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2-Year Warranty
Power Queen 12V 40A DC to DC Battery Charger
$153.59
$159.99
[Exquisite Design & Simple Operation] Small, light, and exquisite, the Power Queen 12V DC-DC battery charger has a compact design, and the dimensions are 5.83*1.89*7.44 inches, so it can save more space for your vehicle. The additional components, Anderson connectors, bring simple connection and operation in the installation process, less trouble for you during setup. The visual LED indicators let you easily know the charging status.
[High-level Safety Secured & Reverse Charge Function] Power Queen 12V DC-DC battery charger can protect the battery from over-charging, over-voltage, and over-temp, and it has BMS protection for LiFePO4 batteries. Besides, this charger can activate the LiFePO4 battery when the BMS inside the battery shuts off. Where necessary, the service battery can charge the starter battery, protecting the starter battery and alternator from damage.
[Dual Input Charging】Power Queen 12V DC-DC battery charger supports charging the service battery through the generator and solar panels, achieving 100% fully charged on the service battery. The advanced built-in MPPT function of the charger maximizes solar power and brings a high charging efficiency at a proper voltage and charging phase.
[Great Compatibility & More Options] Power Queen 12V DC-DC battery charger is compatible with various battery types, such as Lithium batteries, AGM, Gel, SLA, and CA, and offers you more options and a more flexible lifestyle. The charger can meet your multiple needs for charging the service battery in various application scenarios, such as RV, trailer, camper, truck, yacht, marine, etc.
[24-hour Timely Service] Power Queen struggles to provide every customer with the safest product and the most professional service. If you have any questions, we'll offer one-on-one technical support to analyze consumers' problems within 24 hours.
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Frequently Purchased
Total
$153.59
$159.99
Fast Free Shipping
2-5 business days in the US
Easy Return & Exchange
Not satisfied? We offer a hassle-free 30-day return and exchange policy.
Hassle-Free Warranty
We offer a worry-free warranty for all products. For details, check the product page or contact us at service@ipowerqueen.com with your order number.
Lifetime Customer Support
We'll Always be There for You. If you have any questions or concerns, feel free to contact us at service@ipowerqueen.com.
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12V 40A DC-DC
$153.59
$159.99
Features
Specs
FAQ
Reviews
Specs
BASIC
System Nominal Voltage：
12V
Battery Type：
STD,GEL,AGM,LFP
House Battery Voltage Range：
11.3V to 16.0V
Charging Current：
40A
Charging Efficiency：
Max.90%
Charging Voltage Range：
14.6V (Lithium); 14.4V to 14.8V (Lead Acid)
Temperature Compensation：
-3mV/°C/2V (For Lead Acid Only)
Max. Alternator Input Power：
680W
Standby Self-Consumption：
＜0.6A
Humidity：
≤95% Non-condensing
Recommended Input/Putput Torque：
8N·m to 10 N·m/70.8 lbf· inch to 88.5 lbf·inch
DIMENSIONS
Size：
11.65 *8.46 * 3.35 in
Approx. Weight：
4.85 lbs
TEMPERATURE
Operating：
14°F to 104°F
Storage：
-4°F to 158°F
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FAQ
What type of alternator is this DC to DC on board battery charger compatible with?
This battery charger is compatible with both traditional and smart alternators. However, since traditional alternators maintain a steady voltage during charging and smart alternators adjust their output based on operating conditions, it's essential to connect the charger to a smart alternator using the IGN Signal Wire included in the package, through the Vehicle Ignition Port.
What types of battery does the charger support?
This charger is compatible with 12V Lithium, Gel, AGM, and Calcium batteries, ensuring they reach a full 100% charge. Moreover, it can also revive lithium batteries that have been discharged to a low voltage.
What will happen if the service battery is fully charged?
The Power Queen DC to DC Battery Charger with solar input includes a Voltage Sensitive Relay (VSR). This feature allows the charger to perform Trickle Charging for both the service battery, ensuring it maintains a full charge, and the starting battery using solar panels. Moreover, the VSR ensures reliable isolation between the starting battery and service battery, preventing any interference during charging.
Is it OK to leave a lithium-ion battery on the charger overnight?
Leaving a lithium-ion battery on the charger overnight is typically safe, particularly with chargers like those from Power Queen designed to halt charging when the battery reaches full capacity. This auto-stop feature is standard in modern lithium-ion chargers, effectively preventing overcharging.
How to choose the right charger for my LiFePO4 lithium battery?
It's crucial to ensure your charger provides the correct current and voltage for charging LiFePO4 lithium batteries. For instance, using a 24V charger with a 12V LiFePO4 battery is not recommended. It's essential to use a charger specifically designed for this battery chemistry. Additionally, when charging LiFePO4 batteries, avoid using standard lead-acid chargers that may have features like desulfation or dead battery mode, as these features can potentially harm LiFePO4 batteries.
Can I use this DC-DC charger while driving?
Absolutely. This DC-DC charger is intended to work while the car is driving, continuously charging your secondary battery via the alternator.
Reviews
FAQS
Q:Can I use lead-acid battery charger to charge lithium batteries?
Lithium chargers employ a CV/CC charging technique. This approach maintains a constant current until the battery reaches the target voltage. As the battery approaches maximum capacity, the current gradually decreases. This technique allows for rapid charging while preventing overcharging, making it ideal for lithium-ion batteries.
Normal chargers, on the other hand, rarely use the CV/CC technique. Using a lead-acid battery charger with lithium batteries may result in partial charging or even damage to the lithium cells.
For further information, see the article Can I Charge a LiFePO4 Battery with a Lead Acid Charger?
Q:Is it OK to charge LiFePO4 to 100%?
Yes, Power Queen LiFePO4 batteries may be recharged to 100%. Unlike other lithium battery chemistries, LiFePO4 batteries are engineered to withstand complete charges without severe harm. However, for maximum longevity, it is frequently recommended to keep the battery's SOC between 20% and 80% during normal operation.
Q:Is it OK to leave a LiFePO4 battery on the charger?
Although it is generally safe to leave a LiFePO4 battery on the charger because both the charger and the battery have built-in BMS to prevent overcharging, it is nevertheless advised that you monitor the charging process.
Q:Do Power Queen lithium battery chargers have protection?
Yes. Power Queen LiFePO4 lithium battery chargers have a BMS to protect the battery from overheating, reverse polarity, short circuiting, and overvoltage.
Furthermore, Power Queen LiFePO4 Lithium battery chargers support 0V, allowing you to jump start dead lithium batteries.
Q:What types of battery accessories does Power Queen offer?
Power Queen offers a varied range of battery accessories designed to improve the performance and safety of your battery system. Our assortment includes fuses, fuse holders, battery monitors, marine battery boxes, and battery hold-down systems, among other items.
These accessories work with LiFePO4 and other batteries, ensuring that your system functions smoothly and safely.
Q:Why are battery accessories important?
Battery accessories are crucial for ensuring that your battery system is safe, effective, and long lasting. Proper accessories guarantee that your batteries are securely fitted, correctly charged, and protected from overcurrent or short-circuit circumstances. Fuse and charge controllers are two types of accessories that help govern power flow while also protecting your batteries and other connected devices.
Q:What is the purpose of a battery monitor?
A battery monitor measures the state of charge (SOC), voltage, current, and other important battery statistics. It provides real-time information on the amount of power left in your battery and allows you to check its health. This is especially useful for off-grid systems, RVs, naval stations, and other applications where it is vital not to run out of power suddenly. For further information, see the article "What Is a Battery Monitor and Why Do You Need It?"
Q:What is a fuse holder, and why do I need one?
A fuse holder includes a fuse, which is designed to protect your electrical system from overcurrent conditions that could damage the battery or other components. If a short circuit or overload occurs, the fuse blows, disconnecting power and averting further damage. Power Queen fuse holders are designed to be simple to install while offering safe and reliable battery protection.
Q:Can I use Power Queen accessories with batteries from other brands?
Yes, the majority of our accessories are compatible with LiFePO4, lead acid, and AGM batteries. However, you should always check the specs of each accessory to ensure that it is compatible with the voltage, current, and battery type in your system.
