WATTNOVA 12V 40A DC to DC Charger – 500W Dual Chargers for RV, Marine, Solar System, Compatible with LiFePO4, Gel and Sealed Lead Acid Batteries

Short Description:

· Model: DDB‑40A 12V 40A DC‑DC Battery Charger
· Output Power: 500W
· Dimension: 261 × 175 × 68 mm
· Weight: 1.9kg

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Product Detail

Product Parameters

Models	DDB-20A	DDB-40A	DDB-60A
System Voltage	12V	12V	12V
Power Type	DC to DC	DC to DC	DC to DC
Maximum Output Current Rating	20A	40A	60A
Output Power	250W	500W	750W
Compatible Batteries	AGM, Gel, Standard Lead Acid, Lithium (LiFePo4)	AGM, Gel, Standard Lead Acid, Lithium (LiFePo4)	AGM, Gel, Standard Lead Acid, Lithium (LiFePo4)
Operating Temperature Range	-20°C to +50°C	-20°C to +50°C	-20°C to +50°C
Dimensions	8.3 x 6.9 x 2.7 in / 211 x 175 x 68 mm	10.3 x 6.9 x 2.7 in / 261 x 175 x 68 mm	12.2 x 6.9 x 2.7 in / 311 x 175 x 68 mm
Weight	1.33kg	1.9kg	2.40kg
Certification	CE	CE	CE
Warranty	1 Year	1 Year	1 Year
Protect @ Input	High-voltage, low-voltage, reverse polarity, high-temperature, shortcircuit	High-voltage, low-voltage, reverse polarity, high-temperature, shortcircuit	High-voltage, low-voltage, reverse polarity, high-temperature, shortcircuit
Low Voltage Cut Off	8V	8V	8V
Low Voltage Restart	10V	10V	10V
High Voltage Shutdown	16V	16V	16V
High Voltage Restart	15.5V	15.5V	15.5V

INTELLIGENT 8-STAGE SMART CHARGING

Automatically switches between stages – desulphation, soft start, bulk, absorption, analysis, and float – to protect and extend battery lifespan. Compatible with AGM, Gel, Standard Lead Acid, and LiFePO₄ batteries.

HIGH EFFICIENCY & COMPACT DESIGN

Optimized DC-DC conversion performance. Flame-retardant ABS shell and built-in cooling fan ensure stable performance under -20°C to +50°C environments.

COMPREHENSIVE SAFETY PROTECTION

Equipped with full protection features: reverse polarity, over-voltage, over-temperature, short-circuit, and low-voltage detection. Safeguards both starter and leisure batteries for worry-free operation.

EAZY INSTALLATION

Compact footprint, dimension varies by model:
DDB‑20A: 211×175×68 mm
DDB‑40A: 261×175×68 mm
DDB‑60A: 311×175×68 mm, for flexible mounting.