How many panels do i need?

[aleeu]

Hello everyone,

At the moment i have six 130w panels (17v) connected to four 200ah (12v) batteries via 45amps charge controller.
My question is,(1) how many panels do i need to fully charge my batteries daily if i have 6hrs of sunlight daily from 50% of their charge.
(2) how many of 130w panels can my controller accommodate.
(3) how many amps do my panels produce.

My inverter is 24v system.


Thanks.
aleeu

[Sunking]

OK first since you have battery panels and 24 volt battery you had better have your panels wired 2 x 3 meaning two panels in series, wired in parallel with 3 sets of 2. Otherwise you are totally screwed.

OK 780 watts of battery panels wired for 24 volt battery will generate roughly 21 to 22 amps of current. So you can double the wattage you currently have if you are foolish enough to stay with PWM.

Your current configuration can only support up to 250 AH of batteries so you do not have enough panel wattage to support your batteries you have now and need to double the panel wattage.

OK 24 volt 400 AH battery 50% capacity is 4.8 Kwh. Problem is no way do you likely get 6 Sun Hours, but let's make believe and say you do get 6 Sun Hours. If you use PWM controller will take:

Panel Wattage = 1600 watts
PWM Controller = 40 amps

If using MPPT:

Panel watts = 1200 watts
MPPT Controller = 40 amps

[PV-Solarpanel]

totally agree with upstairs.
if you choose the pwm controllers,your panels should be doubled.mppt controller's efficiency is around 30% higher than pwm
and 6 hours is impossible,only some africa countries can reach 5-6 hours

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