| Lithium Iron Phosphate Battery technology - off gride
Q4: Welcome to Off Grid living.
Today is Feb 26 at 7:30 am, 15 days of running the Air Conditioner.
The Air Con switches off at least once per day?
After contacting the manufacturer, we agreed
that the fan blowing the hot air out is falling and being sucked
back into the machine itself, forcing it to work hard and switch itself off.
So I intalled a 350mm by 350mm metal ducted square tube.
I also took the main covers off to inspect, for wasp mud deposits:
The fins look clean. Good.
Not sure what sensor A does, but all looks OK.
Not sure what sensor B does, but all looks good.
Some rust with water, cleaned it off.
Also water here, wiped it off.
Not sure of this thing? but it looks OK.
What the sensor reads after "firing it up".
The air temp outside is 25 degrees.
The hot air over the fan is usually 29 degrees,
about 2 to 3 degrees warmer.
The picture of the air ducted pipe, newly installed.
How the new ducted pipe looks outside.
You can feel the hot air pushed out.
I also placed a flyscreen to keep wasps out.
And a hood to keep rainy drizzle out.
How the room for the unit looks.
Amps coming into batteries early in the morning is 14A
And amps leaving the battery, for Air Con. is 23 A.
The battery is 26.4V about 40 to 50% fully charged.
The Smart Solar Controllers all on bulk.
This is normal.
Now let's see how the air con goes today,
with it's newly installed air pipe duct.
It's 9:30 am
Temperature on Air Con is 27 degrees
Amps coming in is 35 Amps
Amps going out is 17A
BATTERY VOLTAGE ia 26.6 about 60% fully charged.
The Victron 3000 VAC Inverter is very capable of running the Air con,
with it's need for 500W to 1200W as required. This device is the only
240V applicance the Inverter runs.
On bulk amps coming in can range over 100Amps, and reach float by 3pm.
So the system is well designed to handle needs, with 24 10 Amp solar panels,
the theoretical amps available is 240Amps ! but I don't get that because
the Panels are peaked half facing East and half facing West, so I max out
on 120 Amps. This a theoretical maxinum.
Things are looking OK - now let's see if the problems are resolved.
Its Friday 27 Feb 2026, 7:20 am and
17 Amps in 15 Amps out
Amazing to have so much coming in so early in the morning.
Voltage is 26.4 V about 50% fully charged, so the Air con runs 500W all night !
Cheers for now :)
Li-Fe PO4 battery technology
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