🔌 DC 6–40V Battery Charger Discharger Controller – Auto Cut-Off | Overvoltage & Undervoltage Protection | Timer Function | Serial Interface
Original price was: $27.17.$18.11Current price is: $18.11.
Smart Protection | Precise Voltage Monitoring | Multifunction Relay Control | TTL Serial Communication
Take full control of your power systems with this intelligent battery charger/discharger control board, designed to manage charging and discharging cycles with built-in safety protections. It features undervoltage and overvoltage protection, adjustable time control, serial port communication, and emergency stop—all in one compact module.
15 in stock
✅ Key Features:
-
📊 Dual Voltage Protection
Set upper (UL1) and lower (nL1) voltage limits to automatically trigger charging or discharging. Prevent overcharge and deep discharge damage. -
⏱️ Programmable Timer (0–999 mins)
Automatically disconnect after a defined charging or discharging period for safe, hands-free operation. -
🔁 Multiple Operating Modes (U-1 to U-6)
Choose from 6 pre-set logic modes depending on whether you’re charging, discharging, or operating in-range/out-of-range conditions. -
🛑 One-Key Emergency Stop
Instantly cut off the relay in case of error or danger using the built-in STOP button. -
💬 Serial Communication (TTL/115200 bps)
Monitor voltage, relay status, and operation time in real-time or set parameters remotely using simple commands. -
📡 Signal Output Port
Provides high-level signal when the relay is active—ideal for triggering external devices or indicators. -
🧠 Sleep Mode
Auto shutoff of the display after 5 minutes of inactivity to conserve energy, while the module continues operation.
🔧 Technical Specifications:
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Power Supply Voltage: DC 6–40V
-
Voltage Detection Range: 0–60V (±0.1V accuracy)
-
Max Current: Suitable for charger/discharger loads (based on relay rating)
-
Time Setting Range: 0 to 999 minutes
-
Relay Type: Digital intelligent control
-
Interface: TTL serial port
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Dimensions: Compact PCB format
-
Baud Rate: 115200bps (8N1 format, no parity)
🔁 Operation Modes (U-1 to U-6):
| Mode | Description |
|---|---|
| U-1 | Charge control: Relay ON below lower limit, OFF above upper limit |
| U-2 | Charge control + timer: Relay ON below lower limit and runs for OP time |
| U-3 | Discharge control: Relay ON above upper limit, OFF below lower limit |
| U-4 | Discharge + timer: Relay ON above upper limit and runs for OP time |
| U-5 | Relay ON within voltage range |
| U-6 | Relay ON outside of voltage range |
🧪 Example Serial Commands:
-
"dw02.9"– Set lower voltage to 2.9V -
"up10.1"– Set upper voltage to 10.1V -
"U-1"– Set working mode -
"start"– Begin real-time data upload -
"stop"– Halt data upload -
"get"– Retrieve current settings
Combine commands: "dw02.9,up10.1" to set both limits in one line.
📦 Package Includes:
-
1 × DC 6–40V Battery Charger/Discharger Controller Module
-
User manual (may be digital/downloadable)
🔒 Application Scenarios:
-
DIY battery packs & solar power systems
-
12V / 24V / 36V / 48V lithium or lead-acid batteries
-
Industrial automation control
-
Smart battery maintenance & management
🛠️ Empower your power systems with this intelligent controller—designed for enthusiasts, engineers, and energy-conscious users alike. Boost safety, extend battery life, and add automation with ease!
At SMART AURORA, we’re committed to delivering your tech gadgets quickly, securely, and with full transparency. Below is everything you need to know about our shipping process and return policy.
📦 Shipping Information
1. Processing Time
Orders are typically processed within 1 business day. You’ll receive a confirmation email with tracking details once your order ships.
2. Shipping Times
We offer fast and reliable shipping both across the United States and internationally, with fulfillment from multiple countries based on product availability.
🚚 Local Shipping
From USA to USA: Estimated delivery in 2~5 business days
From other local warehouses to the same country: Estimated delivery in 3~7 business days
✈️ International Shipping
From China to worldwide: Estimated delivery in 5~12 business days
If the product page doesn’t specify the shipping country, the item will ship from China by default.
Note: Delivery times may vary depending on the destination, customs clearance, holidays, and couriers
3. Tracking Your Order
A tracking number will be provided via email once your order is dispatched. You can track your shipment on our website or through the carrier's portal.
4. Shipping Costs
Shipping fees are calculated at checkout based on your location and selected shipping method. We occasionally offer free shipping promotions—be sure to subscribe to our newsletter!
🔁 Return & Refund Policy
Your satisfaction matters to us. If something isn’t right, we offer a 14-day return window from the day you receive your item.
✅ Return Conditions:
Item must be unused and in original packaging
All accessories and manuals must be included
Items must not be sale/clearance or personal care products (for hygiene reasons)
💰 Refund Process:
Once we receive and inspect your return, we’ll notify you of approval
Refunds will be processed to your original payment method
Processing times may vary depending on your payment provider
🚚 Return Shipping:
Return shipping costs are the customer’s responsibility unless the item is defective or incorrect
We recommend using a trackable shipping method
🛠️ Damaged or Incorrect Items:
If your item arrives damaged or incorrect, contact us within 7 days of delivery and we’ll make it right—either through a replacement or full refund
🔄 How to Initiate a Return
All returns are subject to our 🚚 Return & Refund Policy.
To initiate a return, please go to the Orders page in your My Account section and click “Request a Return” next to the item — within the allowed return period.
Returned items must be unused, undamaged, and in their original packaging.
For additional support, feel free to contact us at:
📧 Support@SmartAurora.IO
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