How to make your own home solar. With Pictures + solar book

[awinahe]

Kawawa naman ang 100ah ko kandidato na maging sulfated battery. Palaging kapos ang charging..

It is not a brand new bat? How many volts do you get? Maybe it's not going to be sulfated... it can be also due to too small wires or loosen wires... or maybe you use it while charging... or kulang sa araw

 

[blackthief]

mga sir tanong lang po, kapag fullcharge na 12ah battery ko at kinabit ko sa inverter at destop comp.,pero nakakabit pa ang 100w solar panel ng dirikta(walang controller), 4 blocking diode lang nilagay ko,nagchacharge habang umaandar inverter,okey lang po ba to?gamit ko nga ngayon mag 3 hours na pero di pa nag lobatt, thanks po,

 

[awinahe]

mga sir tanong lang po, kapag fullcharge na 12ah battery ko at kinabit ko sa inverter at destop comp.,pero nakakabit pa ang 100w solar panel ng dirikta(walang controller), 4 blocking diode lang nilagay ko,nagchacharge habang umaandar inverter,okey lang po ba to?gamit ko nga ngayon mag 3 hours na pero di pa nag lobatt, thanks po,

your small bat will not be discharged as long as it is sunny! It will be fast low bat if no more sun... but what is more important is that your bat does not overcharge! Do you monitor its voltage? how many watts your desktop + inverter?

 

[TristanWS]

mga sir tanong lang po, kapag fullcharge na 12ah battery ko at kinabit ko sa inverter at destop comp.,pero nakakabit pa ang 100w solar panel ng dirikta(walang controller), 4 blocking diode lang nilagay ko,nagchacharge habang umaandar inverter,okey lang po ba to?gamit ko nga ngayon mag 3 hours na pero di pa nag lobatt, thanks po,

In theory:
masisira agad ang 12AH battery... bakit?... ang proper charge/discharge rate ng 12AH battery ay 1.2A lang (12AH/10)... pero pinapasukan mo sya ng 5.5A - 8.3A (100w / 12v or 18v)... tapos dini-discharge mo pa sya sa load na ??? watts / 12v = more than 10A?

In real life:
... gumagana di ba?... kumusta naman ang 12AH battery, umiinit ba?.... kung mainit ay delikado, pero kung hindi naman ay pumupunta ang kuryente sa load ng inverter... nakita ko na si gadget addict (youtube) na nag-experiment ng panel >direct to inverter, tapos payo nya na gamitan ng maliit na battery para hindi daw intermittent ang voltage, katulad ng ginagawa mo.

 

[poseidon]

N

It is not a brand new bat? How many volts do you get? Maybe it's not going to be sulfated... it can be also due to too small wires or loosen wires... or maybe you use it while charging... or kulang sa araw

Brand new solar master po.. usually po charging without load. Tama po sa araw kulang lang sa solar panel hihi.. pagdating ng hapon palaging 12.90 lang. Minsan umaabot ng 13.20v bago ko i-stop ang charging.. Just enough for my 20watts over night load. Sa umaga may 12.30v pang natitira

Edit: 100w lang po ang aking solar panel

 

[TristanWS]

Brand new solar master po.. usually po charging without load. Tama po sa araw kulang lang sa solar panel hihi.. pagdating ng hapon palaging 12.90 lang. Minsan umaabot ng 13.20v bago ko i-stop ang charging.. Just enough for my 20watts over night load. Sa umaga may 12.30v pang natitira Edit: 100w lang po ang aking solar panel - poseidon

... di ba suoer cc ka? bakit mo stop pagdating sa 13.2?... auto-off naman yan pagdating ng 15v... tapos 20w load for 12 hours = 20% DoD lang... in theory 4 hours lang ay recharged na ulit ang battery using 100w panel assuming na 20% talaga ang DoD... IMO.

 

[awinahe]

N

Brand new solar master po.. usually po charging without load. Tama po sa araw kulang lang sa solar panel hihi.. pagdating ng hapon palaging 12.90 lang. Minsan umaabot ng 13.20v bago ko i-stop ang charging.. Just enough for my 20watts over night load. Sa umaga may 12.30v pang natitira

Edit: 100w lang po ang aking solar panel

If you are using a charge controller pwm, it's normal... if you are using a controller mppt, it should be charged after one sunny day... if you don't use a controller it is not normal!!!

So if you are using a controller, try to charge your bat without the controller but you need to monitor it closely... if it goes up to 14+ volts in few hours, it means your bat is ok... but kulang sa panel because of the controller!

If you don't use a controller check your wiring... maybe something is loose

Why do you stop the charging at 13.20??

 

[blackthief]

@awinahe
di naman po na o overcharged batt.kapag 15volts na diskonik ko na solar panel,di na nafullcharge ang batt. kapag umaandar ang inverter + lcd tv kahit matindi ang araw,kung minsan desktop comp.nakakabit

cdr king inverter 500watts
desktop comp. intel celeron processor,320 gig hardisk 2gig memory plus dvd rom,di ko alam wattage nito
lcd tv 120watts


@TristanWS

di naman po umiinit ang battery,
12ah motolite batt. ordinary maintenance type

 

[poseidon]

... di ba suoer cc ka? bakit mo stop pagdating sa 13.2?... auto-off naman yan pagdating ng 15v... tapos 20w load for 12 hours = 20% DoD lang... in theory 4 hours lang ay recharged na ulit ang battery using 100w panel assuming na 20% talaga ang DoD... IMO.

Sir tristan/ Maam TS
Suoer charge controller po ang gamit ko. 13.20v lang hanggang 5:30 pm na charging. Nakasanayan ko na ini-stop ang charging kapag ganung oras na. May doubt din kasi ako sa capabilty ng scc ko baka mag reverse flow siya kapg madilim na. Pero naranasan ko isang beses. inabot ng 9:00 pm hindi ko na stop ang charging. Kabado na baka sunog na ang mga panel ko. Okay pa naman siya kinabukasan.

Sir tristan, Hindi ka ba naglagay ng cut off switch ng solar panel to scc?
Ako kasi pinapatay ko sa gabi ang solar panel. Hindi rin ako nag cha-charge kapag mag hapon na walang tao sa amin. Natatakot ako na baka hindi maka uwi ng maaga at nagcha charge ang battery.

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... di ba suoer cc ka? bakit mo stop pagdating sa 13.2?... auto-off naman yan pagdating ng 15v... tapos 20w load for 12 hours = 20% DoD lang... in theory 4 hours lang ay recharged na ulit ang battery using 100w panel assuming na 20% talaga ang DoD... IMO.

Suoer po ang gamit ko na controller. 13.20 v lang hanggang 5:30 na charging. Nasanay kasi ako na pinapatay ang solar panel sa gabi. May doubt din kasibako capability ng scc na ito. Hihi.. pero naranasan ko isang beses umabot ng 9pm di ko napatay ang panel. Okey lang siya kunbukasan.ikae ba dati sir tristan derecho walang patayan ang solar panel kahit sa gabi?

 

[TristanWS]

Suoer po ang gamit ko na controller. 13.20 v lang hanggang 5:30 na charging. Nasanay kasi ako na pinapatay ang solar panel sa gabi. May doubt din kasibako capability ng scc na ito. Hihi.. pero naranasan ko isang beses umabot ng 9pm di ko napatay ang panel. Okey lang siya kunbukasan.ikae ba dati sir tristan derecho walang patayan ang solar panel kahit sa gabi?- poseidon

meron din ako suoer scc >14.4Ah battery >20w panel... palaging naka-connect sa panel... manual switch (#16) on-off para sa load na 12v dc led bulbs ang gamit ko... kapag gabi na stop blinking na ang mga bars, kapag umaga na blinking na naman... at meron pa syang low voltage disconnect feature (auto-off ang load pag low-batt)... bakit hidi mo subukan para makita mo mismo.

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@awinahe
di naman po na o overcharged batt.kapag 15volts na diskonik ko na solar panel,di na nafullcharge ang batt. kapag umaandar ang inverter + lcd tv kahit matindi ang araw,kung minsan desktop comp.nakakabit

cdr king inverter 500watts
desktop comp. intel celeron processor,320 gig hardisk 2gig memory plus dvd rom,di ko alam wattage nito
lcd tv 120watts
@TristanWS
di naman po umiinit ang battery,
12ah motolite batt. ordinary maintenance type

... nakuha mo ang perfect balance kung malakas ang araw... pero kung cloudy o umuulan?... syempre sa battery kukuha ng current... IMO, malo-low batt agad ang battery... in theory ang 12AH battery ay pwedeng tumagal ng 30 minutes? sa load mo.

 

[awinahe]

@awinahe
di naman po na o overcharged batt.kapag 15volts na diskonik ko na solar panel,di na nafullcharge ang batt. kapag umaandar ang inverter + lcd tv kahit matindi ang araw,kung minsan desktop comp.nakakabit

cdr king inverter 500watts
desktop comp. intel celeron processor,320 gig hardisk 2gig memory plus dvd rom,di ko alam wattage nito
lcd tv 120watts

@TristanWS

di naman po umiinit ang battery,
12ah motolite batt. ordinary maintenance type

Nice! Actually your small bat is used like a "buffer" between the panel and your appliances... it's like your panel is directly powering the appliance passing briefly thru the bat... and it works well. But as said Tristan, if it's cloudy your bat will not last long, and if your bat is totally drained it will be very fast damaged. I hope your inverter will beep in case you have low bat!

Sir tristan/ Maam TS
Suoer charge controller po ang gamit ko. 13.20v lang hanggang 5:30 pm na charging. Nakasanayan ko na ini-stop ang charging kapag ganung oras na. May doubt din kasi ako sa capabilty ng scc ko baka mag reverse flow siya kapg madilim na. Pero naranasan ko isang beses. inabot ng 9:00 pm hindi ko na stop ang charging. Kabado na baka sunog na ang mga panel ko. Okay pa naman siya kinabukasan.

Sir tristan, Hindi ka ba naglagay ng cut off switch ng solar panel to scc?
Ako kasi pinapatay ko sa gabi ang solar panel. Hindi rin ako nag cha-charge kapag mag hapon na walang tao sa amin. Natatakot ako na baka hindi maka uwi ng maaga at nagcha charge ang battery.

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Suoer po ang gamit ko na controller. 13.20 v lang hanggang 5:30 na charging. Nasanay kasi ako na pinapatay ang solar panel sa gabi. May doubt din kasibako capability ng scc na ito. Hihi.. pero naranasan ko isang beses umabot ng 9pm di ko napatay ang panel. Okey lang siya kunbukasan.ikae ba dati sir tristan derecho walang patayan ang solar panel kahit sa gabi?

So, if your bat always just reaches 13.20 volts it's never totally charged... I suggest you to plug directly your bat to your panel once every 4 or 6 months (depends if you use it daily or not) and charge it up to 15 volts (you need to monitor it, don't go away and leave it charging), doing so you will avoid it to be sulfated.
Theoretically you should not need to turn off your controller at night... unless you really don't trust it lol

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A road constructed with solar panels!
http://blogs.discovermagazine.com/d...rst-solar-bike-path-netherlands/#.VFq0yxac505

 

[blackthief]

@awinahe
@TristanWS
kapag hindi nakakabit ang panel 30 minutes lang tinatagal ng 12ah battery ko
nag b beep na po ang inverter,

sir,kahit ba malaki ang battery halimbawa 100AH at gagamitin habang nag cha charge may posibilidad ba itong madaling masira battery?

 

[TristanWS]

sir,kahit ba malaki ang battery halimbawa 100AH at gagamitin habang nag cha charge may posibilidad ba itong madaling masira battery?

.. afaik, doon sa setup mo na maliit na battery (12AH)... madali sya masira dahil hindi tama ang charge/discharge rate... ang proper para sa 12AH ay 1.2A lang (C/10)... kung ang gagamitin ay 100AH battery, ang proper charge/discharge rate ay 10A (C/10)... therefore kayang kaya ang 100w panel kasi ang current niya ay 5.5A - 8.3A lang... at ang load mo naman na 120w ay tamang tama lang kasi ang current draw niya ay 10A (120w / 12).

Source: Battery size tutorial, by Sunking, MSEE, PE
http://www.solarpaneltalk.com/showt...tery-Size-Tutorial-Part-2&p=124508#post124508

 

[awinahe]

@awinahe
@TristanWS
kapag hindi nakakabit ang panel 30 minutes lang tinatagal ng 12ah battery ko
nag b beep na po ang inverter,

sir,kahit ba malaki ang battery halimbawa 100AH at gagamitin habang nag cha charge may posibilidad ba itong madaling masira battery?

Your small battery charge a lot too fast with 100 watt panel, for sure it will be damaged fast... to try to have it last longer, use it when you charge it... don't charge it without load... this will help to keep it a little be more before it totally dies!
Even a 100 Ah bat with a 100 watt panel will charge too fast if you don't use any appliance while charging. Dapat, if you don't use a controller, with a 100 Ah bat you need only a 50 watt panel or for a 100 watt panel you should have a 200 Ah battery.
You can still use a 100 watt panel with a 100 Ah battery but be sure to plug always something while charging, like a fan or your desktop... if you plug something too small like lights it's not enough... and always monitor the charge of the battery with the multitester... the voltage with load should never go over 14.30... If the voltage reaches 14.30, just stop the panel for few minutes, until the voltage goes down to 12.70 or 12.80 then switch on the panel (you will not have to do that if the voltage is 14.30 at around 4 to 5 pm because the sun will not be strong enough anymore to overcharge) Also, you need a switch between your panel and the battery.

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Source: Battery size tutorial, by Sunking, MSEE, PE
http://www.solarpaneltalk.com/showt...tery-Size-Tutorial-Part-2&p=124508#post124508

After reading this "tutorial", I found out that, since 3 years na, I was just dreaming that I had solar at home because according to them my setup cannot work

 

[TristanWS]

... After reading this "tutorial", I found out that, since 3 years na, I was just dreaming that I had solar at home because according to them my setup cannot work

as for me, i believe it is OK to consider the “tutorials” of the professionals and experiment on them to see if they really work… and feel happy within ourselves if we proved them wrong… but I think the teaching about the C/10 (charge/discharge rate) is fine and worth considering.

 

[blackthief]

@awinahe
thanks very big mam

 

[awinahe]

as for me, i believe it is OK to consider the “tutorials” of the professionals and experiment on them to see if they really work… and feel happy within ourselves if we proved them wrong… but I think the teaching about the C/10 (charge/discharge rate) is fine and worth considering.

Don't get me wrong, I do agree that knowing the theory (in this case the C/10) is "fine and worth considering". Actually, to me, it's even mandatory to know the theory (whatever the field) before going to "fly" on my own... but I will never get stuck in a theory because it's the best way for not progressing. It's like a child to whom you teach the basics of life, when he grows old he makes his own way by adapting whatever you taught him.

Coming back to solar I think that, although it's good to know the theory of the C/10, a practical answer is a better way to help someone. If someone asking for help. here, wants to know about the theory it's very easy to find online... Theory (like Ohm's laws) does not change contrary to the real life where you always have to adapt your setup to your budget, house, desire or whatever... Considering only the theory just make these "professionals" give an answer which totally contradicts the real life (my setup is the proof)

However, there is something I disagree with you is about calling "professionals" people in these forums! It's very easy to anybody with a little knowledge to say or look like a professional, but in reality they might be as professional as I am (which I am not, as I always said I just want to share my experience and if my experience can help others, I'm happy!)

@awinahe
thanks very big mam

You are very welcome! And don't hesitate to ask if you have others questions: you will have the theoretical answer from Tristan and the practical answer from me... completo na

 

[TristanWS]

just want to share... i think this info is very important to all solar off-gridders...

Types of Inverters: Switch mode inverter, transformer inverter, rotary converter
Source: http://www.sterling-power.com/products-230vi-pure-info.htm

When running low power equipment for long periods such as televisions, videos, refrigerators or computers, it is vital to have an inverter with low 'quiescent' current (the actual current the inverter takes to run itself when in operation). This quiescent current can vary dramatically from 0.7 amps for switch mode inverters, 2 – 5 amps quiescent current for transformer inverters and 25 amps for rotary converters. Inverters that have a high quiescent current are usually fitted with a 'power saver' circuit to switch the inverter off when not required, switching on only when a load is detected. Beware of inverters with this type of circuit as this circuit is designed to mask the high quiescent current of the inverter when on line. It is very important to distinguish between the off load current of an inverter (with a power save circuit) and the actual quiescent current of the inverter when in actual use. This information is not readily available from most companies. A typical portable phone battery on recharge would require about 1 amp an hour for 12 hours, a total of 12 amp/hours. To provide this output a good switch mode inverter would actually use about 15 amp/hours, a transformer based inverter about 40 amp/hours and a rotary converter about 250 amp/hours, all to do the same task.

 

[blackthief]

experiment uli,
dito sa amin ay casureco coop. nag supply kuryente,LINE TO GROUND ang linya=220 volts,
in off ko safety box, kasama na pati ground galing sa kanila,tapos supply galing inverter out ang kinonek ko sa wiring ng bahay ko,umandar yung mga ilaw,pati mga outlet,pero may kaunting ground nang hawakan ko sa linya ng battery,mas malakas ang ground kung hindi ko tinangal yung
isang linya(ground) galing sa kuryente ng coop.pwedi kaya igrounding ang negative ng batt.di ko pa sinubukan maka makaapekto sa inverter,

 

[TristanWS]

sir blackthief

... ang alam ko na naka-manual transfer switch (to connect the battery inverter to mains, similar sa ginagamit sa generator) ay si sir glennjv... sana andito pa siya... yung sa akin ay hiwalay ang linya for safety reason.