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400W 12V/24V Monocrystalline Solar Kit with 40A MPPT Charge Controller

SKU: HQST-KIT-STARTER400D-30A-MPPT40-TC-US

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$399.99 $799.99

  • Grade A+ 9BB PERC cells for higher daily power output
  • MPPT controller with 99% tracking efficiency
  • Stable performance in high heat and low light
  • Bluetooth monitoring—view system status anytime, anywhere
  • Full protection: overcharge, short circuit, reverse polarity & more
  • LiFePO4 low-temp cut-off + rugged IP65 all-weather design
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Return & refund policy

Shipping, Returns & Refunds Policy

Shipping

  • Free standard ground shipping on orders $49.99+ (before tax).
  • Orders below $49.99 are charged a $5 flat shipping fee.
  • Free shipping applies within the contiguous United States only.
  • Oversized, heavy, or restricted items may be excluded (noted on product page).
  • Orders are processed within 1–3 business days (excluding weekends and holidays).
  • Estimated delivery time is 2–7 business days after shipment.
  • Orders may ship in multiple packages, each with its own tracking number.
  • A valid street address is required; some items cannot be delivered to PO Boxes.
  • Shipments cannot be rerouted once shipped.
  • Shipping to Alaska and Hawaii is available with surcharges.
  • International shipping availability varies by location; customers are responsible for customs clearance and duties.

Order Cancellation

  • Orders can be canceled within 4 hours of placement, before shipping begins.
  • Once shipped, cancellation or interception cannot be guaranteed.

Returns

  • Return requests must be submitted within 30 days of delivery.
  • Items must be unused, undamaged, unmodified, and returned in original packaging.
  • A Return Merchandise Authorization (RMA) is required before returning any item.
  • Modified products are not eligible for return.

Return Shipping Costs

  • HQST covers return shipping only if the product was damaged during shipping, defective, or an incorrect item was delivered.
  • For all other reasons, return shipping costs are the customer’s responsibility.

Refunds

  • Refunds are issued within 7–10 business days after inspection.
  • Refunds are processed to the original payment method.
  • Damage caused by improper installation or handling is not eligible for refund.

Replacements

  • Shipping or manufacturing damage must be reported within 30 days, with supporting photos.
  • Replacement items ship via standard shipping only and cannot be expedited.
  • Replacements can only be shipped to the original country of purchase.

Third-Party Purchases

  • Orders placed through third-party sellers are subject to the seller’s return policy.
  • HQST provides warranty replacements only for eligible third-party purchases.

Contact

For shipping, returns, refunds, or replacements, contact:
sales@myhqsolar.com

Description
Includes
Downloads
FAQ
Reviews
Advanced PERC Tech
Grade A+ Cells
Built to Last
Withstand Extreme Storms
Reliable Package for Maximum Protection
Face Direct Sunlight
Proper Installation Angle
Regular Cleaning
Measure Power Output

100w solar Panel

x 4

40A mppt solar charge controller

x 1

Connectors MMF+FFM Pair

x 3

Z Brackets

x 4
8FT 8AWG Solar Tray Cables

8FT 8AWG Solar Tray Cables

x 1
Solar Panel to Charge Controller Adaptor Kit

Solar Panel to Charge Controller Adaptor Kit

x 1

Frequently Asked Questions

How can I increase the energy output of my solar panels?

Position the solar panels to face direct sunlight without obstructions or shadows. Install at an optimal angle of 30°-45° for maximum absorption. Clean regularly to remove dust, leaves, or debris for consistent energy output.

How should I connect solar panels to my electrical circuit (series vs. parallel)?

Solar panels can be connected in either series or parallel, depending on your electrical circuit size and power needs. It’s best to connect panels with the same open-circuit voltage.
When connected in series, the voltage (V) increases, while the current (A) stays the same.
On the other hand, connecting panels in parallel increases the current (A), while the voltage (V) remains constant.

Do these panels have pre-drilled holes on the back?

Yes, they do. There are four pre-drilled holes to make installing the solar panel quick and secure.

Can this solar panel be used with a 12V marine battery or a 48V lithium battery?

Yes, it can. The optimal operating voltage of this 100W solar panel is 17.4V, making it suitable for charging a 12V marine battery. For a 48V lithium battery, you’ll need to connect at least three solar panels in series.
Please ensure that you connect the solar panel(s) to a charge controller that supports either a 12V or 48V system.

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