85 watt 17v 4.95 A solar panel hook up questions

[akjota]

I have 2 Shell SQ85-P solar panels that i want to hook up to a 12 Volt Marine/RV deep cycle battery. The battery will power a 12V water pump on a 1000 liter water storage tank collecting rain water for watering our garden.
The solar panels are:
Maximum Power-85 Watts
Maximum System Open Circuit Voltage-600 V
Fire Rating- Class C
Field Wiring-Copper Only, 14 AWG Min Insulated fpr 90 C Min
Short Circuit Current-5.45 A
Rated Current-4.95 A
Open Circuit Voltage-22.2 V
Rated Voltage-17.2 V
Series Fuse-20 A
Bypass Diode-Installation Guide 025671
Serial Number-027670 C 1 13 05 19671
I am new to the solar panel world, so please bear with me if i ask silly question. i am excited to learn and appreciate your help!

Do I hook up the two panels in series or parallel?
From the mounting place on my roof to the battery is 40 feet. What gauge of wire and type will I need to use?
What charge controller do i need?

Thank you for your help!

[inetdog]

I have 2 Shell 2Q85-P solar panels that i want to hook up to a 12 Volt Marine/RV deep cycle battery. The battery will power a 12V water pump on a 1000 liter water storage tank collecting rain water for watering our garden.
The solar panels are:
Maximum Power-85 Watts
Maximum System Open Circuit Voltage-600 V
Fire Rating- Class C
Field Wiring-Copper Only, 14 AWG Min Insulated fpr 90 C Min
Short Circuit Current-5.45 A
Rated Current-4.95 A
Open Circuit Voltage-22.2 V
Rated Voltage-17.2 V
Series Fuse-20 A
Bypass Diode-Installation Guide 025671
Serial Number-027670 C 1 13 05 19671
I am new to the solar panel world, so please bear with me if i ask silly question. i am excited to learn and appreciate your help!

Do I hook up the two panels in series or parallel?
From the mounting place on my roof to the battery is 40 feet. What gauge of wire and type will I need to use?
What charge controller do i need?

Thank you for your help!

I have not heard of those particular panels before, and did not find anything on a quick Google search.

First, ignore the 600V figure completely. That just refers to the maximum system voltage that they can be part of. Basically the insulation strength between the cells and ground in the panel frame and j-box.

You cannot safely connect those panels directly to your battery without risk of overcharging and battery damage. You will need to get a Charge Controller (CC) to regulate the output of the panels.
The panels are what we refer to as 12V battery panels, since they are suitable to use with an inexpensive and inefficient Pulse Width Modulated (PWM) CC.
You can put the two panels in parallel without having to put an individual fuse on each panel and connect them to a PWM CC.
Or you can put them in series and connect them to a Maximum Power Point Tracking (MPPT) CC and get more useable power to your battery.

By rule of thumb 170 watts of panel rating will be good for a single 12V battery with an amp-hour rating between about 140AH and 200AH.

[Wy_White_Wolf]

What charge controller?

If PWM them parrallel

If MPPT then in series.

WWW

[Sunking]

What charge controller?

If PWM them parrallel

If MPPT then in series.

WWW

Ditto, that is all you need to know.

[Sunking]

I have not heard of those particular panels before, and did not find anything on a quick Google search.

If they are what I think they are, are only available to commercial and government agencies. Real popular with government for telemetry like river crossings, remote traffic counting speed//control/warnings. pipeline telemetry, etc... You also see them in Police Radar speed warning to slow traffic down.

Basically just really rugged panels made for some abuse and harsh conditions. Both Shell and Gulf Oil make them.

[akjota]

thanks for the info,

i am moving forward and when i got it all up and running i will give an update!

I have not heard of those particular panels before, and did not find anything on a quick Google search.

First, ignore the 600V figure completely. That just refers to the maximum system voltage that they can be part of. Basically the insulation strength between the cells and ground in the panel frame and j-box.

You cannot safely connect those panels directly to your battery without risk of overcharging and battery damage. You will need to get a Charge Controller (CC) to regulate the output of the panels.
The panels are what we refer to as 12V battery panels, since they are suitable to use with an inexpensive and inefficient Pulse Width Modulated (PWM) CC.
You can put the two panels in parallel without having to put an individual fuse on each panel and connect them to a PWM CC.
Or you can put them in series and connect them to a Maximum Power Point Tracking (MPPT) CC and get more useable power to your battery.

By rule of thumb 170 watts of panel rating will be good for a single 12V battery with an amp-hour rating between about 140AH and 200AH.

[SunEagle]

Somehow a couple of questions were missed.

What is the watt usage of that 12volt pump?

What is your 12 volt marine battery Ah rating and will it be enough to run your pump enough hours every day?

[akjota]

The Battery is;
Deka Marine Master DP 24 Dual Purpose
Group size 24
Flooded Cell
AH (Amp Hours 20) 65
MCA (Marine Cranking Amps) 685
CA (Cranking Amps) 685
CCA (Cold Cranking Amps) 550
RC (Reserve Capacity) 140 minutes

The pump is:
Groco Flo-Master CP-20 12Volt
5.5 Amps at 12 Volt DC
17 GPM

thanks,

akjota

Somehow a couple of questions were missed.

What is the watt usage of that 12volt pump?

What is your 12 volt marine battery Ah rating and will it be enough to run your pump enough hours every day?