Sunforce 50044 60-Watt Solar Charging Kit
Sunforce 50044 60-Watt Solar Charging Kit
The Sunforce 50044 60 Watt Solar Charging Kit gives you another reason to love the sun — it’ll help keep your batteries charged. This kit is excellent for cabins, remote power, back-up power, and 12-volt battery charging. The kit includes a PVC mounting frame, 7 Amp charge controller, 200-watt inverter, and wiring/connection cables. And with the built-in blocking diode technology, this charger kit is designed to protect against battery discharge at night. You can also use this kit to maintain the charge on any 12-volt battery for clean, silent operation of various electronics, such as deer feeders and landscaping pumps. The 50044 features a built-in ultra-bright blue LED charging indicator, and is a great choice for automobiles, recreational vehicles (RV), tractors, all terrain vehicles (ATV), boats, electric fences, telemetry and more, and it is even effective on cloudy days. This battery charger kit is made of durable ABS plastic and amorphous solar cells and has a maximum temperature range of -40 to 176-degrees Fahrenheit.
The Sunforce 50044 60-Watt Solar Charging Kit gives you several more reasons to love the sun. It provides the power you need, while helping you save money and protect the environment. This kit is ideal for cabins, recreational vehicles, remote power, back-up power, and 12-volt battery charging. It comes with everything you need to start producing up to 60 Watts/4 Amps of clean, free power in all weather conditions.
Convenient Power That Helps You Save Money and Protect the Environment
Everything You Need to Power Up
With built-in blocking diode technology, this solar charging kit is designed to protect against battery discharge at night. You can also use this kit to maintain the charge on any 12-Volt battery for clean, silent operation of various electronics, such as deer feeders and landscaping pumps. The included charge controller features a built-in ultra-bright blue LED charging indicator, and is a great choice for automobiles, recreational vehicles, tractors, all-terrain vehicles, boats, electric fences, telemetry and more.
About Amorphous Solar Power
Solar panels convert sunlight into an electric current, they do not store power. Sunforce Solar Charging Kits are primarily used to recharge 12-Volt batteries (not included), which store and provide usable power. The included 200-Watt power inverter allows you to use traditional 110-Volt appliances with this system. The included Sunforce 7-Amp Solar Charge Controller must be installed to prevent any connected batteries from overcharging. Once fully charged, it is normal for the charge controller LED to turn off and on as the battery voltage fluctuates from the discharge/recharge cycle.
- Amorphous solar charging kit provides up to 60-Watts of clean, free, renewable power
- Designed for RVs, cabins, homes, boats, back-up and remote power use, and more
- Weatherproof, durable solar panels can withstand impacts from hailstones travelling 50 miles-per-hour
- Includes four 15-Watt solar panels with durable mounting frames, a 200-Watt power inverter, a 7-Amp solar charge controller, and a wiring kit with accessories for easy installation
- Built-in, ultra-bright blue LED charging indicator
Most Helpful Customer Reviews – By HMMWV_the real thing santa clara, CA USA
Update 2-20-2008 – goes with graph “photograph” #3 above – pink line is power and blue line is amps from the panel x 10 to share the graph. The X axis is panel voltage. Data was acquired using an Agilent dummy load with programmable voltage in 1V steps from 1V to 22V (open circuit voltage on the panel) on a partially cloudy day in winter sun. Expectations are for 2-3 times performace in summer sun provided the panels don’t get too hot. These are on my house roof laying flat on a 3/12 pitch facing due south which is suboptimal but easy for me to do. Be sure to read the photo notes. Sorry about the colors excel defaulted to!
This is a MPPT chart (maximum power point tracking) – you can see that the panels are optimized for charging a 12V wet cell right out of the box. Charge current turns on when battery voltage drops down to 13.0 VDC and turns off at 14.2 VDC with the supplied charge controller in the kit.
The only other interesting fact in 2 months is to keep your panels clean. My maximum current was 5.0 A on a cold morning with bright sun until it rained hard and washed the panels clean. The current went up to 7.0 A maximum right after the rainstorm. Below is the original review – these panels have been running constant for 2 months now into 3 parallel deep cycle marine cells (315 AH) connected to the prosine inverter below to drain the energy made.
When reading the power/current chart you should keep in mind the amps have been multiplied by 10 so they use the same Y axis (so 20A on the chart corresponds to 2.0 A panel current) Watts are actual volts*amps. This was taken in the winter with partial clouds – expectations are for a X3 improvement during summertime but its still february and I’m in the northern hemisphere so we’ll have to wait and see. Basically an MPPT charger won’t gain but a few watts with this panel so it’s not a good investment unless you already have one laying around.
(Begin original review after buying panels)
I never seem to be overwhelmed by the latest shipment of product from China, but this one seems to show some promise and shows signs of good cost engineering and a complete design that can be set up quickly by one person with very little effort. I’d give it 5 stars if it were well packed, but my purchase turned into a shipping fiasco.
Most ALL solar installations are rated in $/watt much like new homes are rated in $/sq ft. We’ll get to the sq ft bit later. Here you are getting 60W for 320 dollars or about 5.33 $/watt. Compared to a similar wattage panel, the BP solar 365U rated at 65W and priced (street) at 399 or 6.13 $/watt the amazon package seems to be a good deal when you consider it comes complete less battery (we’ll hit that one later too)
In fact, the amazon package deal includes a xantrex 175 watt inverter with a .15A “idle” current designed for solar systems where current consumption must be minimized. It even includes a simple diode/switch “charge regulator” with 2 leds to indicate panel voltage and battery is full but lacks the ability to tell it what type of battery you are using (full is defined at 14.2 volts give or take so it’s for wet/flooded cells). Neither of these are big buck items, but they do set you up for a complete small scale solar kit minus the battery out of the box, which is impressive.
Oh yes, the battery. I also ordered the duracell 480W inverter+28AH battery with this panel so I’d have a battery. Also made by Xantrex, it’s a nice piece to complete the system. I made the mistake of ordering it with the solar panels (read on)
So how does China produce a complete kit for a lower $/watt price than professional solar companies like BP solar, GE, Kyocera, etc? Well – it’s the sq ft part we forgot about for a while. This uses 4 panels @ 15W each to get up to 60 watts with a simple parallel adapter included in the kit. The BP solar is one panel about the size of 1 of these 15W panels, or put another way, is 1/4 the sq footage. So if you are planning on covering your roof with these, think again because you’d need a really big house and have lots of 7A charge diodes and 175W inverters kicking around when you are done. The reason for the 4:1 size difference is the China panels are made using a silicon deposition on glass technique with a very thin film and correspondingly thin output, while other manufacturers use a silicon wafer production method that is roughly 4x more efficient in area, and somewhat more expensive as a result.
Ok – now onto packaging. We need to get this from China to Amazon and finally to the consumer. On the first attempt FEDX carefully placed my fragile glass solar panels on the concrete then put 2ea 60lb batteries on top of them, cracking the glass on all 4 panels. After returning that to amazon, we tried again, this time without the batteries and shipping the system by itself. FEDX again noted shipment damage which wrecked 1 of the 4 panels, but running on 3/4 panels it does work, just not with full output. Amazon has given up because they will only ship and ruin something twice instead of making fedx pay up for piling 120 lbs of batteries on top of the glass panels and poking through the box & styrofoam the second time so I am still in negotiation with them about the shipment, however the product does deserve mention while I have it.
As for mounting, a very clever system was designed to support the panels out of 1″ PVC tubing with elbows and T’s – all of this is assembled with a singular bolt/wingnut style and the pipes have slots milled into them to ensure that the panels will line up one way or another without breaking after you get them. It has a prop-up leg system for use on the ground or can lay flat if placed on a roof that is already angled towards the sun. There isn’t a provision for connecting multiple systems together, however you could make one out of sprinkler pipes you probably have.
All this really needs to be a well designed solar kit is 1) better packaging and 2) a battery. Even with 25% of my panels broken and removed from the system, it still managed to charge a car battery in under 1 cloudy winter day.
Don’t forget the battery – and don’t have it delivered with your solar panels. As for emergency power, 60 watts won’t do much for you but keep your generator battery charged and ready to go when the power fails. My natural gas genset is rated for 12,000 watts or 200 of these 60 watt 4-panel kits (800 panels) which would cost $64,000 and still not provide power at night, like the quiet genset does. With 12,000 watts I can comfortably run my whole house. Considering these natural gas gensets can be had for under $3000 they are clearly the best solution for whole house power backup systems.
My use was to keep my seldom used 12VDC batteries all charged in the back yard. Regretably, amazon’s lack of proper packaging and refusal to negotiate with FEDX over damage means I’ll probably put in a 12VDC charger inside my house and run the low voltage 12VDC wiring outside to the batteries that need a trickle charge.
One last reliability issue – having seen 5 broken panels now I can see an advantage to the professional panel systems – these use the glass just as a cover & weatherproofing plate. The cells underneath are not damaged if the glass breaks. On the amazon system, the cells are deposited on the back of the glass, so if it breaks, by default so does the entire cell.