Samlex Solar Battery Charger For 12 Volt Batteries - S6ASEC1250UL
Experience the power of efficient charging with the SEC-1250UL Samlex Solar Battery Charger, designed specifically for 12 Volt batteries. This advanced, fully automatic three-stage battery charger delivers a robust 50 Amperes of charging power, making it the perfect solution for all types of 12 Volt lead-acid batteries, including Flooded, Absorbed Glass Mat (AGM), and Gel Cell. Whether you are utilizing a 120 Volt, 60 Hertz or 230 Volt, 50 Hertz AC source, this charger adapts seamlessly to your needs.
Features
- Three-stage 50 Ampere battery charger for efficient and quick charging.
- Compatible with all 12 Volt lead-acid battery types, ensuring versatility.
- Utilizes switch mode technology for high efficiency, lightweight design, and silent operation.
- Automatically charges Flooded, AGM, or Gel Cell batteries, simplifying the charging process.
- Can charge 2 banks of batteries simultaneously without the need for an isolator.
- Doubles as a power supply or DC UPS when connected to a battery, offering added functionality.
- Equipped with safety features including short circuit, overload, reverse battery connection, and over-temperature protections for reliable operation.
Specifications
| Voltage Rating |
120V / 230V AC |
Supports both 120V and 230V AC input/output systems |
| Ampere Rating |
50 Amps |
Maximum current handling capacity |
| Number of Stages |
2 / 3 Stage |
Charging/operation stages depending on configuration |
| Solar Powered |
No |
Not designed to operate directly from solar energy |
| Height |
3.82 Inches |
Physical height of the unit |
| Length |
13.03 Inches |
Physical length of the unit |
| Width |
9.61 Inches |
Physical width of the unit |
What our Experts Think
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Advanced 12V, 50A fully automatic battery charger designed to convert 120V AC into stable DC charging power for deep-cycle battery systems.
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Uses a 3-stage charging profile (Bulk, Absorption, Float) to ensure fast charging while protecting battery lifespan and preventing overcharge.
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Compatible with Flooded, AGM, and Gel lead-acid batteries, making it suitable for RV, marine, solar backup, and industrial use.
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Delivers up to 50A output current, ideal for medium-to-large battery banks requiring efficient recharging.
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Includes temperature compensation via external sensor, improving charging accuracy and battery health in varying climates.
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Built-in protections (overload, short circuit, reverse polarity, over-temperature) enhance safety and system reliability.
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Can function as a DC power supply or DC UPS, adding flexibility for continuous-load applications.
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Supports two battery banks simultaneously without an isolator, simplifying multi-battery setups.
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Features half-power mode, allowing safer charging of smaller capacity batteries without stress or overheating.
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Compact, switch-mode design ensures high efficiency, low weight, and quieter operation compared to traditional transformer chargers.
Q&A
Q: What is the Samlex S6ASEC1250UL battery charger?
A: It is a high-power 12V, 50A automatic battery charger designed to safely charge deep-cycle batteries in solar, RV, marine, and backup power systems.
Q: What does this charger do?
A: It converts AC power (120/230V) into regulated 12V DC charging power to recharge batteries efficiently and safely.
Q: What type of batteries is it compatible with?
A: It works with flooded, AGM, and gel lead-acid batteries, using a smart multi-stage charging profile.
Q: What is the charging current?
A: It delivers up to 50 amps of charging power, suitable for medium to large battery banks.
Q: What charging stages does it use?
A: It uses a 3-stage (bulk, absorption, float) charging process to maximize battery life and performance.
Q: Can it charge more than one battery?
A: Yes. It can charge up to two separate battery banks simultaneously without needing an isolator.
Q: Does it protect the battery?
A: Yes. It includes overload, short-circuit, over-temperature, and reverse polarity protection, plus temperature compensation for safer charging.
Q: Can it be used as a power supply?
A: Yes. It can also function as a regulated 12V DC power supply or backup power source (DC UPS mode).
Q: Is it suitable for solar systems?
A: Yes. It is commonly used in solar backup systems, RV setups, marine applications, and off-grid battery banks.
Maintenance Tips
- Inspect AC plug, DC output leads, and battery clamps regularly for wear, corrosion, or loose connections.
- Ensure terminals are clean, tight, and free from oxidation to maintain efficient charging.
- Keep charger ventilation openings clear of dust and debris for proper heat dissipation.
- Use only with compatible 12V battery types as specified by the manufacturer.
- Check cables for insulation damage and replace immediately if frayed or cracked.
- Place charger in a dry, well-ventilated area away from moisture and direct sunlight.
- Avoid covering the charger during operation to prevent overheating.
- Periodically verify charging performance and battery voltage for proper function.
- Disconnect power before cleaning or inspecting connections for safety.
- Store the charger in a cool, dry place when not in use to extend lifespan.
Damage 
Loss 
Theft 
