- Model: BT-1212-15A
- Rated output voltage: 12V DC
- Rated output current: 15A
- Maximum output power: Not specified (approximately 180-220W depending on charge stage)
- Input voltage range: Not specified (typical 12V DC systems)
- Input/output configuration: Non-isolated (common ground)
- Battery chemistry compatibility: Lithium (LiFePO4, LiMn2O4)
- Charging method: Not specified (likely CC/CV for lithium)
- Environmental protection: Waterproof, dust-proof, shockproof
- Mounting: Universal (mounts in almost any location)
- Construction: Compact and lightweight
- Component specification: Imported high-reliability capacitors
- Over-voltage protection: Yes
- Low voltage protection: Yes (prevents deep discharge of primary battery)
- Over-temperature protection: Yes
- Overload protection: Yes
- Short circuit protection: Yes
- Certifications: CE, RoHS
- Warranty period: 2 years limited warranty
Compatible With / Goes Well With
- 12V LiFePO4 auxiliary battery systems (75Ah-200Ah optimal range)
- 12V LiMn2O4 lithium house banks
- Dual battery systems in 4WD vehicles, utes and wagons
- Marine electrical systems with 12V lithium auxiliaries (dry mounting locations)
- Caravan and camper trailer battery systems
- Vehicle-based solar charging integration
- Trade and commercial vehicle auxiliary power systems
- Off-grid touring and expedition electrical setups
Caution: Non-isolated design requires common ground between input and output. Verify your system configuration before installation. Output is 12V only and optimized for lithium chemistry.
Frequently Asked Questions
What does "non-isolated" mean for installation?
Non-isolated means the input negative and output negative share a common ground connection. This is standard for most vehicle dual battery systems where both batteries share the chassis ground. Do not use in applications requiring electrical isolation between input and output circuits.
Can this charge from a 12V alternator while driving?
Yes, this is designed for alternator-based charging in 12V vehicle electrical systems. The charger regulates current draw to protect the alternator while maximizing charge delivery to the auxiliary lithium battery during engine operation.
Where can I mount this charger?
The waterproof, dust-proof construction allows mounting in engine rooms, battery boxes, under seats, external caravan compartments and most other locations. Ensure adequate ventilation around the unit and avoid sealing in completely enclosed spaces.
Does this work with lead-acid auxiliary batteries?
This charger is optimized for lithium chemistry (LiFePO4 and LiMn2O4). While it may charge lead-acid batteries, voltage profiles may not match lead-acid requirements. Use lithium-specific chargers only with lithium batteries for optimal performance and safety.
What is the low voltage protection for?
Low voltage protection prevents the charger from draining your primary (starter) battery below safe levels. When primary battery voltage drops too low, the charger reduces or stops auxiliary charging to preserve starting capacity.
