ur deep cycle ba3 must be protected.
it's d most costly part of ur offgrid setup.
so when u hear a 12v, 100ah. ba3 will supply 1200va, ask dem-
will u drain ur entire ba3 charge to zero?
dts impossible.
frequent discharge below 12v will shorten ba3 life.
learnt from hard lesson
so u only have (13.5-12v)*100a=150w as working power output to ensure long ba3 life.
any ba3 below 10.5v is considered dead.
therefore-
A CHARGE CONTROLLER/DISCHARGE MONITOR IS A MUST!
so beware of spurious claims.
good luck

follow my chats with an "expert" in d thread below-
https://www.nairaland.com/5378198/how-convert-ups-into-inverter
let's how far he can go, b4 I win him!

DZTech:
ur deep cycle ba3 must be protected.
it's d most costly part of ur offgrid setup.
so when u hear a 12v, 100ah. ba3 will supply 1200va, ask dem-
will u drain ur entire ba3 charge to zero?
dts impossible.
frequent discharge below 12v will shorten ba3 life.
learnt from hard lesson
so u only have (13.5-12v)*100a=150w as working power output to ensure long ba3 life.
any ba3 below 10.5v is considered dead.
therefore-
A CHARGE CONTROLLER/DISCHARGE MONITOR IS A MUST!
so beware of spurious claims.
good luck

]follow my chats with an "expert" in d thread below-

https://www.nairaland.com/5378198/how-convert-ups-into-inverter
let's how far he can go, b4 I win him

You are just seeking for audience and u cant spoil my good write up. i hv handled jobs daily and based on my calculation for yrs with commendation. I will advice u go to google and make a good research is at free cost and stop spoil what others innonate by themself.

DZTech:
ur deep cycle ba3 must be protected.
it's d most costly part of ur offgrid setup.
so when u hear a 12v, 100ah. ba3 will supply 1200va, ask dem-
will u drain ur entire ba3 charge to zero?
dts impossible.
frequent discharge below 12v will shorten ba3 life.
learnt from hard lesson
so u only have (13.5-12v)*100a=150w as working power output to ensure long ba3 life.
any ba3 below 10.5v is considered dead.
therefore-
A CHARGE CONTROLLER/DISCHARGE MONITOR IS A MUST!
so beware of spurious claims.
good luck

I understand your point of not discharging the battery below a set voltage/percentage of discharge but the calculation you're using to advance your argument is flawed, when a battery gets discharged, it isn't just the voltage that reduces the amount of current stored also diminishes a battery rated 12V -100AH... 1200W can supply 600W which is 50% DOD(neglecting losses for the sake of argument) and it's voltage would remain a little above 12V depending on the state of the battery's cells.

dragnet:

I understand your point of not discharging the battery below a set voltage/percentage of discharge but the calculation you're using to advance your argument is flawed, when a battery gets discharged, it isn't just the voltage that reduces the amount of current stored also diminishes a battery rated 12V -100AH... 1200W can supply 600W which is 50% DOD(neglecting losses for the sake of argument) and it's voltage would remain a little above 12V depending on the state of the battery's cells.

u are seeking for audience mr. your argument has no base...

dragnet:

I understand your point of not discharging the battery below a set voltage/percentage of discharge but the calculation you're using to advance your argument is flawed, when a battery gets discharged, it isn't just the voltage that reduces the amount of current stored also diminishes a battery rated 12V -100AH... 1200W can supply 600W which is 50% DOD(neglecting losses for the sake of argument) and it's voltage would remain a little above 12V depending on the state of the battery's cells.

wots d max REALISTIC load d ba3 can carry?
how long will it last at such a load?

DZTech:
wots d max REALISTIC load d ba3 can carry?
how long will it last at such a load?

best is at C20 discharge rate which for a 100Ah battery is 60W at a go, higher than that is possible but it would impact on the battery, you can do the rest of the maths to know how long.

MrTony32:

u are seeking for audience mr. your argument has no base...

?

I need a solar power system to power CCTV surveillance

dragnet:

best is at C20 discharge rate which for a 100Ah battery is 60W at a go, higher than that is possible but it would impact on the battery, you can do the rest of the maths to know how long.

MrTony32:



I hv chose not to reply u again but i see that u are going too far. I believe i hv done no wront yo u. If i may ask are u doing this because i did not accept ur view that is absurd on my write.

Y not mind ur own business let the sleeping dog lie.

I dont know who u are neither do u know who i m. I must tell u dont do what u will regret in ur entire life...this will be my first and last warning.

Mr, check who you're replying, I never quoted or responded to you, my response was directed to the other person.

MrTony32... Make you try respect @dragnet na, if not for any other reason, he had been on nairaland since 2007! Haba so many sons of man never have access to the internet that time o, please let's not insult people just because we have access to the internet

solarview:
MrTony32... Make you try respect @dragnet na, if not for any other reason, he had been on nairaland since 2007! Haba so many sons of man never have access to the internet that time o, please let's not insult people just because we have access to the internet . @ dragnet sir, remember your popular quote... "don't try to teach pig how to sing" if you know, you know

pig?!
Haba!