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RICH SOLAR

12V 20A DC-DC Battery Charger for RV, Van, Boat, Off-Grid | Lithium & Lead-Acid Batteries

SKU RS-DC20

Regular price: $129.99

Regular price: $129.99

Quantity

Estimated Shipping

Free Standard Shipping on all orders within the United States.

Processing Time: Orders are processed in 1–2 business days. Orders placed before 2:00 PM EST begin processing the same day.
Transit Time: Standard items arrive in 3–7 business days. Larger freight items may arrive in 10–21 business days.
Freight Delivery: The carrier will contact you via phone to schedule a delivery window.
Inspection is required upon arrival; please note any damage on the receipt before signing so we can expedite a replacement..

See Shipping Policy for more info.

Return Policy

Returns & Support
We offer a 7-day return window for all unused and unopened gear. Returns are subject to a 15%–25% restocking fee, and return shipping is the responsibility of the customer.

See Return & Refund Policy for more info.

Product Description

Features

Broad System Compatibility

Compatible with 12V AGM, Flooded, Gel, and Lithium batteries
Compatible with smart or traditional alternators via connection to the 12V starter battery
Ideal for RVs, vans, boats, and off-grid power systems

Smart Multi-Stage Charging

2-stage charging for lithium batteries
3-stage charging for lead-acid batteries (Bulk → Absorption → Float)
Lithium Battery Activation: Automatically wakes up over-discharged lithium batteries

Smart Protection & Control

Built-in protection against over-voltage, over-temperature, and reverse polarity
Battery isolation prevents reverse current between batteries and protects the starter battery

Advanced Control Interfaces

D+ Ignition Terminal: Charges only when the engine is running to protect the starter battery
LC Terminal: Activates low current mode (10A) for small alternators or weak power sources
RJ11 Temperature Sensor Port: Adjusts voltage for cold and hot environments to protect battery lifespan (Not for lithium batteries)

*D+, LC cables, and a temperature sensor are not included

Specifications

Output Nominal Power: 250W
Output Nominal Current: 20A
Operating Current Range: 18~22A
Low Current Mode: 10A
Floating Charge Current: 3~5A
Low Current Mode Current Range: 8~11A
Quiescent Current: ＜0.45A
Ripple Voltage: ＜500mV rms
Battery Charging Mode: 2-stage for lithium; 3-stage for lead-acid
Efficiency: >85%, @14VDC 30% load
Input Nominal Voltage: 12VDC
Operating Voltage Range: 10~16VDC
Input Current Limit: ≤34A
Dimensions: 8.4*7.4*3.1 in
Weight: 4.0 lb