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Longde safety helmet

Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.

Reasons for choosing us
HARD HAT SAFETY HELMET
01Solutions to meet different needs

We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.

02Highly specialized team and products

Professional team work and production line which can make nice quality in short time.

03We trade with an open mind

We abide by the privacy policy and human rights, follow the business order, do our utmost to provide you with a fair and secure trading environment, and look forward to your customers coming to cooperate with us, openly mind and trade with customers, promote common development, and work together for a win-win situation.

CONTACT USCustomer satisfaction is our first goal!
Email us

Consultation hotline:0086-15900663312

Address:No. 3888, Hutai Road, Baoshan District, Shanghai, China

Longde safety helmet
Simple 1.2V AA battery Solar charger circuit | ElecCircuit.com
Simple 1.2V AA battery Solar charger circuit | ElecCircuit.com

22/8/2020, · A ,solar, cell radio used a 3V (or two 1.2V) nickel-cadmium battery or nickel-metal hydride battery in it. The battery can not be removed. It uses a mini-jack socket for charging. It is quite difficult to find such a ,voltage, charger. Here is the circuit to convert the ,voltage, from the general ,power, supply or ,Solar, …

Solar Panel Output: How Much Do Solar Panels Produce ...
Solar Panel Output: How Much Do Solar Panels Produce ...

How much energy does a ,solar, panel produce? For the sake of example, if you are getting 5 hours of direct sunlight per day in a sunny state like California you can calculate your ,solar, panel output this way: 5 hours x 290 watts (an example wattage of a premium ,solar, panel) = 1,450 watts-hours, or roughly 1.5 kilowatt-hours (kwh). Thus, the output for each ,solar, panel in your array would ...

How to Connect Two or More Batteries in Series and Parallel
How to Connect Two or More Batteries in Series and Parallel

Following this example where there are two 12V 200Ah batteries connected in series, we will have a total ,voltage, of 24V (,Volts,) and an unchanged capacity of 200Ah (Ampere hour). In off-grid wind and ,solar power, systems, the greater the direct ,voltage, for charging the batteries, the …

How to Power Your Appliances While Camping - 12 Volt Shop ...
How to Power Your Appliances While Camping - 12 Volt Shop ...

Power, your appliances with ,solar, panels. ,Solar, panels are becoming more popular amongst camping lovers and for good reasons. Although there are initial set up costs, once you use ,solar, panels you’ll be enjoying free ,power, almost anywhere. With ,solar, panels you can travel to remote locations away from mains ,power, and still use 240V appliances.

How to Power Appliances With Solar Panels | Home Guides ...
How to Power Appliances With Solar Panels | Home Guides ...

It's an oversimplification to imagine an appliance drawing ,power, directly from a ,solar, panel, ... or ,voltage,, of 12, 24 or 48 ,volts,. ... you usually need to wire ,several, panels together. ...

How to keep solar panel voltage at 24V? - Electrical ...
How to keep solar panel voltage at 24V? - Electrical ...

My 315 watt 24vdc panels normally output 39vdc to the MPPT charge controller, this is the way that amperage is created in the panel through ,voltage, (amps convert to ,volts, in dc without a load to consume them), you need to use a charge controller between the panels and ,fans, to limit the ,voltage, into the ,fan, (PWM controller will work just fine as long as it is 24v) , your ,voltage, will generally ...

How to wire solar panels in series vs. parallel
How to wire solar panels in series vs. parallel

26/8/2020, · When ,solar, panels are wired in series, the ,voltage, of the panels adds together, but the amperage remains the same. So, if you connect two ,solar, panels with a rated ,voltage, of 40 ,volts, and a rated amperage of 5 amps in series, the ,voltage, of the series would be 80 ,volts,, while the amperage would remain at 5 amps.

Solar Inverters and Voltage Drops - What you need to know.
Solar Inverters and Voltage Drops - What you need to know.

Normally, if you have a 20 amp AC circuit in a house it should be 12 gauge. At 100 feet you would want to jump up to 10 gauge to account for ,voltage, drop. If you take a DC ,voltage, at 20 ,volts, at 20 amps 12-10 gauge is plenty at close range. At 100 feet you would need 4 gauge minimum but more like 2 gauge to account for ,voltage, drop to be less ...

How to Wire Solar Panel to 12V Battery and DC Load?
How to Wire Solar Panel to 12V Battery and DC Load?

Related Post: A Complete Note on ,Solar, Panel Installation with Calculation & Examples The DC load (light & ,fan, etc) is directly connected to the charge controller and can be fed up by two ,power, sources. The direct load can be directly powered up through ,solar power, and a charge controller during the sunshine/day time and during the shading/night, the DC load can be powered up using the battery ...

Solar Powered Portable Fans for sale | In Stock | eBay
Solar Powered Portable Fans for sale | In Stock | eBay

Mini Portable Sun ,Power Fan Solar, Cell ,Fan, Clip-on Outdoor Fishing Camping. 3.9 out of 5 stars (178) Total Ratings 178, 82% agree - Well designed. $2.95 New. Portable Clip-on ,Solar, Cell ,Fan, Sun ,Power, Energy Panel Summer Cooler 2017. 3.6 out of 5 stars (12) Total Ratings 12, 100% agree - Quiet.