Solar panel power design and matching with batteries

Once you know the battery capacity requirement the next step is to determine the solar panel power required to charge the batteries. One of the key points in determining solar panel power is the number of hours the sun is on. Then there are two ways to determine the amount solar panel power needed to charge a battery. One method is the Watt-hour method while the other is the Ampere-hour method.

[@jakeliujakeliu]

Great video thank learn a lot from you. Please make more video Thank you

[@dinesh031NLW]

Thank you so much Sir!! I have been educated today!! Excellent explanation!!

[@jehuda100]

VERY useful point to use 4 hours of Sunshine in the Philippines. Sadly in other area is more complex (can have conditions of practically NO Sunshine for days). VERY VERY WRONG calculation! Use MPPT to get the Maximum Power Point Tracking to obtain the MAXIMUM Power at ANY time from the solar panels that you have to obtain the proper charging+matching to your battery voltage. Note that the Battery Voltage should be SMALLER than Voc of the Solar panel (Voc = Open Circuit Voltage). Best that battery voltage would be a little over Vmp of the Solar panel (Vmp = Voltage at the Maximum Power point). The Solar Panel specification: Voc, Vmp, Imp and Isc (Short Circuit when you get 0 Power since voltage is 0V = Short Circuit) are provided by the manufacturers for every Solar Panel (if you buy/get a Solar Panel without this information WORRY and probably you SHOULD NOT buy it).

[@kulkiikan8643]

I like your eplaination... nau am in good positions to culculate my solar usage

[@chauci14]

Excellent explanation but you forgot to apply the discharge depending on the type of battery because for most batteries you have to double up the Wh needed in order for the battery life to be appropriate

[@rodemarencio7959]

Salamat po Sir! 😊 laking tulong

[@kollenmaruti9451]

Thank you I loved your explanation

[@rickmantv6012]

Very impormative ser..

[@dexterroy]

There is an upper limit of how much current can be pumped into a battery for charging. For a 50AH lead-acid battery, thats around 15-16A. So, it's not like I can add more panels to charge faster. That's an important aspect to cover for off grid systems.

[@jawshua100]

4 hr is the optimum sun light for charging the battery. meaning u can charged the battery full within 4 hrs..but in reality full charged is withn 6 hr - 8 hrs due to some energy loses. Solar can captured energy as long as there is a sun light and as long as the is more storage for energy.

[@rickmantv6012]

Tama puhonan kailangan Jan..matagal ang serbisyo ng solar.. battery Lang kadalasan masira..inilipat Lang gastusin mo.sa loob ng ilang taon..nagagamit mo..piro ang solar.. support Lang Yan..di Yong siya Lang asahan mo..maganda Lang kung malaki power bank storage mo..kagaya ng series type ng battery..maganda 48volts type..din Yong inverter mo toroidal transpormer type..mppt mo ay 60amps...with BMS battery management system..din mga fuse and breakers..kahit aircon kaya..

[@Toast4Toasty]

Thank you for the very clear as crystal explanation Sir.

[@auwaldukduniya1979]

L

[@raphaelmanuel5284]

Very informative. Thanks Sir! What do you recommend setup para dito - Laptop (65w) - 2 Monitor (46w in total) - 1 docking station (135w) 9 to 10 hours usage sa gabi (5 times a week lang.) (Specific setup lang for home office). Thanks po sa suggestion

[@geinstein337]

246W, 48V, need 5Amps at least. If you will run this for 10h then you need 50Amphours of usable energy. Get a battery of 48V, 100Ah (5kWh) will be good. Since this is a relatively big system, you will need a 2-2.5kW solar panel system. Let us know if it works out.

[@HoneyBerighthere-Saysarath]

So your saying. Get a Smaller Battery for the 100wh solar panel. Got it, thanks.

[@shortwidgets]

Great explanation

[@jakeliujakeliu]

What does he means in tip 3 eliminate need of inverter?

[@geinstein337]

Means you apply the battery directly to a DC load. Some LED Lights and fans for example run on 12V DC. Most appliances and lights, however, run on AC. That makes the DC to AC inverter necessary.

[@nitunitu9911]

Super exp

[@kuryenteofficialvlogs6133]

Thanks for sharing Po idol p dikit namn Po Bago lang Po salamat

[@jbx907]

it still remains a big problem on the battery's side, what type? not everyone can afford lithium, lead acid even deep cycle batteries requires 10% charge capacity if you want the batteries to last, for a 50ah battery safe charging is 5A, and requires 10 - 12hoirs to fully charge on 10% charge rate, it not like lithium where 1C or charging at 50a on 50ah battery is allowed, some can charge up to 10C. making the battery larger is good but good chargers can convert a limited input amps to larger output thru buck circuit, just because you the solar can only send 5 amps, does not mean the output is limited to 5amps, unless your on PWM, it has to be a buck type charger, it can double the amps of sources.

[@angelitocortez4738]

salamat po kaalamang sine share ninyo.tanong ko lang po kung tatlong 395 watts na panel na naka series at gumamit po ako ng combiner box ilang amps po ang dapat kong gamitin.at ilang amps po ng breaker ang dapat ko din gamitin.

[@master_som]

battery 12 volt 125 ah x 8 = 48 volt 1000ah.( How many solar I need 🙏

[@JuanKlaro.tv90s]

Hi Sir, for a basic setup. Isn't it much more practical just to add solar panels, since battery's are way more expensive than solar panels.?

[@savvasbambos2669]

I want to run 100watt tv off grid for 15 hours a day. What size battery, solar panel, controller and inverter I need? Being with tight budget😢 Please if you can assist 🙏🙏🙏Tkx for your reply in advance

[@cakeinfo6510]

i need that projest too, please help us

[@henrinainggolan1827]

Dear Sirs, could you please assist me correcting my system. Currently, I am using 2 battery @190Ah - 12 v each, and I make a serial battery to be 24V system. On the other hand, I am using 8 panel poly @150 wp with system 2 serial and 4 parallel system. I use 24v 3000 watt psw inverter and scc mppt 60A. Could you give me your opinion with that? Thank you.

[@savvasbambos2669]

No reply 😢

[@sojiolaitan4678]

Its perfect

[@magajocca]

Thank you.

[@juangomez2014]

Thanks Sr. Great info and explanation.

[@MrDatswin]

i have 10 solar panels with 40v each. However, my 4 batteries are already down. how many volts do I need to replace my batteries if I intend only to buy 1?

[@heartinspirational]

Me when i see calculations without basic identification, i become loss, 1)what is the battery A you are working eg 50A, 100A, 200A, 2) what is the relationship between the W of the solar and the WH in the board, Without This questions answered i can't understand

[@Deeptruthtv-w8l]

I have 3.5kw charger controller, how many amp of solar panels do I need for it

[@geinstein337]

You don't need to worry so much about the amps of the solar panels. As long as you get 3500Watts (3.5kW), that's fine.

[@rommelbondoc1121]

Hello sir Greg! natagpuan din kita... kamusta po?

[@norbertnjuti2294]

thank you Sir for your explanation.

[@leonardndungu9570]

Thanks

[@victoradeogo8244]

You didnt tell us how you got 600wh, is that the total load you want to power? Because at some point you said 600wh battery, I am confused.

[@geinstein337]

kzbin.info/www/bejne/noXTf5iumNWfftk Please check this out. It's the energy requirement for a TV, lights, and electric fan, or the basic appliances of a house.

[@jordanesorrt2836]

napakagaling naman Sir. so mas mapapababa pala natin ang cost of solar power system pag 24v ang battery na gagamitin? ayos lang po ba na ang Ah ng battery na gagamitin is 12v*2 with 100Ah per battery?

[@geinstein337]

Yes definitely. Ayos lang ang 12V 100Ah x 2.

[@geinstein337]

May solar ka na Jordan Esorrt?

[@jordanesorrt2836]

wala pa Sir. plan ko mag setup ng solar sa bahay. kaya tamang nood ng videos sa pag install ng solar, correct panel and fuse sizing at batt capacity. magpatulong nalang ako mag install sa isang electrician to double check the right amps for breakers/fuse at wirings and with the help of solar power generator expert like you Sir.

[@lss-xw8qn]

meron po kayo video ng solar panel computation for grid tie system

[@user-ci7fe1jj8x]

اللهم بلغنا رمضان وصل اللهم على سيدنا محمد وعلى اله وصحبه وسلم 💕💯

[@nenealiza9737]

Hi sir ask lng...50 ah controller po ba Yan?

[@allapactvvlog8704]

good day po sir pwede po ba mag tanong kong pwede ba series conecction ang solar panel na magkaiba ang wattage nya 100watts at 60 watts thanks God bless po

[@geinstein337]

Henri ano yung problema ng system mo? Sa 1200W puede na ang 48V Battery system. Pero kailangan compatible charge controller mo.

[@hermzcz9448]

may tanong po ako sir,paano ko po macocompute yung time charging ng 12V 100AH battery using two 20W solar panel connected in parallel?thanks in advance

[@conenevicer6272]

Hlxh khdhi

[@reynabethavenido243]

Good day po sir ask kulang po mayroon po akong 4 na gel battery 12vdc 180Ah ang bawat isa anong solar charger ang dapat gamitin?

[@richardaustria3778]

Sir pa calculate nga PO sa setup ko? 4pcspannels 200wats ang Isa 2pcsbaterry 150 ah ang Isa Controllermppt60 ampir Inverter ko 6000wats Ano PO bang magandan parallel sa panel o series pati sa battery??

[@powershot9933]

???

[@edmondbanez8885]

boss tanong lang kung ginawang 24v yung battery edi kakailanganin ng 2series panel.. kasi ang isang panel ay 18v

[@oghenerumechris281]

That means your 3 solar panels have to be connected in parallel for the current to add up

[@geinstein337]

Not necessarily. Even if you connect the solar panels in series, the batteries will get the necessary curent to be charged.

[@geinstein337]

The function of the maximum power point tracking (MPPT) charge controller is to extract maximum power from the solar panels. From the maximum power of the solar panels, the current going into the battery will always be optimal. If you only have a cheaper pulse width modulated (PWM) charge controller, then it may be necessary to connect the solar panels in parallel just to increase the current going into the battery.

[@oghenerumechris281]

​@@geinstein337I am confused. You said, one would need a 3 100watt 5A solar panels to solve a 12.5A requirement without saying how they are going to be connected either in series or parallel connection. Can the three 100watt 5A solar panels be connected either ways series or parallel and still meets the 12.5A requirement?

[@geinstein337]

@@oghenerumechris281 If you have an MPPT charge controller, you can connect them in series or in parallel. If you have a PWM charge controller, it would be best if you connect the solar panels in parallel.

[@geinstein337]

@@oghenerumechris281 yes but that assumes you have an MPPT charge controller. If you have an ordinary PWM charge controller, you would need to connect the solar panels in parallel to get your 12.5A requirement. Hope this answers your question.

[@pierluigicolotto9570]

I took great plans from Avasva . It help me a lot with my own solars.

[@nkengafacconrad6507]

I have a question please

[@AkoRoi]

sir meron po ba kayong lecture session para sa solar computation and installation system? para naman po makakuha ng certificate para maging legit akong installer.

[@mytube3687]

I have a challenge, I need to design a solar system to run a total load of about 900w in the rv( motor home) for at least 18 to 20 hrs daily . I have a space of about 2.8mx2m =5.6square meter. To run min split ac and other small appliances. We have a sunshine of about 9 to 10 hours . I will appreciate if anybody can help .or any ideas.

[@savvasbambos2669]

No reply🙄😢

[@jleninedwin]

can i add 150ah + 26ah battery in series, will volt will still be 24 V in total and can number panel reduce?

[@harcasvictor8310]

Yes.

[@danielbon8467]

Sir ask ko Sana kung 12v battery gamit ko.ilang volts sa solar panel ang gagamitin ko.gagamitin ko lang sa ilaw Sir.

[@geinstein337]

Kailangan lang mas mataas sa 12V. Meron mga 24V at 36V. Pero kung lampas 30V suggestion ko gumamit ka ng MPPT solar charge controller

[@luckysantos953]

Pero sir bakit po kaya na pu full charge yung 100 ah battery ko khit nakadikit lng sa pader khit isang 150 watts lang panel nmin?

[@rudyhilario1897]

sir gud am, kung gridtie po set up ung walang battery 600watts panel mgkano po ang package deal bulacan area po, salamat...

[@jawshua100]

that is a wrong calculatio even if you are arranging the battery in series but the battery still need to be charged ? tell me how are u going to charge a battery with smaller current? 600w/4 is the panel capacity to charge the battery within 4 hours. and 150 w divided by 12 is to calculate your solar charger max Amp . you got it totally wrong my friend . put this way., the bigger the solar panel , the FASTER the battery charging due to more energy are captured , serries or paralllel doesnt have anything to do with it but greatly help in building an efficeint system and cost saving.

[@muffdriver69]

All I learned from his video is that smaller current and higher voltage means wires won't get too hot. Otherwise yeah, still need bigger panels.

[@benedictcabondocan8404]

Sir Greg, tanong ko lang po ito. Ilang solar panel po ba ang needed ko if I have 50ah 24volts battery? Series po ba ang connection ng panel o parallel?

[@geinstein337]

You can use 2*100Watts in series. So yung voltage niya is around 36V in total. Yung output current ng solar panel string will be around 4A. Puede rin 300Watts+ na solar panel pero in such case gawin mo na lang 100Ah yung battery o para sulit.

[@richardlaguna8158]

Why did you reduce the panel into one? Can you charge a 24v battery bank at one panel with 18vmp? NO. you need to series two panels with mppt controller.

[@geinstein337]

You can use a bigger panel with 28V maximum power voltage. These are the 1m x 1.6-1.7m types or bigger.

[@ryangawad2966]

Sir... nakakatipid po ba sa kuryente kung solar energy? Ang mahal po ng mga kelangan bago makabuo ng solar energy. Ung solar controler po ilang taon po tinatagal bago masira?

[@geinstein337]

Makakatipid ka talaga sa solar. Ang tanong lang gaano katagal bago mo mabawi ang pinundar mo para sa solar. Yung solar controller basta hindi inaabuso sa load side dapat more than 5 years tumagal.

[@geinstein337]

Yung solar panels more than 25 years ang tinatagal, basta mataas na quality ang bibilhin mo. Yung ibang panel puede rin tumagal pero kung di kilalang brand baka 3-5 years din lang. Yung battery ang talagang pinakamahinang component ng solar power system. Pero sinisubukan namin baguhin yung pananaw na iyon sa pamamagitan ng lithium iron phosphate (LifePO4) na baterya.

[@ryangawad2966]

Sir ano po maaadvise nyo about solar panel mono at poly?

[@jeromemauro7986]

Hello just a question, on the 4hr sunlight, pwede papoba tumaas yan ?

[@geinstein337]

Yes. Especially during summer. Average yan for the year.

[@simplifythings800]

so you need 2 battery connected in series, w/c is battery is more expensive than solar panel.... it doesn't make sense at all.

[@senfulubrowne8098]

Meaning, if you connect 200 ah, 2 battery, you will use two plates if you are connecting in series

[@Alph84]

Sir is it okay to build a 48v 18amps battery?

[@geinstein337]

For a 1kWh energy requirement? Yes, that's fine. Although usually the cells are rated at 20Ah.

[@albertdelima5600]

Ma tanong ko po sir, yung 24V system ang battery ay dapat 24V system din si solar panel?

[@geinstein337]

Tama. Karamihan naman ng solar panel na lampas 100W, lalampas ng 24V ang output nila. Kapag 24V ang battery at gusto mo gumamit ng 100W na solar panel, dapat mag-series ka ng dalawang 100W.

[@jimpreeks0007]

Kaso dagdag ka ng battery.. mas mahal yata ang baterya

[@marlonbernales7706]

Sana tinagalog mo nalang para naintindihan ng marami...

[@simonpeter9617]

Batteries are still very expensive though

[@anjosamehere7493]

Sorry sir but your calculations is only applicable if you are using PWM SCC. FYI if you are using MPPT that calculations is big wrong /oversize panel sizing.

[@kasidro915]

Daming nag rereklamo kesyo dapat nag tagalog nalang si sir langya sya pa talaga dapat mag adjust para sa inyo kung d kayo makaintindi ng english edi d na problema ni sir yun

[@princebuloyblanco7457]

Good day sir can we use 12v solar to 24 v battery???

[@jhonjayposadas4340]

Pati ang comment diri puro english abe nako public ni??? private man siguro ning akong nasudlan??

[@lingeshwar.j4200]

Panel watt/voc this correct So 150/20 volt =7amp U r callculation is wrong

[@geinstein337]

check the specifications of your solar panel. Can it really supply 7A.

[@1998muza]

Sir sorry to say but I can't understand your language Can you make a perfect subtitle so I can understand

[@muffdriver69]

lulz

[@newfile6675]

Dugo ilong, sir baka nmn patagalog, at tsaka mag bigay din ko kayo ng size ng battery para mas maunawaan namin. Kc kung amps at wala din alam ang nagbtitinda, nganga

[@geinstein337]

Pasensiya na. Ano ba gusto niyo malaman?

[@newfile6675]

@@geinstein337 sa 100w na solar panel anu po size ng battery ang pwd? Kaya po ba ako 6sm?

[@newfile6675]

@@geinstein337 salamat po

[@newfile6675]

@@geinstein337 tsaka pala boss, kapag naka series ba ako 2pcs 100w solar panels ay magiging 200w

[@arielpamintuan341]

para ba sa mga kano yan produkto nia paano mainitindihan ng ibang pinoy yan.

[@nicenice.316]

Sir..we need your help, because my house use air-conditioning we need 20A power supply for solar panels how many need pls explain thank you so much.

[@geinstein337]

20A AC current or DC current? How did you come up with 20A? Where are you based? Like our page: facebook.com/amaterasolar for more updates.

[@geinstein337]

We can direct message you in our fb page for faster communication

[@nicenice.316]

Sir I going to massenger pls reply thank you your help

[@nicenice.316]

FB I don't know sir..

[@shem6536]

You can set up grid tie system if your location experience no brownout. It cost less than the off grid set up. No batteries needed. You can apply net metering on your Distribution Utility so that your excess power produce by solar during day can be store at you DU and you can use it during night. In this set up you can able to reduce your bill up to negative.

[@doba7884]

2 100ah battery in series for 24 volts. Ok lng po ba 300w panel? Salamt sir

[@mhelbenpillonar6126]

Sir magaling kayo mgenglish pero minamarket nyo ang produkto nyo sa Pinoy, mas tatangkilikin kayo ng masa

[@geinstein337]

Pasensiya na. Mas universal kasi ang English. Free naman kayo mag-translate :)

[@lasnavas8019]

sir ung mga kano nmn tinuturuan mo..dapat pinoy

[@pachubogtv6330]

Tagalog sana.. Di naman yata amerikano studyante mo tay

[@irwinhisola5390]

Paano maintindihan ng viewers mo ang layo ng board ipakita mo ng mabuti.

[@salahuddinbangash4785]

Solar panel will give you its 40 to 60 %. 250W will give you 100 to 150watts in real situations. 😂

[@geinstein337]

Yes that's why I gave a rule of thumb knowing that solar panels will not give you 100% of its rated power in real life situations.

[@---pinoy---]

sna sir my tagalog para mas lalu maintindihan😘

[@darwinfajardo2799]

Minsan arabik nmn puro nlng english.

[@cletotaduran6718]

Tagalogin na lang DIY ..hindi malit0

[@cloud4263]

This is youtube. You can watch something else. Stupid.

[@jhonjayposadas4340]

Yawa!!!! Sakita sa akong dunggan ug ulo uy!!! Wa man mag ingon nga english subject man di ay ni.... Kung nasayran ko lang ug sayo pa nagcutting classes nalang unta ko gadugo naning ilong nakog sabot, pero wa dyud ko kasabot...

[@cloud4263]

Stupid