

Hero image 0 of KFFKFF 12V 20A DC to DC Battery Charger, 250W, On-Board Charger for Lead-Acid, Lithium, AGM, GEL, and Flooded Batteries, Intelligent Multi-Stage Charging, Suitable for RVs, Commercial Vehicles, Boats, 0 of 9
KFFKFF 12V 20A DC to DC Battery Charger, 250W, On-Board Charger for Lead-Acid, Lithium, AGM, GEL, and Flooded Batteries, Intelligent Multi-Stage Charging, Suitable for RVs, Commercial Vehicles, Boats
Key item features
- Versatile Compatibility: Supports lead-acid, lithium, AGM, GEL, and flooded batteries, and works with various alternator models, ideal for RVs, trucks, and boats.
- Robust Protection: Features comprehensive safety against over-voltage, under-voltage, high temperatures, and reverse polarity, with an isolated input/output design.
- Intelligent Charging: Offers multi-stage charging (two-phase for LifePo4, three-phase for lead-acid) to optimize battery capacity and extend longevity.
- Compact Design: Streamlined aluminum alloy construction with pre-drilled holes for easy, space-saving installation in diverse locations.
- Battery Revitalization: Includes a lithium battery activation function to restore idle or deeply discharged batteries, ensuring readiness for use.
- Efficient Operation: An integrated cooling fan adapts to temperature, maintaining smooth and efficient performance without overheating.
- Clear Monitoring: A two-tone indicator provides quick and easy observation of the charging status.
- Technical Specifications: Operates with a 12V input, 20A charging current, 250W max output, and weighs 2.65 lbs (1.2 kg).
Generated by AI
Specs
Volts, 12 V
Amps, 20 Amps
Automotive battery charger type, DC-to-DC Charger
Brand, KFFKFF
Power type, Corded Electric
Display, No Display
Volts
12 V
Amps, 20 Amps
Amps
20 Amps
Automotive battery charger type, DC-to-DC Charger
Automotive battery charger type
DC-to-DC Charger
Brand, KFFKFF
Brand
KFFKFF
Power type, Corded Electric
Power type
Corded Electric
Display, No Display
Display
No Display
About this item
Product details
Product Description
12V 20A DC to DC Battery Charger, Dependable Power Source
This versatile battery charger is suitable for both lead-acid and lithium batteries and can be used with different types of generators, making it perfect for use in RVs and boats. It features intelligent multi-stage charging and safety protection to ensure reliable operation under various conditions. Its compact design is ideal for installations where space is limited.
Rapid Power Replenishment
This DC to DC charger utilizes energy from the generator to replenish your RV's auxiliary battery during travel, maintaining a steady power source throughout your trip.
All-Encompassing Safety
This battery charger is equipped with integrated safety mechanisms, such as high temperature, short circuit, over voltage, and under voltage protection, guaranteeing reliable and consistent operation during travel, allowing you and your family to have a relaxing vacation.
Consistent Functionality
The integrated cooling fan adapts to the battery charger's temperature, maintaining smooth and efficient operation in various settings without overheating, ensuring reliable performance consistently.
Recharge Dormant Batteries
This DC to DC battery charger addresses problems with lithium batteries due to excessive discharge or extended storage, revitalizing your battery and preventing premature disposal.
Battery Support
This battery charger is crafted to fit into compact spaces, ensuring straightforward installation in your vehicle's confined areas, making it a suitable option for your requirements.
Effortless Observation
The two-tone indicator allows for quick and easy monitoring of the charging status, eliminating the need to frequently check the charger or battery.
Specifications
Item Model Number: SDC-20A
Input Voltage: 12V
Input Battery Voltage Range: DC 8V-16V
Charging Current: 20A
Charging Voltage Range: 13.2V-14.7V (Lead-acid Battery), 12.6V-14.6V (Lithium Battery)
Maximum Output Power: 250W
Compatible Battery Type: Lead-acid & Lithium Battery
Casing Material: Aluminium Alloy
Operational Temperature: 4 °F to 122 °F/–20 °C to 50 °C
Net Weight: 2.65 lbs/1.2 kg
Package Content
1 x DC to DC Charger
2 x Fuses
1 x User Manual
- Compatible with Multiple Battery Types: This 12V 20A DC to DC charger supports both lead-acid and lithium batteries, and functions with different alternator models. Perfect for recharging auxiliary batteries in RVs, trucks, and boats.
- Comprehensive Safety Features: This on-board battery charger is equipped with protections against over-voltage, under-voltage, high temperatures, and reverse polarity, ensuring reliable and safe operation. The isolated input/output design prevents interference with your vehicle's electrical system.
- Intelligent Multi-Phase Charging: This battery charger offers various charging phases tailored for LifePo4 (two-phase) and lead-acid batteries (three-phase: bulk, absorption, maintenance). It guarantees a thorough charging process to maximize battery capacity and longevity.
- Space-saving and Simple Setup: Featuring a streamlined aluminum alloy construction, this DC to DC charger includes pre-drilled holes for effortless installation in any location.
- Revitalize Your Batteries: This DC to DC battery charger includes a lithium battery activation function, efficiently restoring idle or deeply discharged batteries, ensuring they are ready for use whenever required.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Volts
12 V
Amps
20 Amps
Automotive battery charger type
DC-to-DC Charger
Brand
KFFKFF
Warranty
Warranty information
One Year
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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May 14, 2026
Reviewer name: Joseph
3 out of 5 stars
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Current price is USD$66.49
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