Side by Side Comparison of: Blovess vs Batteries vs Universal Power Group vs ECO-WORTHY

I have now purchased at least 6 of these and have them all in use, they work well for keeping batteries charged for emergency communications.

It does what it is supposed to do. Just be aware that it is not weather proof. There is no documentation saying that it is weather proof, but I have verification that it is not. Just make sure that it is housed where it won't sit in water or get a lot of direct precipitation and you should be fine.

I use this controller along with a 30Watt Solar Panel to keep the motor battery charged while my motor home is in summer storage. So far (after a month of use) the panel and controller are working perfectly. I was skeptical as to whether this device was any good since the price is so low but to my surprise, it is working as good as the more expensive models. Maybe it won't last as long but at the price - who cares. I'll simply order another one if this one goes out. I recommend it highly.

Works well with my 30W solar panel charging a 12V battery to drive a 5W pond pump. I put this in a water proof enclosure in the backyard. Haven't had an issue in a few months now.

So far so good, I have a battery, panels, and LED lights hooked up in a test environment, next to install in the real world. I am going to use this and a simple battery to power some led lights for my porch area in my backyard.

So far, works great. It sits in a water resistant enclosure outside. Still working great to keep a 12v battery juiced. My rig has a photocell switch which turns on a led after dark. I could have built the circuit myself, but at this price I couldn't pass up the time saving.

use this small charger panel to keep my jeep battery ready to go . works well

Purchased as booster for tractor. Mounted quickly on shed - had no start problems since!

hope it can maintain my generator battery so when I need it, it will be ready!

great for leaving on my dump trailer, i never have to charge or worry about a dean battery!

First off my battery was charged a few weeks prior to installing this panel, at the time of instillation the battery read 12.23V. So I ran a week long test prior to writing this review. I'm using it to maintain the battery on my riding mower. I read all the reviews and decided to proceed with this solar panel instead of a larger one. Lets begin with the alligator clips, they are junk! The negative clip was broken upon opening, and the positive clip fell apart after a day. But, since I planned on cutting them off anyway, it did not affect my review. I'm only posting this part since some of you will be using the alligator clips as the sole means of attachment. I temporarily mounted the panel to the hood of my riding mower, so disregard the zip ties. I hooked the panel up on a sunny day and mowed the 3/4 acre lawn, not massive, but not a 10 minute job either. Upon completing the mowing the battery was at 12.67V. So I parked the mower next to the deck instead of the garage hoping my days of hooking the mower to the trickle charger in the garage were gone. over the next week, we had one day of scattered clouds followed by five days of thunderstorms and overcast, not a single bit of direct sunlight during those five days. At the end of the week, the battery read 12.73V. I know some of you are thinking, half a volt is nothing. But what this proves is the fact that in one afternoon, under use the battery did not loose any power as usual. In fact it charged from 12.23-12.67. Over the next six days the charger was running at less than 25% normal sunlight and the battery still charged from 12.67-12.73. I have not disconnected the charger, since I crimped on terminal end loops and hard mounted it to my battery. This also goes to prove that there is no drainage during night or bad weather, it also proves the waterproof claim.I will post an update on the 14.4V cutoff claim once/if the battery reaches that point. I am completely satisfied with this solar panel and can now leave my riding mower outside and clean up some space in the garage. To some of you this may be a sin, but my mower has been outside for years and still holds up, I keep the rust off and maintain it regularly, just need more space in the garage.UPDATE: 11 months later this thing still keeps the charged battery from draining. It sat all winter and the mower fired right up this spring, over the past 8 winters I have had to charge the battery and continue charging it once or twice a season. Still cannot comment on the 14.4V shutoff, as the Battery maintains around 12.85V-13V. The plastic is holding up well, I would recommend adding some flowable silicone to keep moisture out. I used RTV and it discolored the plastic where I applied it on the bottom edges.

I love it!!!! exactly what I was looking for................remember.............this is a solar, trinkle charger...............not a quick 10 amp charger................I am very happy with my purchase.

Voltage setting seams low, will not get higher then 12.8 volts, with the panel putting out 20 volts.Would like to see 13.8 to 14.2.

Does what I need it to. I did notice without a battery the voltage on the load pins is not regulated.

Crapped out on me after about four weeks of use. Four weeks of use at Burning Man over three years, with most of the circuitry covered in caustic lakebed dust the entire time. So I can't blame it too much. Seems fine for the price, will probably replace it with another of the same one. (It is junk, don't get me wrong.... but what do ya want for $10?)

Does what it says it will do. My only concern is that the unit draws power from the batteries during the night to activate its LED lights. It would be nice if you could turn off the display lights until needed, but still keep it connected fully so the batteries recharge in the day, but don't discharge during the night.

Works as expected. The first one I received had a screw missing on the battery connection. Sent back and received the replacement fast. Recommend this for simple systems.

works for my solar panel which is 40 watt,, I bought a small voltmeter and hooked that up too, I dont get any voltage at the load though which puzzles me, although I have a couple of these around I have not got around to checking them out.

Does a great job keeping idle batteries charged...

Works as expected,

As most others have said - I think this is a decent unit for the money, and works well for it's intended usage.I have this hooked to my Jon Boat 12v deep cycle battery. I keep the boat outside during the summer months, leaving the battery in at this time, as thus far it has maintained a steady 12 volts. I don't fish every day, so it has plenty of time in between trips to get the charge back to where in needs to be.

woks great, but don't expect huge output. It works for a trickle charge.

Exactly what I was looking for. I have a tractor that always seems to have a dead battery when I want to use it. I finally bought this panel and mounted it to the body. It has been months since I last fired up the tractor, and yet when I just grabbed the key on a whim, it starts right up. Great for that slow trickle charge to keep the battery topped off.

it works

They work good you just can't tell how much power is going through them.

Cheap, useful solar controller. Nothing fancy, and the heat sink is dicey. It works.

This product works as described.

Wish I had spent the extra $10-20 on a better controller. The battery charge indicator lights don't appear to be accurate, load cuts off when there are still 2 out of 3 red LEDs lit. So basically all you know is that the battery is either full (3 LEDs lit) or about to die on you (2 LEDs lit). Otherwise it appears to be charging my battery effectively, and does cut off the load when the battery is too low.

This device does a good job keeping a battery charged. However... if you lose the connection to the battery (blown fuse or corroded connection, etc.) the solar cell voltage (in my case 22vdc) goes directly to the load. For a load that is rated for +12vdc, this can be risky. Lo-power electronics could be zapped. Not a deal breaker for my usage, but something to be aware of.

used on my garden fence battery this summer, seemed to help but it didn't keep battery at full charge. could have been battery....

ok

Poor mounting design. The tiny screws must self thread into the plastic - over 100lbs. of force on 4 milimeter screw.

It works lime it is supposed to but not too sure it is waterproof. There is moisture in it we will see if it lasts

This is a trickle charge so don't get too excited,,,, it takes a longtime to charge up a 12v battery

Clips too flimsy

The load works well in the beginning after two(2) weeks it stop working

After maybe a week of operation, the controller malfunctioned. It will still take in the panel voltage and charge the batteries, but the load terminals have no output. 2 stars because this is actually still useable (I can connect the loads to the battery directly if I really need to). Spend a little more. This one is now a backup for a worst case (better than nothing)

Battery meter stopped working

I hooked it up and everything worked just fine for one day. Day two the battery voltage dropped and the load switch opened as it is supposed to. I charged the battery all day and finally the charge switch open because the battery was full (again like it is supposed to. However, the load switch never did close again so I'm returning it.

Stopped working after a few days. Seller was great on refunding purchase.

Pretty weak. As expected.

The bracket is SO WEAK! I can only relate the mounting bracket as toothpick strength. I will test the panel in the field, but already looking for a replacement bracket.

Leaves a lot to be desired.

Seems to be too weak for my purposes.... its putting out 20 volts but the amperage is so low it will not make up the 0.20 volts I'm loosing over night in my application.

Don't like the clips it came with they already broke one battery didn't maintain charge

will not charge a double A battery

THis stopped working after only one month and now the return window is closed.....

I am giving it a one because the load has stopped working after less than 10 uses. I set it up with a switch to some 12V lights in my shed and yes it's a 12V toggle switch. I don't need a light in the shed most of the time so other than showing my setup to 2 people I used it 3 or 4 times and the last time the lights quit. I got out my meter and the panels sending a charge, the battery has charge but the load is dead, nothing coming out of the unit. I recommend to look for something better which is what I will be doing next.

This controller worked great - for about 3 weeks. Easy to use and hook up. But it just died last night. No power provided to the load despite power from both the battery and the solar panel.

Controller represented as a 12VDC controller. When connected to a 21VDC Peak solar array and a 12VDC car battery the output is a stable 6VDC. No specs provided in the packaging. I cannot comment if this is just a problem of the wrong electronics put in the wrong case/housing, but I would not buy again as it was miss represented in the details represented here.

Lasted a couple days. Quit charging. I'm out the money and no charge controller.

It lasted for about a week. I've been slowly and incrementally uping the solar coming in, and the drain going out. And it blew at just under 2 Amps input. So Cheap build and wildly under spec proformance.

Sent it back

Tried to use this to charge my boat batteries. Didn't work. Just buy the trickle charger and be done with it.

Too small to do anything

Less than 3 months after purchase it was dead - no output. Will have to check on the guarantee. Just checked and there is NO warranty!

does not work at all. i would have sent it back but i have taken the aligator clips that were on it ( what a joke thoes were) and replaced them with round terminal connectors to fit my battery. after a day of no improvement on my battery i hooked them to the meter to find that even in 90 degree direct sunlight ti wasnt pushing any energy through itself over any given period of time.

I was trying to solve the problem of a lawn mower battery always going dead even after replacing the battery several times. I wanted my husband to keep the lawn mower in the shed and not in the garage which takes the place of my vehicle. He needed the outlet in the garage to charge the mower with the electric battery charger. When I saw this, I was thrilled! Maybe he wouldn't need to hog up the garage anymore! Not so! He used it for about half of the summer and then the little clips started to break. They don't clasp on anymore. They are tiny and brittle. What a bummer! I dislike products that are so cheaply made that they don't last very long. Do not purchase this item.