12V/24V Battery Charger Adapter — Dual-Voltage Intelligent Charger for Lead-Acid & Lithium

• Auto voltage detection — automatically identifies 12V or 24V battery and sets correct charging parameters
• 3-stage intelligent charging — bulk charge for fast recovery, absorption for full capacity, float for maintenance
• Multi-chemistry support — optimized profiles for lead-acid, AGM, gel, and LiFePO4 batteries
• Compact and portable design — convenient for garage, workshop, and mobile use
• Reverse polarity protection — prevents damage if battery clamps are accidentally reversed
• Spark-free connection — safe operation even in enclosed battery compartments
• Trickle charge maintenance mode — keeps seasonal/stored batteries at optimal charge indefinitely

• Automotive — Maintains car, truck, and motorcycle batteries during storage or infrequent use
• Marine — Keeps boat batteries charged and conditioned between trips
• RV & Camping — Charges leisure batteries from shore power at campsites
• Solar Backup — Grid-powered backup charging when solar is insufficient
• ️ Motorsports — Quick charging for race car, ATV, and dirt bike batteries
• Workshop — General-purpose battery maintenance for equipment and tools

Zhejiang Jingying (JYINS) Electrical Co., Ltd., established in 1993, is a leading manufacturer with over 30 years of expertise in power inverters, solar charge controllers, energy storage systems, and renewable energy solutions. Our 500+ employee factory in Wenzhou, China, serves clients across 50+ countries with ISO9001/CE/SAA/RoHS certified products.

• 30+ years of manufacturing excellence since 1993
• ISO9001, ISO14001, ISO45001, CE, SAA, RoHS, FCC certified
• Dedicated R&D center with 30+ national patents
• OEM/ODM services with flexible MOQ and fast prototyping (7-10 days samples)
• Export to 50+ countries across 6 continents
• Professional pre-sales engineering support and after-sales service

Q: Can I leave it connected to the battery permanently?

A: Yes, the float/maintenance mode is designed for long-term connection. It will automatically maintain the battery at full charge without overcharging.

Q: How do I know which model to choose?

A: 10A is sufficient for most car batteries (50-100Ah). 15-20A recommended for larger deep-cycle batteries (100-200Ah). Higher current = faster charging.

Q: Does it work with lithium batteries?

A: Yes, models with LiFePO4 mode use the correct CC/CV charging profile for lithium iron phosphate batteries. Do not use lead-acid mode on lithium batteries.

Q: What's the difference between this and a trickle charger?

A: This is a full-featured charger with higher current output (5-20A vs 0.5-2A for trickle chargers). It can fully charge a dead battery, not just maintain it.