRecorded exactly as Renogy prints it ("Path" is Renogy's spelling). No certificate, test report or issuer record is linked. Location: Section 8, Specifications Recorded exactly as Renogy prints it ("Path" is Renogy's spelling). No certificate, test report or issuer record is linked. Location: Section 8, Specifications |
| Power | 616 WDocumented claim ConditionsPrinted as "Nominal Output Power 616W"; the store page prints "Output Power 616W". Location: Section 8, Specifications Printed as "Nominal Output Power 616W"; the store page prints "Output Power 616W". Location: Section 8, Specifications |
| Solar input limit | 670 WDocumented claim ConditionsPrinted as "Maximum Input Power 670W" under "Solar Panel Input Specifications" (the start-battery section prints the same line); PDF page 13 also says the array must not exceed 670W. Location: PDF page 30, Specifications (Solar Panel Input Specifications) Printed as "Maximum Input Power 670W" under "Solar Panel Input Specifications" (the start-battery section prints the same line); PDF page 13 also says the array must not exceed 670W. Location: PDF page 30, Specifications (Solar Panel Input Specifications) |
| Solar input voltage | 13 to 30 VDocumented claim ConditionsPrinted as "Voltage Range 13V to 30V DC" under "Solar Panel Input Specifications"; single-model manual. Location: PDF page 30, Specifications (Solar Panel Input Specifications) Printed as "Voltage Range 13V to 30V DC" under "Solar Panel Input Specifications"; single-model manual. Location: PDF page 30, Specifications (Solar Panel Input Specifications) |
| Storage temperature | -20 to 60 °C-4 to 140 °F convertedDocumented claim ConditionsPrinted as "Storage Temperature -4°F to 140°F / -20°C to 60°C". Location: Section 8, Specifications Printed as "Storage Temperature -4°F to 140°F / -20°C to 60°C". Location: Section 8, Specifications |
| Weight | 1.2 kg2.6 lb convertedDocumented claim ConditionsPrinted as "Weight 1.2 kg /2.65 lb". Location: Section 8, Specifications Printed as "Weight 1.2 kg /2.65 lb". Location: Section 8, Specifications |
Warranty
| Warranty term | 2 yearsDocumented claim ConditionsPrinted as "2-year material and workmanship warranty" on Renogy's US store page. Location: Store page, specification list Printed as "2-year material and workmanship warranty" on Renogy's US store page. Location: Store page, specification list |
|---|
Certificate records
No records documented.
Sources and revisions
- Renogy 12V 40A DC-DC Battery Charger with MPPT (RBC40D1S-G1) User Manual, Version A0, January 1, 2026Official instruction manual · Revision Version A0 (January 1, 2026) · Checked https://www.renogy.com/cdn/shop/files/RBC40D1S-G1_RENOGY_CORE_40A_Charger__User_Manual_A0_20260101.pdf?v=16586284203971710104
- Renogy US store page: 40A DC-DC Battery Charger with MPPT (October 21, 2026 capture)Official product page · Checked https://www.renogy.com/products/renogy-40a-dc-dc-battery-charger-with-mppt
- Renogy US store product data: 40A DC-DC Battery Charger with MPPT (October 21, 2026 capture)Official product feed · Checked https://www.renogy.com/products/renogy-40a-dc-dc-battery-charger-with-mppt.json