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  1. Solar Charge Controllers
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  4. MPPT
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  7. Flooded
Go Power MPPT Solar Charge Controller - 20 Amp - 12V and 24V

Go Power MPPT Solar Charge Controller - 20 Amp - 12V and 24V

Item # 342GP-MPPT-8520
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Solar Charge Controllers
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Go Power MPPT - 342GP-MPPT-8520
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20-Amp solar controller with MPPT technology optimizes solar panel output to provide maximum amperage to your batteries. Protects battery from harmful overcharging. Durable, fully sealed construction is perfect for industrial and commercial vehicles. Lowest Prices for the best solar charge controllers from Go Power. Go Power MPPT Solar Charge Controller - 20 Amp - 12V and 24V part number 342GP-MPPT-8520 can be ordered online at etrailer.com or call 1-800-496-5010 for expert service.
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Go Power Solar Charge Controllers - 342GP-MPPT-8520

  • 20 Amp
  • Go Power
  • MPPT
  • Gel
  • AGM
  • Flooded
  • LED Indicators

20-Amp solar controller with MPPT technology optimizes solar panel output to provide maximum amperage to your batteries. Protects battery from harmful overcharging. Durable, fully sealed construction is perfect for industrial and commercial vehicles.


Features:

  • 20-Amp solar controller prevents harmful overcharging of your batteries
    • Monitors and adjusts output from your solar panels
  • MPPT technology optimizes and converts panel output to provide maximum charge
  • Automatic multistage charging switches modes as the battery charges - helps extend battery life
  • LED indicators monitor controller status
  • Built-in safety features protect your RV's electrical system
  • Easy mounting with included hardware
  • Durable, aluminum construction dissipates heat and resists vibration, water, and dust


Specs:

  • Application: 12V and 24V battery and solar systems
    • Works with lead acid batteries
  • Maximum solar array current: 20 amps
  • Voltage:
    • Battery range: 9V - 31V
    • Maximum solar panel input voltage: 85V
  • Operating temperature range: -40 F to 140 F
  • Weight: 1.38 lbs
  • Dimensions: 4-7/16" long x 3-1/2" tall x 1-5/8" deep
  • 5-Year warranty


mppt 20 amp solar controller

This solar controller prevents harmful overcharging by adjusting the power generated by a solar panel before it reaches your batteries. It uses maximum power point tracking technology to compare solar output to battery voltage and converts that output to an optimal amperage. Also, this controller is a great fit for solar systems on industrial and commercial vehicles since it is built to resist water, dust, and vibration.


Automatic Multistage Charging System

Using a multistage charging system, the controller automatically switches voltages while the battery bank charges. This accelerates the charge, but also helps extend battery life by adjusting the voltage during the different modes. The controller is compatible with multiple battery types and includes a preset charging profile for lead acid batteries.


Charging Modes

  1. Bulk: This mode charges at the full rated load for a quicker recharge time. As the name suggests, this is where the bulk of the charging happens. It typically charges the battery to at least 80% capacity.
  2. Absorption: This mode provides controlled voltage to ensure a full charge. Once the battery reaches between 80% to 90% capacity, the absorption state will kick in and start charging at a regulated voltage. In each charging profile, this mode is set to last for 30 minutes after the bulk charge is completed.
  3. Float: Once the battery reaches full charge, this mode maintains a lower voltage to compensate for self-discharge. This reduces battery stress and minimizes gassing and water loss.

Practical, Convenient Features

This solar controller is constructed with IP68 rated housing that is fully sealed to resist vibrations, water, and dust. This allows the unit to function properly in a variety of environments.


It also comes with a sensor that enables temperature compensated charging. As the controller experiences changes in temperature, the sensor compensates for those changes by adjusting the voltage during charging to help extend the life of your batteries. This protects from overcharging in hot temperatures and undercharging in cold temperatures.


Lastly, the controller includes several built-in safety features to help protect your equipment. The charging process will shut down if the controller starts to overheat and when an overcurrent is detected. Also, if the battery or solar panel is wired incorrectly, the green LED indicator will shut off.


How It Installs

The solar controller mounts vertically near the battery. It is wired to the solar panel using MC4 cables. Then, the battery bank is wired to the terminals on the controller. You can also install a fuse or circuit breaker (sold separately) up to 30 amps between the solar controller and battery for additional current protection.


To install the battery temperature sensor, the ring terminal is installed to the battery and the terminal block is plugged into the controller's temperature port.



80432 Go Power! MPPT Solar Charge Controller - 20 Amp - 85V DC

Replaces Go Power GP-MPPT-85/20

Installation Details 342GP-MPPT-8520 Installation instructionsAlternate Instructions 342GP-MPPT-8520 Installation instructions




Customer Reviews

Go Power MPPT Solar Charge Controller - 20 Amp - 12V and 24V - 342GP-MPPT-8520

Average Customer Rating:  4.0 out of 5 stars   (4 Customer Reviews)

20-Amp solar controller with MPPT technology optimizes solar panel output to provide maximum amperage to your batteries. Protects battery from harmful overcharging. Durable, fully sealed construction is perfect for industrial and commercial vehicles.

by:

Review from a similar MPPT in Solar Charge Controllers


no fault of etrailer.com, but instead 100% the GO Power MPPT product,
seems there is a broad range of specifications WITHIN "their PUBLISHED specifications".
the MPPT states capable of 150 voc (this is still on their pdf however it is only a SURGE rating not a REAL RATING) then their fine print states "100 voc dc" (see link below "for proof" (this is a wide range by dropping 50 voc dc) and array power limited to 1040watts (as stated on my original pdf from Go Power) at 12 vdc on before limiting occurs. So a SIX panel array of 100 watts each with a volt open of 22.5volts in series .....means 6X22.5= 135 voc.(should be good to go right)..can't do it.... so a max of 6 panels 6x22.5vdc VOC = 135 voc dc BUT can't do it ...blows the unit apart.....and needs warranty repair.....which I did....so it will not handle THEIR RATED SPECIFICATIONS! you will need to be AT 100voc on your design specs which is not stated anywhere
which states a MAXIMUM of 100 voc so that's only 4 100watt panels at 22.5 voc dc which of course is only 400 watts input power that this unit will handle... I'd challenge you to double check and triple check ALL OF YOUR PANEL specs before purchasing this unit as I've wrapped my brain around it and don't see how ANY modern PANELS will not achieve MORE POWER than this MPPT charger will handle unless your on 48V ONLY system..
to be short and simple I looked at perfectly matching 4 of these panels from reynogy for 200 watts each and guess what they have a VOC rating of 27 voc each so in series they are 108 voc so that should work due to being in a real world solution near 100 voc rating of this MPPT controller as most panels never really achieve 100% power in the real world....
Before dealing with me on tech support this MPPT controller was rated at 1040 watts ON THEIR PDF ... once I proved to them that IT WOULD NEVER ALLOW IT.... now their tech support documents state 800 watts and in reality it might be able to handle 800 watts (IF PERFECTLY MATCHED PANELS ARE INSTALLED) but I wouldn't rely on it..I changed out the controller to a victron controller and I keep this one because I can't return it and I might want to ADD portable solar panels some day which I AM SURE it will handle.
I'm a retired aircraft mechanic from United airlines since 1979!




by:

Review from a similar MPPT in Solar Charge Controllers


Service is Absolutely The Best
Great
follow up




by:

Review from a similar MPPT in Solar Charge Controllers





by:

Review from a similar MPPT in Solar Charge Controllers




4
4

See what our Experts say about this Go Power Solar Charge Controllers

  • Y-Connectors To Split Cable to Solar Charge Controllers For Standard MC4 Connections
    To split the cables coming from your solar panel you will need one each, Go Power # 34267049 Expansion Branch 1 male / 2 female, and Go Power # 34267040 Expansion Branch 1 female / two male, connectors. This assumes that you are using standard MC4 connectors rather than some proprietary cables such as you might find on a Furrion panel. Of course you will need two more cables. If you let me know the length I can spec those also. If you still need charge controllers you could use the Go...
    view full answer...
  • Go Power Solar Controller That is Compatible With Lithium Batteries
    There isn't a setting you can use on your Go Power solar controller for lithium batteries if it is not compatible, so you will need to upgrade your solar controller to one that is compatible. I'm not sure which solar power system you currently have, so I'll list out the options for solar controllers from Go Power, and each of these are compatible with lithium batteries. - 10 Amp: Go Power PWM Solar Charge Controller with USB Port - LCD Digital Display - 12V # 34280503 - 20 Amp: Go Power...
    view full answer...

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Info for this part was:

Employee Wilson B
Updated by:
Wilson B
Employee Matthew E
Updated by:
Matthew E
Employee Daron K
Edited by:
Daron K
Employee Alex H
Written by:
Alex H

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