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HQST 100A MPPT Solar Charge Controller with Smart APP Control, LiFePO4 Battery Low Temp Protection, and Parallel Charging

SKU: HCC100HTR-FC
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$182.99 $309.99
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Key Features
  • True 100A MPPT Efficiency : Delivering the power you paid for—99% tracking efficiency and 98.7% peak conversion, about 30% higher than PWM controllers.
  • Smart Bluetooth & APP Control : Built-in Bluetooth module works with "ChargePro 2.0" or "PVChargePro" apps for real-time monitoring and 300 days of historical data. LCD display included.
  • Low-Temp Protection for LiFePO4 : Cut-off charging below 32℉ and discharging below 5℉—prevents battery damage. Also reactivates dormant LiFePO4 batteries after over-discharge.
  • Wide Compatibility : Works with virtually any solar panel and battery on the market — supports 12V/24V/36V/48V systems and LiFePO4, AGM, GEL, Flooded, and user-customized batteries.
  • Unmatched Value : Advanced MPPT technology at an affordable price—maximizes solar harvest without breaking the bank.
  • Parallel Charging Ready : Connect up to 9 controllers (M4880F/M48100F) to charge the same battery bank—no need to reinstall your entire system.
  • 10 Comprehensive Protections : Over-charging, over-voltage, over-current, overheating, reverse polarity, and more—maximum safety for system faults and installation errors.
  • Off-Grid Ready : Supports 12V/24V/36V/48V battery systems. Compatible with LiFePO4, AGM, GEL, Flooded, and user-customized batteries. Perfect for RVs, vans, and home backup.
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Estimated delivery time: 2–5 business daysShipping Policy.
Return & refund policy

Shipping, Returns & Refunds Policy

Shipping

  • Free standard ground shipping on orders $49.99+ (before tax).
  • Orders below $99.99 are charged a $10 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
Specs
Downloads
FAQ
Reviews

HQST 100 Amp MPPT Solar Charge Controller, 12V/24V/36V/48V Negative Grounding Controller, w/ Smart Bluetooth APP Control, Low-Temp Cut-Off, LCD Display, for Lithium, Sealed, AGM, GEL, Flooded Batteries

Our new100Amp MPPT solar charge controller offers high tracking efficiency of up to 99% and a peak conversion efficiency of 98.7%, about 30% higher than PWM. With Bluetooth app control, you can monitor all data in real-time. It also features low-temperature cut-off protection for LiFePO4 batteries, preventing damage to your valuable batteries. Ten protection mechanisms and an active cooling fan system ensure consistent efficiency at all times. Perfect for all off-grid applications, including RVs, cabins, motorhomes, and boats.

MPPT Real-Time Monitoring
LiFePO4 Battery Activation
Low-Temperature Protection
Port & Terminal Layout
20% Space-Saving Design
Download
Paring
Functionality
What's in the Box
Rated Solar Charge Current
100A
Solar (PV) Input Voltage
150 Voc Max.
Solar (PV) Input Power
1200W/12V; 2400W/24V; 3600W/36V; 4800W/48V
Battery System Voltage
12V/24V/36V/48V
Battery Types
Auto-detected: Flooded (FLD), GEL, Sealed, AGM Manual Setting: Lithium Iron Phosphate (LiFePO4), User-customized
Self-consumption/No-load Loss
12mA (12V), 10mA (24V), 8mA (36V), 6mA (48V)
System Wiring Grounding
Negative Grounding
Operating Temperature
-13°F～113°F (-25℃~45℃)
Fan-on Temperature
Exceeds 113°F (45℃)
Storage Temperature
-40°F～176°F (-40℃~80℃)
Parallel Charging Function
Support Parallel Connection, Up to 9 Units
Communication Port
RS485 (RJ12)
Wiring Cable
2 AWG (Recommended)
Product Weight
5.7 lbs (2.6 kg)
Product Dimensions
7.9 x 3.7 x 10 in / 200 x 260 x 93 mm (L x W x H)

HCC100HTR-FC-Manual

Download

Does this have a low-temperature shutdown function?

Yes, it does. It features low-temperature charging (below 32℉) and discharging (below 5℉) cut-off protection for LiFePO4 batteries (not for sealed), preventing damage to your valuable batteries.

Do I need to be connected to the internet or cellular networks when using the app control?

No, our app control and monitoring is via Bluetooth connection. As long as your phone is within range of the Bluetooth device (10m/33ft), you can access and connect to monitor and adjust settings.

Can its parameters be adjusted without the Bluetooth app?

Yes. You can adjust the parameters using the buttons on the controller. Refer to the user manual for detailed instructions. However, we highly recommend using the Bluetooth app, as it is easier and more convenient for operation and monitoring.

What size wire can be connected to this charge controller?

We recommend using 2 AWG or larger wire. When it comes to cable gauges, the lower the gauge number, the thicker the wire.

Why is my controller flashing the error message E02?

E02 flashes when the controller detects relatively high voltages. When a Li battery is fully charged, its BMS generates a high voltage (about 18V) and then stops charging. This does no harm to your controller or battery.

My controller stops charging when it is nearly at full load (100A).

If this happens, please contact our support team. You can find our contact information in the user manual.

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