SCOUT SYSTEM REVIEW JULY 2022 SYSTEM CONFIGURATION: SCOUT with two charge controllers (GR400) 2000 Watt Pure Sine Inverter AGM Batteries Black & Decker 25amp AGM Charger 8-100 Watt Solar Panels (800 watts) TESTS RUN: 1) Power consumption with each AGM battery and full size Refrigerator (4 hours each); 2) 300 Watts of Solar Panels with two AGM batteries; 3) Power consumption w/2 AGM Batteries (3300 Watt Hours) and Refrigerator (11 hours) 4) Test Battery Charger after test #3 All of these tests indicated fully satisfactory performance! (details provide below), the only other test would be a long term test – which may be provided subject to usage. Evaluation of System Fabrication: a) The Scout Housing is advertised to take two 12V 1200 Watt Hour batteries; both GR400 were installed inside the Scout Housing, thereby leaving room for only one battery. This was not disclosed is the offering and may be an issue for some customers. Adding additional batteries is not an issue, however the external batteries do impede mobility. My Scout has a permanent home in the finished part of my garage which is next to refrigerator just inside the kitchen, thus only requiring a ten foot cord (10 or 12 ga. have both worked fine).; b) The wiring was first class with the quality and gauge of wire in the offerings.; c) The GR400 are not easily read being inside the housing, however the blue tooth works well enough to set up and monitor the charge controllers. The GR400s Bluetooth does not provide power consumption from the batteries, but does provide solar panel power input and voltage levels continuously for up to 14 days of operation. d) The two charge controllers consume about 50 watts per day and cannot be turned off unless the negative lead on the primary battery is removed. Hence the alternative to periodic charging is leaving the charger on with a Float Charge at all times when the system is not being operated. e) The 2000 Watt Full Sine Invertor is rated at 90% efficiency to output 120 volts AC. If one is planning a full time operation of the Solar Generator, a 96% or better Invertor should be considered, as well as use of Lithium Batteries; the AGM’s can be discharged to 20% although this would shorten the number of cycles available. f) The Black and Decker Charge leads to the battery get extremely warm when charging at or near the 25 amps. The 120 V lead is of sufficient gauge that this lead is not warm when the unit is operating. Benefits of a Modular Solar Generator: 1) Customization is possible over prepackaged solar generators available on the market. 2) The most likely components in need of replacement are the batteries which are simply removed via disconnecting the terminals from the old battery and reconnecting to the new battery. OVERALL PERFORMANCE: a) Testing 300 Watts of Solar Panels for one full day with an eyeball adjustment to the angle of the sun produced 80% efficiency (995 Watts input per the Charge Controller Bluetooth readout). b) Running the Full Size Refrigerator rated at 5 amps for 110 volts for 11 hours created a Depth of Discharge of 30% per the Bluetooth readout (for 3350 Watt Hours available computes to 1005 watt hours or 91.6 watts per hour consumed which was forecast based on a 3 hour run with a 240 Watt Hour portable solar generator). c) Two major considerations in sizing this system include: 1) The shortest day of the year for your zip code – readily available online/Google. In my case that is in December and the shortest day is about 10 hours. 2) Total power consumption expected in worst case scenarios – poor solar panel sunny day and expected peak power demand of your Load – in my case the 2200 watts/day under ideal conditions would be increased by the lack of Air Conditioning as well as less than ideal sunny days. In the above example there would be 1150 watt hours available less the 20% reserve of 670 watt hours required, thereby leaving a battery reserve of 480 watt hours. A judgement call is up to the system designer how much reserve to add via more batteries and or solar panels. Suggest Reference: AGM Battery State of Charge – workshoppist.com which addresses how to evaluate State of Charge (SOC) for AGM batteries independent of having a SOC device/tool. PS: If you are not comfortable hooking up terminals to batteries or reviewing available guidance on how to set up your system - you might consider the All-In-One units which require little system design and analysis

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