12V 20A DC-DC Battery Charger for RV, Van, Boat, Off-Grid | Lithium & Lead-Acid Batteries
12V 20A DC-DC Battery Charger for RV, Van, Boat, Off-Grid | Lithium & Lead-Acid Batteries is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
We offer fast and reliable shipping across the continental U.S., with free shipping available on most orders (exclusions may apply based on brand and product type). Orders are typically processed within 1–2 business days and transit time is usually 4–7 business days. Larger items may ship via freight and require a scheduled curbside delivery. Please ensure your contact details are accurate at checkout. For questions about delivery timelines, shipping eligibility, or special requests, feel free to contact us directly. See Policy.
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Do You Offer Financing?
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Price Match Guarantee
Price Match Guarantee
We’re committed to offering the best online prices—if you find a lower price from an authorized retailer, we’ll beat it. Our 100% Price Beat Guarantee excludes promotions, auction sites, and exchanges, and factors in item price, tax, and shipping. For price match inquiries, contact us at (833) 932-9683
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










