Posts Tagged ‘india’
Solar Power Packs
Tuesday, March 22nd, 2011
How many Solar cells are required?
Hi all
I have a motor which runs on Battery power. The motor is 350 W and I have 3 batteries of 12 V, 12 AH. What would be the Solar Panel size required for charging this battery pack.
Can I get solar cells in Bangalore to build my own panel ?
Thanks
Salil
About 450 watt-hours – that sounds like an electric bike battery. Is it 36 volts?
What you need is to find a 200-watt panel with a max power voltage of 42 volts or more, or two, 100-watt panels in series. 100-watt panels are not the mainstream, anymore, so you may have to go with 165-watt.
You would also need a charge controller for the battery pack. I’ve seen some electric bikes here with a switching power supply for their charger. For those, I believe you could wire the charger directly to high voltage DC, and it would work. But you would need to supply the mains voltage times 1.4 to the charger. That means 150 volts at least in my area, which implies 6 panels. Expensive, unless you already have such an array for other purposes.
Sorry, I don’t have a source for individual cells. They are sold on craigslist where I live. But my personal opinion is that building your own panel is a poor value – it costs almost as much, and won’t last very long.
Portable Solar Power Pack – Part 2
|
|
Jump-N-Carry JNC300XL 900 Peak Amp Ultraportable 12-Volt Jump Starter with Light $60.99 Ultra-portable jump starter can be stored virtually anywhere and weighs just 9 lbs. Delivers 900 Peak Amps of jump starting power 27″ #4 gauge cables provides efficient power transfer to vehicle’s battery Built-in flashlight is great for emergencies and everyday use 12 Volt outlet to power accessoriesA great balance of power and portability, the SOLJNC300XL packs the punch of 900 Peak Amps of sta… |
|
|
Cobra CPI 480 400-Watt 12-Volt DC to 120-Volt AC Power Inverter with 5-Volt USB Output $23.95 Cobra 400W DC-to-AC Power Inverter CPI480 Power Inverters… |
|
|
Set of 12 Battery Operated Realistic Flickering Flame Tealight Candles Flameless / Smokeles $3.99 Flame free, smoke free, worry free candles (set of 12) Battery operated (batteries included) Flickering LED light realistically simulates burning candle These tealights will fit in any votive or tealight holder. On/Off button on bottom of each candle…. |
|
|
Mr Beams MB360 Wireless LED Spotlight with Motion Sensor and Photocell – Weatherproof – Battery Operated – 140 Lumens $20.65 … |
|
|
SE Wireless Motion Sensor Light – 10 Super-Bright LED $9.95 Instantly add motion-activated light for security and safety – indoors or out*Infrared technology senses both movement and heat for fewer false activations*Compact (3″ x 3″) and lightweight (4.3 oz) lets you install almost anywhere; easy-mounting slot *10 super-bright LED cast pure white light, last for 100,000 hours, sip battery power*Wire-free installation, operates for months on 3 AA batteries … |
|
|
The History Channel : Renewable Energy , Natural Environment Homes : Going Green Living – Solar Power , Wind , Biofuel & More : 2 Pack $25.01 In the young 21st Century, two realizations are dawning on the world’s population: we are hopelessly dependent on petroleum, which is only going to get more expensive; and global warming, caused mainly by our burning of fossil fuels, will impact civilization in ways that we’re only beginning to grasp. Stepping in to fight both of these massive problems are the rapidly evolving technologies that ha… |
|
|
Energizer Rechargeable Batteries … |
|
|
Sanyo Eneloop Ni-MH Charger and 8 Rechargeable AA and 4 Rechargeable AAA Batteries $35.90 New, improved eneloop kit in colors eneloop – ready to use rechargeable battery. Since its launch in November 2005 eneloop has become well-known around the world as it has revolutionized the consumer-use rechargeable battery segment with its unique features: * rechargeable approximately 1,000 times * coming pre-charged, making it usable immediately after purchase * its unique design departing from… |
|
|
Duracell Instant USB Charger with Lithium ion battery / includes universal cable with USB and mini USB, $18.00 Includes universal cable with USB and mini USB. Compact on demand power. 1 charger, 1 cable. 5 volt/1150mAh rechargeable lithium-ion battery. USB power port. On/off switch, charging status light (illuminates when the charger is operating). Charging indicator light. In port used to charge the charger with the provided USB cable. Additional Run/Talk Time: iPod Classic: Up to 50 hours. iPod Nano: Up … |
|
|
New Trent iCruiser IMP1000 11000mAh External Battery Pack and Charger for iPad2, iPad, iPhone 4S 4 3Gs 3G (AT&T and Verizon), iPod Touch (1G 2G 3G 4G 5G), HTC Android EVO, Blackberry, Samsung Galaxy S, Droid, Nintendo, Sony PSP and much more $76.95 This is the 4th Generation USB type power bank which is compatible with latest iPad 2. It will never let your smart phones and Tablet PCs run out of battery. This compact and ultra long-lasting backup battery will let you carry the power source where ever you go. When you travel, there’s no need to charge your device through an electrical outlet, THE IMP1000 IS THE ultimate POWER SOURCE! Take this… |
