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CalculatorsWATTNOVA 12V 20A DC to DC Charger – 250W Dual Chargers for RV, Marine, Solar System, Compatible with LiFePO4, Gel and Sealed Lead Acid Batteries
Product Parameters
| Models | BG12-12 | BG12-15 | BG12-20 | BG12-25 | BG12-30 | BG12/24-40 |
| Ac Input Voltage | 100 - 250VAC | 45 - 65Hz | |||||
| Effectiveness | 94% | 95% | ||||
| Power | 200W | 220W | 250W | 350W | 450W | 500W |
| Charging Voltage | Charge voltage 'absorption'：Normal: 14,4 V High: 14,7 V Li-ion: 14,2 V | |||||
| Charge voltage 'float'：Normal: 13,8 V High: 13,8 V Li-ion: 13,5 V | ||||||
| Charge voltage 'storage'：Normal: 13,2 V High: 13,2 V Li-ion: 13,5 V | ||||||
| ChargingCurent | 12A | 15A | 20A | 25A | 30A | 40A |
| Low Voltage Detection | 2A | |||||
| Ambient Temperature | -20℃ to +50℃ | |||||
| ChargerType | Eight-stage smart charger:Desulphation, soft start, bulk, absorption, analyse, Recond, float, pulse | |||||
| Type Of Battery | 12V | 12V | 12V | 12V | 12V | 12/24V |
| Battery Chemistry | AGM, Gel, Standard Lead Acid, Lithium (LiFePo4) | |||||
| USB Port | None | |||||
| Shell Material | Flame retardant ABS material | |||||
| Cooling Method | Cooling Fan | |||||
| Functional Protection | High-voltage, low-voltage, reverse polarity, high-temperature, shortcircuit | |||||
| Product Size | 220 x 190 x 120 mm | |||||
| Product Weight | 1.29kg | |||||
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
Up to 95% conversion efficiency with wide AC input (100–250V). 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 size (220×190×120mm) for flexible mounting.