WATTNOVA BG12‑20 12V 20A AC‑DC 8‑Stage Smart Battery Charger 250W for RV Marine Solar System, Compatible with LiFePO4 AGM Gel Sealed Lead Acid Batteries

Short Description:

· Model: 12V 20A Battery Charger
· Ac Input Voltage: 100 - 250VAC | 45 - 65Hz
· Dimension: 220*190*120mm
· Power: 250W
· Weight: 1.29KG

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Product Detail

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	1.48KG	1.65KG	1.72KG	1.72KG	2.4KG

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.