Round Shaped Solar Energy Panels Monocrystalline Silicon Material Without Frame

3.8watt Round Solar Panel charging for Plastic solar light lids Mason jars Solar Mosquito control mini traffic light

Product Description

1. Each solar cell is in new condition and not susceptible to micro-crack

2. A proprietary anti-reflective coating provides superior color uniformity

3. Laser-cut for exacting measurements and precision

4. Can be incorporated into several different devices

5. Simple to install or add to your existing product.

6. Small space required for installation.

7. Ready to use, they require no frame or special modifications.

8. For connection, just solder or crimp to the copper tape.

9. Light weighted, very strong and weather resistant.

10. Ideal for OEM and hobby applications.

MATERIALS

Epoxy is a type of liquid resin known for its good adhesive properties and resistance to water degration.

That is why they are used for laminating solar cells and is also used in boat building too. They are usually

identified by their amber or slight brown colour. They also have high electrical insulation and good chemical

resistance. However, in the long run, they can age prematurely under the Sun, turning yellowish and

become more brittle.

How to choose the correct voltage for your products:
 

Basic principle:
 

(1)The solar panel voltage is best to be 1.5times higher than the storage battery, in order to fully

charge the battery, such as: 3.7V Lithium Battery ===== 3.7*1.5=5.55V. =====> The optium voltage

for solar panel charging this lithium battery is 5.5V, you can choose 6V. Voltage lower than 5V is not

a good idea for fast charging;

12V Lead acid battery ==== 12V*1.5=18V ====> The optium voltage for solar panel is 18V, 17.5V is

also OK. But voltage lower than 17V will not be a good idea for fast charging.

(2) The voltage of solar panel is not the higher, the better, because during our R&D, we must

consider the charging current, and the battery protection. If the charging voltage is too high, the

battery might be damaged. And when the voltage is too high, the charging current would be weak,

and the charging speed would become too slow.

3.7V Lithium Battery ===== The solar panel voltage better not be higher than 6V.

12V Lead acid battery ===== The solar panel voltage better not be higher than 18V, because of the

above two reasons.

Do you understand above now, please? If there is any other question, you can feel free to ask me

anytime.

FAQ

Q1 Are you a factory or trading company?

A Yes, we are factory, supplying OEM/ODM service.

Q2 Can you accept OEM service?

A  Yes, we can. Qty is not the only standard , more qty, less cost.

Q3 How about your after sales-service?

A 1. Guarantee time: one year, but solar panel 10 years

   2. Spare parts:1% spare parts will be shipped with your order.

Q4 How about your payment terms?

A  We accept T/T, LC

Q5 What certification do you have?

A 1. CE,

    2. According to your need , do the certification or report , if you have a big order.

Q6 How many day about delivery time?

A 1. Sample delivered in 3-5 days.

    2. Order delivered in 15-20 days.

Q7 Which port shipping goods?

Ningbo port/ shanghai port/yiwu port