If I order 4x 145w Solar Panels, Will just 1 charger controller be enough? 5x 12v 133ah Deep cycle batteries in parallel for a total bank of 665ahthese are the solar panelsany help would be highly appreciated! thanks!!http://www.amazon.com/gp/product/B007VPQP5Q/ref=gno_cart_title_2?ie=UTF8&psc=1&smid=A21XZF4K65PP5Y If I order 4x 145w Solar Panels, Will just 1 charger controller be enough? 5x 12v 133ah Deep cycle batteries in parallel for a total bank of 665ahthese are the solar... » Read More If I order 4x 145w Solar Panels, Will just 1 charger controller be enough? 5x 12v 133ah Deep cycle batteries in parallel for a total bank of 665ahthese are the solar panelsany help would be highly appreciated! thanks!!http://www.amazon.com/gp/product/B007VPQP5Q/ref=gno_cart_title_2?ie=UTF8&psc=1&smid=A21XZF4K65PP5Y « Show Less
1283048
A 30A Charge controller WILL be adequate and will work but it is a narrow margin for your 145 watt panels. I estimated the amperage on your panels @ 7.25 amps each, that put you right at 29 amps. Barring any solar fluxes that might tip the controller to temp shut down you should be ok.
1283049
Sorry 15 should be 15AMPs and 123 watts should be 145 watts.My typing stinks
1283050
Just a note these controllers wont do zip when the input amps are below 15. The two Panels most likely will not enough to fire is up. DM 145 Watt panel crank out on;y 7.7 each amps on a good day. I Bought this CC and had an electrician (Who Wasnt Cheep) confirm this about the CC. Dont get me wrone thee CC will work but you will need to put three 124 watt panels on it. If you want a CC controller that will do the two with ease. Check out the HF CC 30 amp 500 watt CC by thunderbolt. Its about the same amout of cash on amazon. Good luck on your decision.PS If you go with this one the manual stinks. Learn chinese Just a note these controllers wont do zip when the input amps are below 15. The two Panels most likely will not enough to fire is up. DM 145 Watt panel crank out on;y 7.7 each amps on a good day. I Bought this CC and had an electrician (Who Wasnt Cheep) confirm this about the CC. Dont get me wrone thee CC will work but you will need to put three 124 watt panels on it. If you want a CC controller that will do the two with ease. Check out the HF CC 30 amp 500 watt CC by thunderbolt. Its about the same amout of cash on amazon. Good luck on your decision.PS If you go with this one the... » Read More Just a note these controllers wont do zip when the input amps are below 15. The two Panels most likely will not enough to fire is up. DM 145 Watt panel crank out on;y 7.7 each amps on a good day. I Bought this CC and had an electrician (Who Wasnt Cheep) confirm this about the CC. Dont get me wrone thee CC will work but you will need to put three 124 watt panels on it. If you want a CC controller that will do the two with ease. Check out the HF CC 30 amp 500 watt CC by thunderbolt. Its about the same amout of cash on amazon. Good luck on your decision.PS If you go with this one the manual stinks. Learn chinese « Show Less
1283051
NO each controller can only handle 12 volt x 30 amp or 360 wattyour 4 panels will put out 580 watt If you use it in a 24 volt system it can handle 720 watts but it has a max input of 30 voltsso 2 controllers for your setup or get a higher amp controller if you plan to add
1229170
This controller has a max of 360 watts so you may want to look at getting one to handle 580 watts.
1283052
145watts *2 panels is 290watts --- 290watts / 12volts = 24.16amps under max sunlight and optimal conditions. Youll need to use 2 charge controllers or one that can handle 48.34amp. 2 charge controllers will work together to get the batteries charged. I currently am useing 3 with my 840watts and get about 70amps to charge 9 115amp/hr batteries.
1283053
31.666 amps is where you are with your 4 panels. I agree with AT... You need a larger charge controller or research using multiple controllers.
1283054
Look at the max amperage of the solar panel and multiply it by 4 if this exceeds 30 amps you will need a larger charge controller. Without knowing the max amperage of the solar panels my best guess is that it will be close. I suggest getting a larger controller.
1499930
Hello Sharon, It depends on how you plan on connecting them. Technically you can parallel the two together and use a single charge controller but this can become cumbersome with the wiring. You can also use the two kits independently to charge different batteries or the same bank. If charging the same bank it is best if you put the second kit on the opposite battery posts of the first one.Please contact us for any further inquiries - customerservice@carmanah.comGo Power! Team
778249
This is a rough guess but, 6x35ah is 210 total Ah, and if you have 100w panel/ 12v it's about ~8 amp max. But I find mine realistically charges about 5 amp hrs per hr. So 210ah/5amp is 42hrs of charge time. so you prob have 7-9 hrs in day of good charge, so 42/~8 is at minimal 4 panels... I live in midwest and have less sunlight per day. But I think 4 is about minimal. I work more with electrical consumption than I do with battery charging so someone else might have better charging math, but I am familiar with electrical systems. Hope this helps and sorry for all the math, just wanted to back my answer. Good luck. This is a rough guess but, 6x35ah is 210 total Ah, and if you have 100w panel/ 12v it's about ~8 amp max. But I find mine realistically charges about 5 amp hrs per hr. So 210ah/5amp is 42hrs of charge time. so you prob have 7-9 hrs in day of good charge, so 42/~8 is at minimal 4 panels... I live in midwest and have less sunlight per day. But I think 4 is about minimal. I work more with electrical consumption than I do with battery charging so someone else might have better charging math, but I am familiar with electrical systems. Hope this helps and sorry for all the math, just wanted to... » Read More This is a rough guess but, 6x35ah is 210 total Ah, and if you have 100w panel/ 12v it's about ~8 amp max. But I find mine realistically charges about 5 amp hrs per hr. So 210ah/5amp is 42hrs of charge time. so you prob have 7-9 hrs in day of good charge, so 42/~8 is at minimal 4 panels... I live in midwest and have less sunlight per day. But I think 4 is about minimal. I work more with electrical consumption than I do with battery charging so someone else might have better charging math, but I am familiar with electrical systems. Hope this helps and sorry for all the math, just wanted to back my answer. Good luck. « Show Less
887419
I would advise against running it in a two batteries to one panel setup. If one battery went bad it could/will cause the loss of the other battery. The charging controller in this unit is meant to work in a one to one relationship to a single battery. Properly wired it could possibly work as a temporary solution. Is it advised? No. Eventually there will be a massive failure when one battery in the circuit has problems and an overcharge hits the remaining good battery. I would suggest a Battery Tender 022-0165-DL-WH. This is a dual battery charger but is not solar powered.
991190
Yes, but beware, you probably want to charge more than just 1 battery, more like a small bank of batteries. For example, I have mine hooked up to a small bank of 8 SLA 12V batteries giving me about 1500 watts stored to power a 1200 W Inverter for appliances. It's like a solar powered battery pack so that I can work and have phone conversations in the most odd places (no generator noise in the background, just pure silence or nature noises, it's awesome). You'll want a decent charge controller (I bought a 10 Amp controller, which is overkill, but has the better charge-methods and pattern that I wanted). Good Luck! Yes, but beware, you probably want to charge more than just 1 battery, more like a small bank of batteries. For example, I have mine hooked up to a small bank of 8 SLA 12V batteries giving me about 1500 watts stored to power a 1200 W Inverter for appliances. It's like a solar powered battery pack so that I can work and have phone conversations in the most odd places (no generator noise in the background, just pure silence or nature noises, it's awesome). You'll want a decent charge controller (I bought a 10 Amp controller, which is overkill, but has the better charge-methods and pattern... » Read More Yes, but beware, you probably want to charge more than just 1 battery, more like a small bank of batteries. For example, I have mine hooked up to a small bank of 8 SLA 12V batteries giving me about 1500 watts stored to power a 1200 W Inverter for appliances. It's like a solar powered battery pack so that I can work and have phone conversations in the most odd places (no generator noise in the background, just pure silence or nature noises, it's awesome). You'll want a decent charge controller (I bought a 10 Amp controller, which is overkill, but has the better charge-methods and pattern that I wanted). Good Luck! « Show Less
232356
The safest way for both your equipment and your battery is to always use a charge controller. We have about 20 of these panels in use with MPPT type charge controllers purchased off eBay for about $10 each and they work great. These panels won't, however, keep up with a very big electric load. We use 9 amp-hour batteries with a continuous load of just under 100 milliamps, and with these solar panels our load stays powered an average of 12 hours per day (which is all we need). It's important to do the math to properly match your load requirements with a large enough solar panel, battery and charge controller. The safest way for both your equipment and your battery is to always use a charge controller. We have about 20 of these panels in use with MPPT type charge controllers purchased off eBay for about $10 each and they work great. These panels won't, however, keep up with a very big electric load. We use 9 amp-hour batteries with a continuous load of just under 100 milliamps, and with these solar panels our load stays powered an average of 12 hours per day (which is all we need). It's important to do the math to properly match your load requirements with a large enough solar panel, battery and... » Read More The safest way for both your equipment and your battery is to always use a charge controller. We have about 20 of these panels in use with MPPT type charge controllers purchased off eBay for about $10 each and they work great. These panels won't, however, keep up with a very big electric load. We use 9 amp-hour batteries with a continuous load of just under 100 milliamps, and with these solar panels our load stays powered an average of 12 hours per day (which is all we need). It's important to do the math to properly match your load requirements with a large enough solar panel, battery and charge controller. « Show Less
1734619
Zach, go to the website: Remember to calculate the maximum voltage you will receive. For example, I use a 24 volt system for five solar panels of 270 watts each. When the sun shines at high noon, I get about 35v going to the batteries. So I figure my watts limitation for the C60 Charge controller is 2100, but I am coming in at 1350 watts for five panels.
466629
A couple things. Your solar panels will not be able to keep with your battery's discharge if the discharge rate is higher than the charge rate. It might be able to slow it down but it won't keep up. This can be calculated (roughly) by the combined amp hours of your batteries, volts, and wattage of your system. Makes sense, right? Second, if your circuit is serial, your charge should be serial, too. You'd run the solar panels in series just like your batteries. The key here is a controller. Be sure you get a solar controller that is powerful enough to manage your system. This is an essential component and cannot be ignored. A couple things. Your solar panels will not be able to keep with your battery's discharge if the discharge rate is higher than the charge rate. It might be able to slow it down but it won't keep up. This can be calculated (roughly) by the combined amp hours of your batteries, volts, and wattage of your system. Makes sense, right? Second, if your circuit is serial, your charge should be serial, too. You'd run the solar panels in series just like your batteries. The key here is a controller. Be sure you get a solar controller that is powerful enough to manage your system. This is an essential... » Read More A couple things. Your solar panels will not be able to keep with your battery's discharge if the discharge rate is higher than the charge rate. It might be able to slow it down but it won't keep up. This can be calculated (roughly) by the combined amp hours of your batteries, volts, and wattage of your system. Makes sense, right? Second, if your circuit is serial, your charge should be serial, too. You'd run the solar panels in series just like your batteries. The key here is a controller. Be sure you get a solar controller that is powerful enough to manage your system. This is an essential component and cannot be ignored. « Show Less
243040
Frank, i have a Renogy catalog on front of me and don't see a 350 panel. This must be something new. And by 30amp charge controller I assume a PWM charge controller. Your panel can be 12 or 24v not both, unless this is something really new. You might try one of the solar forums or email Renogy support. Don't call tech support because i tried. Don't. Ok? Try Northern Arizona wind&sun or midnite solar forums. Also midnite solar has videos on youtube about everything. You should be able to charge a 12v battery with a 12v panel and charge controller-period. Unless the battery is no good. Put a voltmeter at the output of panel then the output of charge controller. Good luck.
1873945
These panels put out 5.25 amps each, so a 30 amp controller should be able to handle five of these panels. A charge controller is used to keep your batteries from being overcharged and as the battery state of charge increases, the controller allows fewer amps to get by it. A solar array that exceeds the capacity of the controller could cause system damage. Do not confuse volts and amps, remember that you are working with DC rather than AC, and short circuiting across the positive and negative wires is to be carefully avoided.
99421
Correct. You do not need a seperate charge controller unless you are putting more than 15watts to the battery. That's three panels! It says the same thing in the owners manual.Correction: I see this is for the 7watt panel. In this case that would be TWO panels total. I have the 5watt panels, so that is where the math came from. The 15watt limit before needing the charge controller still applies for all panels.
852803
ohm's law says 8.333333 etc. But most 12 volt solar panels are actually operating at a higher voltage than 12 because of the need to charge a 12v system you need a higher voltage my charge controller doesn't really start till 14.4, I'm going with the average 5.0-5.5 weather, wiring distance, number of connections can change the number. since my smaller charge controller is 30 amp. I would stay at 5 panels max. with a hefty diverter load. and if you have multiple panels how you wire them(parallel or in series) can be a big difference too.
1056068
Dear customer, you will need a branch connector if you want connect two panels in parallel.You can find the product here:http://www.amazon.com/Branch-Connectors-Connector-Solar-Panel/dp/B00BCWRB48/ref=sr_1_2?ie=UTF8&qid;=1376241228&sr;=8-2&k;eywords=MC4+Branch+connectorYou will also a Adaptor cable from the MC4 branch connector/MC4 connector to the charge controller. The length is to be decided by you. Thanks.
921246
Hey race walker, just about anywhere. I installed my panels on a motorhome that has been using two 12 volt 200 amp hr deep cycle batteries wired in parallel without solar. For the last 6 years I have used two GC-2 240 amp hr 6 volt golf cart batteries wired in series. I have always used this rule, get the newest, heaviest batteries that you can afford. In my case I have been served best by 6 volts golf cart batteries in series since my system is 12volts. Hope this helps
765122
Hi -- I am an electrical engineer and I use this panel to keep the three full size 12V deep cycle batteries wired in parallel on my camper charged. It does a really good job and I do not use a charge controller. I mount the solar panel vertically facing south so that in the summer when the sun is high in the sky and the temps are warm it receives less solar input, but in the winter the sun angle is low and I get relatively more charge and any excess battery heating will be less of a concern. The panel seems to be very good quality and has held up fine outside in Park City UT for over 9 months. The current from the panel in full sun should nominally be 5w/12v = .42 amps, which may be a little high for trickle charging a small motorcycle battery. Check for your battery specs on line. By mounting the solar panel vertically it will generate less current in the summer and avoid overheating. You can also probably mask the panel with tape to reduce output if needed. Also, I don't think charge controllers are too expensive for this size panel so that is an option. Hope this helps. ---Dan in Park City UT
1056070
Dear customer, you will need a branch connector if you want connect two panels in parallel. You can find the product here:http://www.amazon.com/Branch-Connectors-Connector-Solar-Panel/dp/B00BCWRB48/ref=sr_1_2?ie=UTF8&qid=1376241228&sr=8-2&keywords=MC4+Branch+connector You will also a Adaptor cable from the MC4 branch connector/MC4 connector to the charge controller. The length is to be decided by you. Thanks.
2233948
There are two types of charge controllers; PWM and MPPT. I have 3x 100w panels ran in parallel to triple my charge amperage. This maintains the panels at 12v, but triples the amperage. I have a 30a charge regulator, which is PWM. I have read, though, that MPPT is the newest and best charging technology available. The PWM regulators are cheaper, but you get what you pay for. My next charge regulator will definitely be a MPPT. Google it. You'll figure out the difference between to two. Just be sure that you size your regulator bigger than your solar panel array for room to grow, and so that you don't constantly put your charge regulator under too much stress from incoming amperage. Here's the charge regulator I purchased http://www.play.com/Electronics/Electronics/4-/46835087/789550567/TomTop-30A-12V-24V-Intelligent-LCD-PWM-Solar-Charge-Controller-Solar-Panel-Battery-Regulator/ListingDetails.html?_%24ja=tsid:13315|cat:46835087|prd:46835087&ef_id=Udt8FQAABKfxcsgO:20130709151438:s It works well, but now is starting to be a little troublesome with the display just after 9 months of use. Spend a little more money and get one that is MPPT, and make sure you have an LCD screen. It's nice to know the charge, draw, and basic voltage of your battery bank.