Includes all taxes
GRENNOVA Nova Series (2200W)
đŚ The package contains
â Intelligent inverter x 1
â User's manual x 1
â Power connection cable x 1


Q1:What are the selling points of inverters?
â
1100W True Continuous Power (2200W Peak)
â
DC 12V/24V/48V/60V Optional Input, 110V/220V Optional Output
â
6 Safety Protections (Overload/Overheat/Short Circuit etc.)
â
Universal Socket for Daily Devices
â
100% Tested, 1-Year Warranty & 24/7 Customer Service
Q2:What should be noted about inverters?
âThe rated continuous power is 1100W, 2200W is only for short-time startup surge (â¤1 second). Do NOT use devices with continuous power over 1100W.
âKeep daily load under 80% of rated power (â880W) for longer lifespan.
âConfirm the appliance's rated voltage matches your inverter's output voltage (110V/220V) before use.
âUse only with lead-acid or lithium iron phosphate batteries, do NOT reverse the positive/negative poles.
âStop use immediately if battery voltage drops below 10V (12V system), avoid damage from low voltage.
Q3:How should batteries be selected?
Choosing the right battery is very important for your inverter to work safely and stably.
1. Selection Principle
The actual output power of the inverter is determined by the discharge capability of the battery.
If the battery capacity is too small, the following problems will occur:
âLow voltage alarm
âAutomatic shutdown
âUnable to drive loads
âCannot reach rated power
2. How to calculate the required battery current
The maximum current the battery needs to supply depends on your inverter power and battery voltage.
Formula:
Discharge Current (A) = Inverter Rated Power (W) á Battery Voltage (V) á 0.85
3. Suggested Battery for Common Inverters
For 12V Batteries
â500W inverter â Recommended battery: 70Ah or above
â1000W inverter â Recommended battery: 100Ah or above
â1500W inverter â Recommended battery: 150Ah or above
â2000W inverter â Recommended battery: 200Ah or above
For 24V Batteries
â1000W inverter â Recommended battery: 70Ah or above
â1500W inverter â Recommended battery: 100Ah or above
â2000W inverter â Recommended battery: 150Ah or above
â3000W inverter â Recommended battery: 200Ah or above
4. Important Tips
âInsufficient battery capacity will cause low voltage alarm, shutdown or unable to reach full power.
âFor long life and safe use, do not overload the battery.
âIf you need help choosing a battery, please tell us your inverter model and load power.

Q4:What services do we provide?
1ă100% Full Tested Before Shipment
2ă1-Year Manufacturer Warranty
2ă24/7 Online Customer Support: Reply within 12 hours for any questions
4ăProfessional Usage & Installation Guidance Provided
5ăNo Hidden Fees, Fast Shipping with Tracking

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Payment Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.
1. Accepted Payment Methods
We accept the following payment options:
Major Credit & Debit Cards (Visa, MasterCard, American Express)
Secure Online Payment Gateways (such as PayPal, Stripe, or other providers available at checkout)
Any additional payment methods displayed during checkout
All payments must be completed in full at the time of purchase.
2. Secure Transactions
All transactions are processed through encrypted and secure payment systems to protect your personal and financial information. We do not store your full payment details on our servers.
3. Currency
Prices are displayed in the currency indicated on the website. If you are purchasing from another country, your bank may apply currency conversion fees.
4. Order Confirmation
Once your payment has been successfully processed, you will receive an order confirmation email containing your purchase details.
5. Failed or Declined Payments
If your payment is declined, please verify your billing information or contact your bank. Orders will only be processed after successful payment confirmation.
6. Fraud Prevention
BILLIONS BIRDS reserves the right to cancel or refuse any order if fraud or unauthorised activity is suspected.
Delivery Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.
1. Order Processing
All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.
2. Shipping Times
Estimated delivery times vary depending on your location:
Domestic Shipping: 3–7 business days
International Shipping: 7–15 business days
Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.
3. Shipping Costs
Shipping fees are calculated at checkout based on your location and selected shipping method. Any customs duties, taxes, or import fees are the customer's responsibility.
4. Tracking Information
Once your order has been shipped, you will receive a confirmation email with tracking details (if available) so you can monitor your package.
5. Delivery Issues
If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.
6. Incorrect Shipping Information
Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.
Refund Policy – BILLIONS BIRDS
At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.
1. Return Eligibility
You may request a return within 14 days of receiving your order. To qualify for a return:
The item must be unused, unworn, and in the same condition as received.
The item must be in its original packaging.
Proof of purchase (order confirmation or receipt) is required.
Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.
2. Non-Refundable Items
The following items are non-refundable:
Final sale or discounted items
Gift cards
Items damaged due to misuse, negligence, or improper care
3. Return Process
To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.
Unless the item is defective or incorrect, customers are responsible for return shipping costs.
4. Refund Processing
Once we receive and inspect your returned item:
We will notify you of the approval or rejection of your refund.
If approved, the refund will be issued to your original payment method within 5–10 business days.
Please note that banks or payment providers may require additional time to process refunds.
5. Damaged or Incorrect Items
If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.
6. Late or Missing Refunds
If you have not received your refund:
Check your bank account again.
Contact your credit card company or payment provider.
If the issue persists, don't hesitate to contact our support team for assistance.
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