0-30V 0-10A 300W Adjustable DC Bench Power Supply Reverse Polarity Protection Auto Stop Full Charge CV CC Regulated Unit RV Caravan Camping Lithium AGM Lead Acid Battery Charging Auto DIY Battery Test OCP Safe Charger USB-A USB-C Fast Charge AU Plug

🔒 SAFE BATTERY CHARGING POWER SUPPLY – DIFFERENT FROM ORDINARY LAB POWER
✅ Reverse Polarity Protection – No more burnt batteries or devices from wrong connection
✅ Auto Stop When Fully Charged – Eliminates overcharging, extends battery lifespan
✅ OCP/OVP Protection – Full safety against over-current & over-voltage damage
✅ One-Touch Charge Button – Simple operation, no complex settings needed

1. 🔥 #1 DIFFERENTIATOR: Reverse Polarity Protection
Tired of worrying about reversing the battery terminals and ruining your expensive battery or device?
Our power supply comes with built-in reverse polarity detection & protection.
Automatically detects wrong polarity connection
Cuts off power instantly to prevent damage
100% safe for car, motorcycle, lead-acid & lithium batteries
No more costly mistakes, perfect for DIYers, mechanics & hobbyists
2. ⚡ #2 GAME-CHANGER: Auto Stop When Fully Charged
Forget to unplug your battery charger? Overcharging is the #1 cause of battery swelling, leakage and early failure.
Our power supply features intelligent full-charge auto shut-off:
Monitors battery voltage in real time
Automatically stops charging when battery is 100% full
Prevents overheating & overcharging, doubles battery service life
Ideal for long-term charging, overnight use & unattended operation
3. 🛡️ Full Safety Protection Suite (OCP/OVP)
Built for professional & home use, our power supply is equipped with industry-standard safety features:
OCP (Over Current Protection): Cuts power if current exceeds safe limits
OVP (Over Voltage Protection): Shuts down automatically to avoid voltage spikes
Short circuit protection & overheat protection included
CE certified, compliant with EU safety standards
4. 🎯 One-Touch Charge Button – Easier Than Ever
Unlike traditional lab power supplies with complicated knobs & settings, our model has a dedicated one-touch charge button:
One press to start charging, no manual parameter adjustment
User-friendly for beginners, time-saving for professionals
Clear LED indicator shows charging status at a glance
Perfect for quick battery charging, maintenance & testing

🚗 PERFECT FOR ALL YOUR CHARGING NEEDS
✅ Car & Motorcycle Batteries: Safe charging for 12V/24V lead-acid, AGM & lithium batteries
✅ DIY & Electronics Projects: Reliable power for hobbyists, tinkerers & repair work
✅ RV & Solar Batteries: Maintain & charge deep-cycle batteries for camping & van life
✅ Workshop & Garage Use: Durable, safe power for professional mechanics & technicians

Wide range of application scenarios

Lithium-ion batteries: Used in consumer electronics (mobile phones/laptops), new energy vehicles, energy storage, power tools, and drones. Require precise charging management (such as automatic shut-off upon full charge and reverse polarity protection). Charging parameters vary depending on the battery chemistry (ternary/lithium iron phosphate).
Lead-acid batteries: Used in two-wheeled electric vehicles, car starting batteries, UPS systems, and backup power supplies. Primarily use three-stage charging and require protection against overcharging and water loss. Protection features can extend battery life.
Sodium-ion batteries: Used in low-speed vehicles and energy storage (pilot projects). Charging logic is similar to lithium-ion batteries, and protection requirements are also similar.

Selling Point Description:

Battery positive and negative pole detection: Turn on the "BATTERY" function, and the orange light will flash. When charging the battery, if the output positive pole is connected to the battery negative pole and the output negative pole is connected to the battery positive pole, the "BATTERY" light will still flash orange, indicating a wiring error or battery damage. At this time, it is not possible to output current and voltage.
[Charging Status Detection]: When the battery is charging normally, the "BATTERY" orange light is constantly on, and there is a battery level display and Ah display. The real-time display of charging power (Ah) allows you to understand the battery status.
[Battery Full Stop Output]: After the battery is fully charged, the "BATTERY" light turns green and the output is disconnected. When your battery is full, our power supply will stop charging, allowing you to rest assured.
[OCP Function] Overcurrent detection alarm: easily activated through the "OCP" button. Detect short circuits and overcurrent, trigger alarms and stop output to protect connected devices.
Two different charging ports, USB and Type-C, facilitate fast charging of mobile phones and electronic devices that require repair.
Sometimes we need to switch between different voltage or current outputs, but we often forget to unplug the previous instrument, causing it to burn out, which often occurs during maintenance. The output on/off key aims to solve this problem. By pressing the output on/off key, the required voltage and current can be adjusted without actual output power, making this DC power supply safer and more energy-efficient.

Charging Function Operation Description:

Turn on the "BATTERY" function, the orange light flashes
When the battery is charging normally, the orange light "BATTERY" stays on
The "BATTERY" light flashes orange, indicating a wiring error or battery damage
After the battery is fully charged, the "BATTERY" light turns green and the output is disconnected
Firstly, you will press the "Battery" button (the "Battery" light will start flashing yellow), and adjust the voltage and current adjustment knobs to the desired values.
If the connection is incorrect (polarity heating or disconnection), or if there is a problem with the battery and charging cannot start, the "battery" light will remain on
twinkle. Confirm correct connection or check if the battery is damaged.
If there is an abnormal situation such as cable disconnection during the charging process, the power supply will stop charging, and the "battery" light will start flashing again.
Please solve the problem before pressing the 'OUTPUT' button to continue charging.
After charging is completed, the green light on the "battery" indicates that the battery is fully charged.

Charging Precautions:

1. It is necessary to set the charging voltage and charging current according to the original battery manufacturer's recommendations. The charging voltage is generally 1.15 times the rated voltage of the battery, and the charging current is set to 0.2C (C=total battery capacity, unit: Ah, for example)
5000mAh battery, charging current should be set to 1A. ）
2. Please make sure to work in battery charging mode (press the battery button to turn on the light)
3. Connect the battery correctly, with red corresponding to the positive pole and black corresponding to the negative pole. After confirming that everything is correct, press the OUTPUT button to start charging
4. This product is not a professional charging device. If used for a long time, please purchase the corresponding dedicated charger
5. Non professionals or untrained personnel are prohibited from using
6. Please ensure that someone is on duty during the charging process and prohibit charging when leaving
7. Minors are prohibited from using

Introduction to Activating Battery Function:

1> TicNe charging: Used for severely discharged batteries (such as those that have not been used for a long time) that require recharging. During the charging process, set
The charging current loss exceeds 0.1C (C=capacity in Ah), for example, for a 5Ah battery, the charging current should be set to 0.5A. After the battery is fully charged
Reach the Qatar valve and switch to standard charging with 0.2c.
2> Connect the positive and negative terminals of the power supply to the positive and negative terminals of the rechargeable battery using an output cable. After connection, the "battery" light remains yellow, press the "output" button to start charging (the Ah indicator light on the panel lights up, and the screen displays the charging amount)

USB-A/C Port

USB-A fast charging port support protocol: PE1.1/2.0, APPLE,BC1.2，AFC,FCP,QC2.0/QC3.0
USB-C fast charging port support protocol: PE1.1/2.0, APPLE,BC1.2，AFC,FCP,QC2.0/QC3.0,PD3.0

Explanation of Key Voltage Parameters

1. Nominal voltage: It is the voltage value measured by the battery under standard conditions, used to indicate the basic performance of the battery.
2. High termination charging voltage: It is the highest voltage value that the battery is allowed to reach during the charging process. Exceeding this value may cause overcharging of the battery, thereby damaging its performance.
3. Low end discharge voltage: It is the lower voltage value that the battery is allowed to reach during the discharge process. Continuing to discharge below this value may lead to excessive discharge of the battery, which can also damage its performance.

Introduction to CE Certificate

SPS305 3010 switching power supply

🛒 Upgrade to a Safer, Smarter Power Supply Today
Stop risking your batteries with ordinary power supplies. Get the only power supply with reverse polarity protection, auto stop charging & one-touch operation – designed for European users who value safety & convenience.
Order now and enjoy EU fast shipping & 2-year warranty!

Camping RV Scene
RV motorhome、Caravan camper trailer、Camper van、Off-grid camping、Australian outback travel、Caravan house battery、Deep cycle storage battery、Solar supplementary charging、Car battery maintenance、Long term caravan storage trickle charge
Auto repair workshop scene
Auto repair workshop、Home garage DIY、Motorcycle battery repair、Boat marine battery、ATV quad bike battery、Car battery fault testing、Electronics hobby lab、Lithium battery assembly workshop
Functional safety scenarios
Reverse polarity protection、Auto full charge cut off、OCP over current protection、Anti back current、Overcharge prevention、Short circuit safety、CV CC constant current voltage、Blackout safe connection
Functional safety scenarios
0-30V adjustable voltage、0-10A variable current、300W high power bench supply、USB-A QC quick charge、USB-C fast charging port、AU Australian plug、Digital four display lab power、Regulated stabilized DC power source

Our Service time

Our Working time is Monday to Friday 9:00 AM to 7:00 PM BeiJing Time.
All orders will not be processed at weekend and holidays.

Warranty&Return

Our store provides free replacement for orders within 30 days from delivery date. For orders from 1 to 12 months, you have to pay some parts of order value to get replaced. For order older than 12 months, we will give small discounts.

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during working time,and we promise to solve your problem within 24 hours.

About US

Retail and wholesale are all welcome ! The more you buy, the more discounts you get ! Feel free to contact us for more selections !