Micro Solar Panels with Wire, 5PCS 5V 200mA Photovoltaic Solar Cells Kit 110mmx60mm / 4.33''x 2.36''

I love these little panels. I have several $40 solar spot lights on the eaves of the house. The lights and switches last forever, but the solar panels are unpredictable. In the past, I had to buy a new solar spot light if the panel went south. Now, I just glue a couple of these little micro panels on the bad panel face, connect them in series, and re-wire from the bad panel to the micro panels. So $40 for a new spot versus $6 to extend the life of the old one. There's a slew of other uses I'm anxious to try out.

These must be mounted by the user. They also must be soldered together, wires supplied. You must know the difference from series and parallel connections. This will change the output voltage of the connected array. Do not over heat when soldering. The output current is higher than most small panels, so you must have a charge controller to prevent over charging the battery.

When I first ordered these solar panels there were 4 types. Five piece without wires and five piece with wires also ten piece without wires and ten piece with wires. When I checked the current description I don’t see the 2 ten piece sets anymore. What happened. If I want to order another set of ten solar panels without wires I won’t be able to. I like the sets I originally ordered. Now I can’t order any more ten piece solar panels without wires.

I took some measurements in full direct sunlight. Here are the numbers for those who are wondering whether one of these panels would be enough to power your electronics project. I measured 118.6 mA without any load, 52.8 mA with a 100 ohm load, and 99.6 mA with a 47 ohm load.

Used to repair existing garden solar led lights. Test with multimeter first. Otherwise as long as your electrical calculations are correct it’s a great way to make old garden led lights work again. Finish is holding up so far.

When using solar, if you connect in series, they should increase voltagewhen connected in parallel, should increase power... as in amps.so when I connect in serious, they should be 5 x 5 volts = 25 volts. nopein parallel, 5 x 200 mA should equal 1.0 A. ... nope. only reaches 700 - 800 mA in direct sunlight, clear sky, in southwest Texas.

Honestly I was impressed. I was getting near 100% of the ratings. Glued a few together and created a parallel array that gives me 2A easy. Hooked up a solar USB charger cable and I just leave it out there recharging my small portable power packs( in a weather proof box) I use them to then charge my USB based devices at home. Not bad at all for cheapo cells! Made for a fun little project. You can get a good usb charger from Voltaic.

I'm gonna be honest, I no longer trust anybody's specification claims anymore. As this was the first of many projects I needed to know I could get a real 200mA @ 5v out of these little panels. The plan was to use 2 es in parallel to give me the required current to keep a 16450 3.7v cell charged via a charge controller. Ultimately, the batter would charge some patio lamps after converting them from old D-Cell batteries. Lately, when it comes to just about any specifications claimed, the rule of thumb is now to assume half. In this case, I got 111.8 mA measured on a very high quality meter in full sun in Houston, TX. It is a little better than half, I suppose. but to use these in my project means I'd need to parallel 4 of them to ensure I'm delivering 400 mA or better. I won't be returning these as I'll find some project that fits their 100 mA output range eventually. But, for now, Back to hunting for some panels that actually deliver. I'll probably just seek out a bunch of 3 Watt @ 5 or 6 V and see what happens. I really wish, vendors would be more truthful with their specs and quit wasting so much of our time. If the panel produced 200 mA @ 5v I would give it 5-stars without hesitation.