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Most Recent Questions
Recent Question:
Is it safe to leave continually plugged into cig lighter?
Recent Question:
Can two or more panels be connected in parallel to increase wattage at 12v
Recent Question:
Is it possible to over charge the battery with this?
Questions with Most Recent Answers
Question:
Will this product charge 8 volt batteries. I have 6- 8 volt batteries in my golf cart.
Question:
Is it safe to leave continually plugged into cig lighter?

Customer Questions & Answers for
Amorphous Solar Panel - 7 Watts

Item# 28650
"The 7 Watt Amorphous Solar Panel works in direct sunlight, low light, hazy and even cloudy conditions to charge a 12V battery. Product Style Battery charger, Battery Type 12V, LED Light No, Dimensions L x W x H in. 12 13/32 x 15 3/4 x 3/4, Panels qty. 1, Battery Included No, Watts 7, Includes Solar panel, 6 ft. wire w/battery clamps, Material Amorphous solar cell, aluminum frame. Sturdy aluminum frame Weather-resistant 7 Watt panel Built-in trickle charger function is ideal for use with cars, boats, tractors, RVs, water pumps and more Blocking diode prevents loss of charge Includes 6 ft. of wire and battery clamps 12.4in.L x 15.75in.W x 0.75in.D"
Customer Questions & Answers:
24 Questions
 | 
51 Answers
Overall Rating:
4.445 out of 5
4.4
out of
5
(101 Reviews)101
Product Details

Questions & Answers for Amorphous Solar Panel - 7 Watts

Question

can i hook two of these to a single battery?

can i hook two of these to a single battery? is for a house in the woods that we leave a battery to have electricity( basically just for lights).

.
asked 2 years, 4 months ago
by
Luciano88
on Amorphous Solar Panel - 7 Watts
+7points
7out of 7found this question helpful.
4 answers
Answers
answer 1
Wel-Bilt Expert
Two of these seven watt solar panels can be hooked up to a single battery. To be safe a charge controller should be used to prevent over charging.
 
Products from my answer
"NPower Solar Charge Controller - 52 Watts, 3 1/2 Amps"
4.7 out of 5(6)
 
 
 
 
 
answered 2 years, 4 months ago
by
WelBiltExpert13
+11points
11out of 11found this answer helpful.
answer 2
Yes I have 2 hooked in my house right now on a single battery. but im thing of going two 4 and see how it works.In full sun I get any where from 13.8 to 20.8 volts and that seams darn good to me.But I mite add another battery to get more amps.
answered 2 years, 4 months ago
by
Brinkman
 - Sterling,IL
+3points
5out of 7found this answer helpful.
answer 3
Yes, but what would work better is two batteries, hooked positive to positive, negative to negative, brought to a full charge, and THEN put a panel on each battery (the same as two on one battery).
The reason I suggest two batteries, is the deeper a battery is discharged, the more current it takes to bring it back up to a full charge. Adding a second battery will buffer the drain you put on your setup, allowing for a faster full recharge.
answered 2 years, 3 months ago
by
DemolitionMan
+13points
13out of 13found this answer helpful.
answer 4
Yes, but...
Make sure you hook them up in parallel. This will increase the current and not the voltage (assuming both panels have the same exposure to the sun).
Hooking them up in series with increase the voltage and not the current.
Since adding multiple panels in any configuration will increase the power output, I would recommend a charge controller, even a cheap PWM one, to protect your battery.
answered 4 months, 2 weeks ago
by
Satcom
 - Irving, TX
+1point
1out of 1found this answer helpful.
Question

compatible with lithium ion batteries?

Compatible with lithium ion batteries?
asked 5 months, 1 week ago
by
Treedodger
on Amorphous Solar Panel - 7 Watts
+1point
1out of 1found this question helpful.
1 answer
Answers
answer 1
Wel-Bilt Expert
This solar panel is designed to provide a slow charge for deep cycle or AGM style batteries. Lithium ion batteries could be charged with this type of solar pane, but it is not advised and could cause damage to the battery.
answered 5 months, 1 week ago
by
WelBiltExpert13
+1point
2out of 3found this answer helpful.
Question

what is the min, max temp range this unit will work in?

asked 11 months ago
by
vgdhfrfm
on Amorphous Solar Panel - 7 Watts
0points
2 answers
Answers
answer 1
Wel-Bilt Expert
The temp range for this unit is -40 to 185 degrees F.
answered 11 months ago
by
WelBiltExperts
+1point
1out of 1found this answer helpful.
answer 2
I have been using the panels in NE Iowa for several years with no issues. (+98 summer, -20 winter)
answered 6 months ago
by
dnick23
 - Clarksville, IA
+2points
2out of 2found this answer helpful.
Question

I put the panel in the window of my barn and put a meter on the clamps. I have 22 VDC output. Is this safe to hook up to any 12 V battery?

asked 1 year, 1 month ago
by
Anonymous
on Amorphous Solar Panel - 7 Watts
+1point
1out of 1found this question helpful.
2 answers
Answers
answer 1
Wel-Bilt Expert
This solar panel is safe to use with any 12 volt automotive style battery. The DC output produced by the panel will vary due to sunlight conditions, but a 22 volt output is not abnormal.
answered 1 year, 1 month ago
by
WelBiltExpert11
+2points
2out of 2found this answer helpful.
answer 2
that is what mine has read, and I have it hooked to a battery with no problems. It keeps my fence battery charged up
answered 1 year, 1 month ago
by
farmer71
+2points
2out of 2found this answer helpful.
Question

will i need 1 or 2 chargers

I have 2 batteries in my boat with a selector switch. will this charge both batteries or would i need two chargers? do i put the selector switch to off or to the both battery setting? does this need an overcharge controller?
asked 1 year, 2 months ago
by
mrlmd
 - cudjoe key, fl
on Amorphous Solar Panel - 7 Watts
+1point
1out of 1found this question helpful.
2 answers
Answers
answer 1
Wel-Bilt Expert
This charger will provide .6 amps of 12 volt power. It can work on two batteries that are connected to each other in a 12 system, but a panel on each battery would charge better. A charge controller is not required for solar panel that provides less than 15 watts.
answered 1 year, 2 months ago
by
WelBiltExpert13
+2points
2out of 2found this answer helpful.
answer 2
At 7 watts there is not a need for overcharge and I believe it is built into the charger. Mine is hooked on a diesel dump truck with two 12 volt batteries and it keeps them topped off. This is designed more to keep them from losing charge in storage than actually charging a discharged battery. The switch would be to both.
answered 1 year, 2 months ago
by
farmtom
 - new tripoli, pa.
+1point
1out of 1found this answer helpful.
Question

If this panel puts out 7 watts, would it be able to turn a 1.5 watt dc fan (like found in a computer).

If this panel puts out 7 watts, would it be able to turn a 1.5 watt 12 volt dc fan (like found in a computer).
asked 2 years ago
by
Anonymous
on Amorphous Solar Panel - 7 Watts
+1point
1out of 1found this question helpful.
2 answers
Answers
answer 1
Wel-Bilt Expert
This solar panel cannot be connected directly to a DC fan. If both the DC fan and this solar panel are connected to the same 12 volt battery, the output from the panel is enough to keep the fan running without the battery's charge diminishing.
answered 2 years ago
by
WelBiltExpert11
+1point
2out of 3found this answer helpful.
answer 2
7 watts is peak power output, and current would be less than .5 amps which should be enough to run your tiny fan,
answered 1 year, 3 months ago
by
ELROYP2A
 - Texas
+4points
4out of 4found this answer helpful.
Question

Will this overcharge?

It doesn't say anything about a regulator or module that shuts off the charge if it is battery is charged. Does this continue to feed power to the battery if the battery is charged?
asked 3 years, 4 months ago
by
Thatguy2012
on Amorphous Solar Panel - 7 Watts
+19points
19out of 19found this question helpful.
3 answers
Answers
answer 1
Wel-Bilt Expert
This panel, as well as any system under 15 watts, will be safe to use without a charge controller. It has built in protection and will not overcharge the battery.
answered 3 years, 4 months ago
by
WelBiltExpert29
+26points
38out of 50found this answer helpful.
answer 2
This is basically a trickle charger - as the battery voltage comes up the battery itself will act as the regulator. I have one of these hooked directly to a 100AH deep cycle battery on the boat and it works fine without a secondary controller - doesn't overheat the battery or cause electrolyte loss.

If you're charging a very small wet cell battery or using it for other kinds of work you may need a secondary controller.
answered 3 years, 2 months ago
by
57Scotty
 - Illinois
+15points
18out of 21found this answer helpful.
answer 3
There is no regulator built into this panel. It will charge the battery anytime the output voltage of the panel exceeds the voltage of the battery. Do you need a charge controller for this panel? Some sources say any panel over 5 watts needs one. Others say differently. I have had this panel on my gate opener battery, which is a garden tractor size battery, for over three months now, with no regulator. I have seen no ill effects so far, and really don't expect to see any. Don't take my word for it, but I really don't think this panel has enough power output to damage a battery of this size or larger by overcharging it.
answered 1 year, 3 months ago
by
RRRancher
 - Texas
+10points
11out of 12found this answer helpful.
Question

Can you hook this up to your battery while using a power inverter

Can you hook this up to your battery the same time while useing a power inverter
asked 3 years, 1 month ago
by
Anonymous
on Amorphous Solar Panel - 7 Watts
+3points
11out of 19found this question helpful.
4 answers
Answers
answer 1
Yes you can hook it up to the battery. The power inverter will emit a beeping sound when the batteries go below a set voltage amount.
I think one 7 watt solar panel is a bit small in watts to use it to charge a vehicle battery in less it is more or less just a Trickle charger for more than one day.. However, if you do want it to do that you need to get a Charge Controller of some type shown in the catalog. It may take a couple days to charge a vehicle battery using this small unit.
I have three 7 watt panels going through a charge controller and charging two Aux batteries in my Motor home.
I keep the Power Inverter hard wired to the batteries, however I do not use the inverter unless the batteries are fully charged.
It takes my three panels up to two days to fully charge them.
 
Products from my answer
"NPower Solar Charge Controller - 52 Watts, 3 1/2 Amps"
4.7 out of 5(6)
 
 
 
 
 
answered 3 years, 1 month ago
by
joetheragman
 - Chula Juanna
+8points
8out of 8found this answer helpful.
answer 2
Wel-Bilt Expert
This solar panel can be connected to a battery when a power inverter is being used. This panel provides the battery with 7 watts per hour in ideal conditions(placed in direct sunlight, not cloudy). Your battery charge will drop accordingly if the items running off your inverter draw more than 7 amps.
answered 3 years, 1 month ago
by
WelBiltExpert11
+8points
11out of 14found this answer helpful.
answer 3
Absolutely...
answered 2 years, 3 months ago
by
DemolitionMan
+4points
4out of 4found this answer helpful.
answer 4
I can't think of any reason why you couldn't do this.
answered 1 year, 3 months ago
by
RRRancher
 - Texas
+3points
3out of 3found this answer helpful.
Question

Can I hook this up to my boat battery and leave it hooked up all winter to keep the battery charged?

asked 3 years ago
by
cls2
 - Kansas
on Amorphous Solar Panel - 7 Watts
+3points
4out of 5found this question helpful.
3 answers
Answers
answer 1
Wel-Bilt Expert
Yes, you can use with a boat battery as long as it is 12 volt. It should work, but may not if for some reason there is still a large draw on the battery when idle.
answered 3 years ago
by
WelBiltExpert29
+5points
5out of 5found this answer helpful.
answer 2
Yes BUT the big question comes in where you live, and store the boat. first make sure the battery is topped off with DISTILLED water (cooking off water with deposits or chlorine in it will kill the battery). Next The panel needs light to work... use accordingly
answered 2 years, 3 months ago
by
DemolitionMan
+4points
4out of 4found this answer helpful.
answer 3
Yes, this panel will not overcharge your battery and will keep it fully charged as long as it is in direct sunlight most of the time. Even on cloudy days or rainy days, it will still be supplying some current to the battery. It doesn't require full sunlight to produce charging current, although it will generate a good bit more current on a sunny day.
answered 1 year, 3 months ago
by
RRRancher
 - Texas
+5points
5out of 5found this answer helpful.
Question

Can I use this panel with battery still hooked up?

The battery in my travel trailer has a very small drain on it when in storage, mostly from the propane leak detector. Is it okay to use this panel while the battery is still hooked up or should I just disconnect the battery from the trailer?
asked 2 years, 4 months ago
by
Anonymous
on Amorphous Solar Panel - 7 Watts
+1point
1out of 1found this question helpful.
3 answers
Answers
answer 1
Wel-Bilt Expert
This solar panel can be connected to the battery while it's still hooked up to the travel trailer. It will work for your application provided the battery drain from the trailer(including the propane leak detector) is minimal. This panel provides the battery with 7 watts per hour in ideal conditions(placed in direct sunlight, not cloudy).
answered 2 years, 4 months ago
by
WelBiltExpert11
+1point
1out of 1found this answer helpful.
answer 2
I have one hooked up to cover the drain on my battery for the exact same reason. The battery is never disconnected And I have no issues what so ever. In My instance I mounted a pipe flange on the tongue of the trailer. the panel on a painted and sealed piece of plywood, another flange centered on the back of the plywood, a 45 degree elbow on that flange and a eight foot pipe in between the panel and tongue (2 4 ft pieces and a coupler) . I painted the pipe, and replaced the clamps with rubber trailer type 2 conductor connectors to the battery cable that I already had set up for a maintenance charger, Been running this for four years without a hitch. (my panel DOES have a reverse polarity blocking diode, If the new ones don't they are easy to install, and can be bought for a couple bucks at radio shack as rectifier diodes, you will want something that will handle a minimum of 30 volts 15 amp, to handle any heat issues from sitting in the sun, NOT a small signal diode, other than that, there are no critical specifications, even a 1n9001 or similar would work but if put in the housing it would cook in a relatively short time
answered 2 years, 3 months ago
by
DemolitionMan
0points
1out of 2found this answer helpful.
answer 3
There is no need to disconnect the battery for charging with this panel. It should keep the battery fully charged with no problem.
answered 1 year, 3 months ago
by
RRRancher
 - Texas
+2points
2out of 2found this answer helpful.
1 2 3