1. Fiosrachadh Sàbhailteachd
Please read all instructions and warnings in this manual carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or severe injury. Keep this manual for future reference.
- Always wear appropriate personal protective equipment, including eye protection, when working with batteries and electrical systems.
- Ensure all connections are tight and secure to prevent loose connections that can cause excessive heat and damage.
- Do not operate the charger in wet or damp cumhachan.
- Dèan cinnteach gu bheil fionnarachadh iomchaidh timcheall air an charger gus casg a chur air cus teasachadh.
- Disconnect all power sources before performing any maintenance or troubleshooting.
- Na feuch ri an charger a thoirt às a chèile no a chàradh thu fhèin. Cuir fios gu luchd-obrach seirbheis teisteanasach.
2. Toradh thallview
2.1 Prìomh fheartan
- Co-chòrdalachd Bataraidh Iom-fhillte: The Renogy DC-DC charger is compatible with multiple alternator types and sub-battery types, including AGM, flooded, gel, and lithium-ion batteries.
- Glic 3-Stage A' cur cosgais: This battery charger charges the sub-battery from the starter battery using a 3-stage charging process (bulk, boost, float), ensuring optimal and automatic 100% charge.
- Main Battery Over-Discharge Protection: The DC-DC battery charger identifies whether the generator is running, preventing over-discharge of the starter battery and protecting the main battery.
- Sàbhailteachd nas fheàrr: Provides over-voltage protection, over-temperature protection, and reverse polarity protection, ensuring safe operation. It also isolates input and output to prevent voltage transmission errors and protect the house battery from overcharging.
- Dealbhadh seasmhach: Features a compact and robust construction for reliable performance.
2.2 Meudan toraidh

The image above shows the Renogy DC-DC Charger with its dimensions: 31.1 cm length, 17.5 cm width, and 6.8 cm height.
2.3 Tuairisgeul Pàirtean

This diagram illustrates the various ports and indicators on the Renogy DC-DC Charger.
| # | Marc | Tuairisgeul |
|---|---|---|
| 1 | Cuir a-steach (+) | Main Battery Positive |
| 2 | Cuir a-steach (-) | Main Battery Negative |
| 3 | Comharra cumhachd | Comharra cumhachd LED |
| 4 | Comharra Mearachd | Error Indicator LED |
| 5 | S1 S2 S3 S4 S5 | Battery Type Setting Switch (DIP Switches) |
| 6 | RJ 11 | Temperature Sensor Connection Port |
| 7 | D+ | Signal Line Connection Port |
| 8 | LC | Current Limit Port |
| 9 | Toradh (+) | Sub-battery Positive |
| 10 | Toradh (-) | Sub-battery Negative |
3. Setup agus Stàladh
3.1 Diagram Ceangail

This diagram illustrates the wiring connections for the DC-DC Charger in a typical RV setup, connecting to both the main (starter) battery and the sub-battery (house battery).
- DC-DC Charger ↔ Main Battery Wiring
- DC-DC Charger ↔ Sub-battery Wiring
- DC-DC Charger D+ Port ↔ Alternator D+ Terminal Wiring
Thoir an aire: All wiring requires separate purchase. Cables are not included with this product; please prepare them separately if needed.
3.2 Roghainnean tionndadh DIP

The image shows the DIP switches used to configure the charger. By operating the 5 switches (S1-S5), you can adjust the battery type and charging voltage.
- S1 and S2: Set Absorption Voltage
- S3 and S4: Suidhich Cìs Float Voltage
- S5: Set Charging Mode
3.3 Taghadh meud càball

Refer to this table for recommended cable sizes and fuse ratings based on your specific DC-DC charger model and cable length.
| Modail | Càball | Meud càball as ìsle | fiùs | |||
|---|---|---|---|---|---|---|
| DC-1212-20 | Prìomh bataraidh | 0.61m 5.5sq | 2.44m 5.5sq | 4.88m 8.0sq | 9.75m 22sq | 30A |
| Fo-bataraidh | 0.61m 3.5sq | 2.44m 3.5sq | 4.88m 5.5sq | 9.75m 14sq | 25A | |
| DC-1212-40 | Prìomh bataraidh | 0.61m 14sq | 2.44m 14sq | 4.88m 22sq | 9.75m 38sq | 60A |
| Fo-bataraidh | 0.61m 8.0sq | 2.44m 8.0sq | 4.88m 14sq | 9.75m 22sq | 50A | |
| DC-1212-60 | Prìomh bataraidh | 0.61m 22sq | 2.44m 22sq | — | — | 90A |
| Fo-bataraidh | 0.61m 14sq | 2.44m 14sq | 4.8m 22sq | — | 75A | |
| D+/LC | 0.75~1.2SQ | |||||
3.4 D+ and LC Ports

The image highlights the D+ and LC ports on the charger.
- D+ Port: Connects to the alternator's D+ terminal for smart alternator detection.
- LC Port: By connecting to the LC port, the charging current can be limited by half. (Recommended cable size: 0.75~1.2SQ)
4. Obrachadh
4.1 3-Stage Pròiseas Cìsean

The graph above illustrates the 3-stage charging process (Bulk, Absorption, Float) that fully charges the battery.
- Mòr-chuid: Charges the battery at the maximum current until it reaches a set voltage.
- Ion-ghabhail: Cosgaisean aig tomhas-lìonaidh seasmhachtage, reducing current as the battery approaches full charge.
- Float: Maintains the battery at a constant, lower voltage to prevent self-discharge.
4.2 Comharran LED
The charger features LED indicators to communicate the charging status and battery type. Refer to the tables below for detailed explanations.
| Comharra Seòrsa Bataraidh | ||
|---|---|---|
| Dath | Inbhe | Tuairisgeul |
| Uaine | ON | SLA (bunaiteach) |
| Buidhe | ON | GEAL |
| Dearg | ON | FLD (Flooded) |
| Gorm | ON | LI (Lithium) |
| Geal | ON | User (Requires BT-2 Module and Renogy DC Home App) |
| Comharra Bataraidh Seirbheis | ||
|---|---|---|
| Dath | Inbhe | Tuairisgeul |
| Uaine | ON | Bataraidh làn |
| Buidhe | ON | Bataraidh voltage àbhaisteach |
| Dearg | ON | Undervol bataraidhtage |
| Dearg | Slaodadh mall | Bataraidh thairis air a leigeil ma sgaoil |
| Dearg | Fastadh luath | Bataraidh thairis air voltage / os cionn teòthachd |
Thoir an aire: Faodaidh an Comharra Cìsean atharrachadh fo na cumhaichean a leanas:
- Dearg gu Buidhe: When the voltage a ’ruighinn 12.2V fo voltage faighinn seachad air.
- Buidhe gu Dearg: When the voltagbidh e a ’tuiteam gu 12.0V fo voltage rabhadh.
- Buidhe gu Uaine: A. Nuair a ruigeas e seasmhach voltage staid cosgais, tha an sruth cosgais nas lugha na 3A, mairidh e 30 diogan; B. Nuair a tha an sruth cosgais nas àirde na 3A, bidh e a’ cumail cosgais gus an ruig e cunbhalach voltage stàite agus na sruthan a ’tuiteam fo 3A, a’ mairsinn 30 diogan.
| Alternator / Comharra Cìsean | ||
|---|---|---|
| Dath | Inbhe | Tuairisgeul |
| Uaine | ON | Tha Alternator a ’cur cosgais air bataraidh na seirbheis |
| Dearg | Slaodadh mall | Tha PV a ’cur cosgais air a’ bhataraidh tòiseachaidh |
| AIRSON | Gun a bhith a’ cur cosgais | |
4.3 Alternator Type and Starting Battery Voltage
| Seòrsa Alternator | Starting Battery Voltage | |
|---|---|---|
| Gearr-a-steach | Gearr-dheth | |
| Alternator traidiseanta | >13.2V, for 15 seconds | <12.7V |
| Alternator glic | >12.0V, for 15 seconds | <11.5V |
4.4 Charging Current Distribution (Solar + Alternator)
| Modail | RBC30DIS | RBC50DIS |
|---|---|---|
| Solar a-mhàin | 30A | 50A |
| Only Alt | 30A | 50A |
| Solar + ALT | 15A + 15A | 25A + 25A |
When using both solar and alternator inputs, the current is split. For example, the RBC30DIS model will provide 15A from solar and 15A from the alternator, totaling 30A.
5. Cumail suas
Regular maintenance ensures optimal performance and longevity of your Renogy DC-DC Charger.
- Periodically check all wiring connections for tightness and corrosion. Clean any corroded terminals.
- Inspect the charger for any physical damage or signs of overheating.
- Ensure the area around the charger is free from dust and debris to maintain proper ventilation.
- Verify that the battery type settings are correct for your installed batteries.
6. A ’dèanamh trioblaid
If you encounter issues with your DC-DC Charger, refer to the following basic troubleshooting steps:
- Gun chumhachd/LEDs dheth: Check all battery connections and fuses. Ensure the starter battery voltage is above the cut-in threshold.
- Error Indicator On: Refer to the LED Indicators section (4.2) for the specific error type (over-voltage, over-temperature, reverse polarity, etc.) and take corrective action.
- Bataraidh gun chosgais: Verify that the correct battery type is selected using the DIP switches. Check solar panel connections and output, and ensure the alternator is functioning correctly.
- Reduced Charging Current: Ensure the LC port is not connected if full current is desired. Check cable sizes against recommendations in section 3.3.
For persistent issues, please contact Renogy customer support.
7. Sònrachaidhean
| Sònrachadh | Luach |
|---|---|
| Brand | RIAGHAILT |
| Dath | Dubh |
| Meudan toraidh (D x W x H) | 17.5 x 31.1 x 6.8 cm |
| Toradh Voltage | 12 Volt |
| Inbhean Gèilleadh | CE, RoHS |
| Rangaichte an-dràsta | 60 Amps |
| Àireamh modail saothraiche | RNG-DCC1212-60-JP |
| GTIN (Àireamh Aithneachaidh Malairt Cruinneil) | 00810009715924 |
| UPC | 810009715924 |
| Seòrsa Bathar | Charger DC-DC |
| Co-phàirtean air an toirt a-steach | Japanese Instruction Manual, DC-DC Charger Unit |
8. Bhidio Bathar Oifigeil
This video provides a visual guide on how to install and connect the Renogy DC-DC MPPT Charger, demonstrating connections to a starter battery, a lithium house battery, and a solar panel. It also covers setting battery types and understanding LED indicators for charging status.
9. Barantas agus Taic
Tha an toradh seo a’ tighinn le a Barantas an neach-dèanamh 1-bliadhna.
For any questions or support regarding your Renogy DC-DC Charger, please contact our customer service team:
- Fòn: 1-909-287-7111 (M-F 8:30am-5pm PST)
- Weblàrach: https://www.renogy.com
- Post-d: taic@renogy.com