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HQST 100A 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

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$199.99

$ 90 .99 $90.99

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About this item

  • Bluetooth APP Control & LCD Display:With a built-in Bluetooth module, you can download the ""ChargePro 2.0"" (new version) or ""PVChargePro"" (old version) app for real-time monitoring, which stores 300 days of historical data. The LCD screen and buttons on the machine allow you to check device operating data and modify controller parameters. Note: Bluetooth connection is effective within a 10m/33ft range (in an unobstructed area).
  • Low-Temp Cut-Off Protection for LiFePO4:This HQST 100A MPPT solar charge controller features low-temp charging (below 32℉) and discharging (below 5℉) cut-off protection for LiFePO4 batteries, preventing damage to your valuable batteries. You can manually switch on and off this function. This controller can also activate dormant LiFePO4 batteries that have turned off due to over-discharging.
  • Improved High-Efficiency Charging:The HQST 100A MPPT charge controller uses advanced MPPT technology, achieving a high tracking efficiency of up to 99% and a peak conversion efficiency of 98.7%, which is about 30% higher than PWM. This maximizes energy from your solar panels to charge your system. It supports 12V, 24V, 36V, and 48V battery systems and is compatible with lithium iron phosphate (LiFePO4), sealed, AGM, GEL, flooded, and user-customized battery types.
  • Parallel Charge Extension Function:To increase the charging current for your single battery bank system, you don’t need to reinstall the entire solar panel system. You can connect up to 9 of our MPPT controllers (M4880F/M48100F models) together using parallel charge cables (not included) to charge the same battery pack, meeting high power charging requirements. Ensure all controllers are set to the same battery voltage.
  • Active Cooling Fan System & Comprehensive Safety Protection:Two built-in fans start cooling automatically when the charge controller runs at high power or exceeds 113℉, ensuring consistent efficiency. Our negative grounding controller offers 10 protections against overcharging, over-voltage, over-current, overheating, and reverse polarity, maximizing protection against system faults and installation errors.



Product Description

 HQST 100A mppt solar charge controller
mppt solar charge controller
Rated Solar Charge Current 100A
Solar (PV) Input Voltage 150 Voc Max.
Solar (PV) Input Power 1500W/12V; 3000W/24V; 4500W/36V; 6000W/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)
  • 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.

  • 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.

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

  • 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.

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


Bryan Spicer
Reviewed in the United States on March 22, 2025
Much more information and adjustment options
Review lord
Reviewed in the United States on March 15, 2025
Absolutely love it, simple and to the point, stackable and does a good job.If it had a higher max pv voltage it would be a 5 star mptt charger.
Customer
Reviewed in the United States on March 10, 2025
The host balancing cable only works for 20a, 40a, 60a hqst controllers. The hqst balancing cable does not work for 80a and 100a models. Hqst says you have to diy your own but hqst has no schematic for the connectors and wiring. Hqst doesn’t know how to do this becuase hqst just rebranded the 80a and 100a controllers and have no technical support for it.
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