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hi youtubers jeff cote here

we've got a question from joe and joe's

from eagle harbor in on bain bridge

island

and he's asking jeff i've got a thunders

thunder

struck 48 volt motor how do i charge the

48 volt battery bank with my 12 volt

solar panels oh great question

all right so here we go so let's have a

look at this diagram

so we know that when we purchase a

controller

we've got to actually think about a few

things what are those things one is the

wattage

of the solar panel right the other one

is actually really important is going to

be what is going to be the

input voltage so panels remember

are never outputting what your battery

needs there's no such thing as a panel

that you can just connect to your

batteries

right and that is where the solar

controller comes in

so this solar controller here

will have an input voltage from the

panel and the panel some of my panels

are 8 volts

you can wire a bunch of panels in series

and have a

panel array that is 40 volts 60 volts 80

volts

either way it's not the right voltage 8

volts not good

80 volts not good and so how do you get

an

8 volt panel or an 80 volt array to give

you the right voltage

the way you do that is actually with the

controller right here and the trick

is you need to choose the controller not

only for the solar wattage the solar

amperage

but also the battery voltage and the

good news is

there are solar controllers that output

48 volts

and those solar controllers are

generally called the boost controllers

meaning the input voltage coming into

the panel

it might be or into the controller might

be only 20 volts

might be 12 might be eight and they're

going to take that voltage

and they're going to actually bring it

up boost the voltage

and bring it to 48 volts so it is

absolutely possible to buy a controller

that outputs 48 volts even though the

input voltage is

20 or 8 or 10 or 12 and so you do that

by buying the right controller for your

application and victron makes controls

like that as well

thank you for watching this pys video if

you've got further questions

ask them down below or go on our website

to fill one of the forms

and don't forget to subscribe

and thanks for watching

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