Loadshedding affordable battery setup?

Francisco2580

Francisco2580

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Good afternoon.
With the current state of affairs relating to loadshedding, I have lost all patience with just powering through loadshedding. I want to acquire an affordable battery and inverter combo. I have checked takealot for ease of use and found the following:
Inverter: JRY Power Inverter 500w - R690.00
Battery: BT 120AH 12v Deep Cycle Acid Battery @2 - R5'998

The inverter is listed as providing >90% effiency (i still bargain at 80% to be safe), as well as being able to charge the battery. The inverter provides a car port charging cable. My thought is to just convert it to a house plug socket.

My power usage that I want to make provisions for is for 150w/200w usage. A sloadshedding is at stage 6 intervals of 4 hours, i want to be able to either watch tv (150w) for the 4 hours, or use my fans (2 @65w) for the 4hours. I calculate this usage as 150w x 4 = 600w / 12 v = 50ah. The batteries provide 2 x 120ah = 240 ah / 50% (not using more than 50%) = 120ah / 80% efficiency = 96ah.

My questions are as follows:
1. Will this be sufficient to use for my setup, or are there other component needed or factors to consider?
2. Will it be possible to convert the cable to a house socket adapter, or are there complication with that?
3. Is my calculation accurate regarding the power requirements?
4. Will the inverter be able to fully recharge the batteries in between the 4 hour invervals of no loadshedding, or do I need an additional battery chargers? If so what charger would be recommended?
 

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Even dropping those batteries to 50% capacity will only give you 100 to 300 cycles
Then throw batteries away and start again

Rather go lithium
You can go down to 0% and have +/-2000 life cycles
 
Francisco2580 said:
Good afternoon.
With the current state of affairs relating to loadshedding, I have lost all patience with just powering through loadshedding. I want to acquire an affordable battery and inverter combo. I have checked takealot for ease of use and found the following:
Inverter: JRY Power Inverter 500w - R690.00
Battery: BT 120AH 12v Deep Cycle Acid Battery @2 - R5'998

The inverter is listed as providing >90% effiency (i still bargain at 80% to be safe), as well as being able to charge the battery. The inverter provides a car port charging cable. My thought is to just convert it to a house plug socket.

My power usage that I want to make provisions for is for 150w/200w usage. A sloadshedding is at stage 6 intervals of 4 hours, i want to be able to either watch tv (150w) for the 4 hours, or use my fans (2 @65w) for the 4hours. I calculate this usage as 150w x 4 = 600w / 12 v = 50ah. The batteries provide 2 x 120ah = 240 ah / 50% (not using more than 50%) = 120ah / 80% efficiency = 96ah.

My questions are as follows:
1. Will this be sufficient to use for my setup, or are there other component needed or factors to consider?
2. Will it be possible to convert the cable to a house socket adapter, or are there complication with that?
3. Is my calculation accurate regarding the power requirements?
4. Will the inverter be able to fully recharge the batteries in between the 4 hour invervals of no loadshedding, or do I need an additional battery chargers? If so what charger would be recommended?
Click to expand...
You are probably better off doing the below instead, and is also far safer than plonking a 3 point plug on this inverter which accepts 12v input and not 240v....
AlphaJohn said:

Geewiz Inverter Trolleys

Buy Geewiz Inverter Trolleys online at the Best Prices! Door to Door and Overnight Delivery. Voted the best online store in SA. View Here
www.geewiz.co.za www.geewiz.co.za

Is way better for similar price
Click to expand...
 
Francisco2580 said:
Good afternoon.
With the current state of affairs relating to loadshedding, I have lost all patience with just powering through loadshedding. I want to acquire an affordable battery and inverter combo. I have checked takealot for ease of use and found the following:
Inverter: JRY Power Inverter 500w - R690.00
Battery: BT 120AH 12v Deep Cycle Acid Battery @2 - R5'998

The inverter is listed as providing >90% effiency (i still bargain at 80% to be safe), as well as being able to charge the battery. The inverter provides a car port charging cable. My thought is to just convert it to a house plug socket.

My power usage that I want to make provisions for is for 150w/200w usage. A sloadshedding is at stage 6 intervals of 4 hours, i want to be able to either watch tv (150w) for the 4 hours, or use my fans (2 @65w) for the 4hours. I calculate this usage as 150w x 4 = 600w / 12 v = 50ah. The batteries provide 2 x 120ah = 240 ah / 50% (not using more than 50%) = 120ah / 80% efficiency = 96ah.

My questions are as follows:
1. Will this be sufficient to use for my setup, or are there other component needed or factors to consider?
2. Will it be possible to convert the cable to a house socket adapter, or are there complication with that?
3. Is my calculation accurate regarding the power requirements?
4. Will the inverter be able to fully recharge the batteries in between the 4 hour invervals of no loadshedding, or do I need an additional battery chargers? If so what charger would be recommended?
Click to expand...
I Think you are mistaken about the inverter, that car plug is so that you can plug your inverter into a car socket, so effectively the car becomes the battery supplying 12v that the inverter turns into 220 AC. Also the inverter does not have a charger, you would need to buy one separately.

I had the same inverter and it came with two sets of cables, the one set has the "car plug" so you can use it in your car, the other set has clamps so you can clamp it on a battery. It's easy t switch between the two.
 
Also square-wave inverters tend to make Fans go wibbly wabbly and get hot(overheated) so rather go USB-Fans if cheap (square-sine) inverters are the only way
 
PsyWulf said:
Also square-wave inverters tend to make Fans go wibbly wabbly and get hot(overheated) so rather go USB-Fans if cheap (square-sine) inverters are the only way
Click to expand...
they also make gu10 downlights go flishy flashy ,for a while .then no more gu10
 
die_koos said:
I Think you are mistaken about the inverter, that car plug is so that you can plug your inverter into a car socket, so effectively the car becomes the battery supplying 12v that the inverter turns into 220 AC. Also the inverter does not have a charger, you would need to buy on
WAslayer said:
You are probably better off doing the below instead, and is also far safer than plonking a 3 point plug on this inverter which accepts 12v input and not 240v....
Click to expand...

e separately.

I had the same inverter and it came with two sets of cables, the one set has the "car plug" so you can use it in your car, the other set has clamps so you can clamp it on a battery. It's easy t switch between the two.
Click to expand...
Thank you for the help, do you have a suggestion for a setup that would last 4.5 hours to accommodate stage 6 loadshedding @150w power draw?
 
Francisco2580 said:
Good afternoon.
With the current state of affairs relating to loadshedding, I have lost all patience with just powering through loadshedding. I want to acquire an affordable battery and inverter combo. I have checked takealot for ease of use and found the following:
Inverter: JRY Power Inverter 500w - R690.00
Battery: BT 120AH 12v Deep Cycle Acid Battery @2 - R5'998

The inverter is listed as providing >90% effiency (i still bargain at 80% to be safe), as well as being able to charge the battery. The inverter provides a car port charging cable. My thought is to just convert it to a house plug socket.

My power usage that I want to make provisions for is for 150w/200w usage. A sloadshedding is at stage 6 intervals of 4 hours, i want to be able to either watch tv (150w) for the 4 hours, or use my fans (2 @65w) for the 4hours. I calculate this usage as 150w x 4 = 600w / 12 v = 50ah. The batteries provide 2 x 120ah = 240 ah / 50% (not using more than 50%) = 120ah / 80% efficiency = 96ah.

My questions are as follows:
1. Will this be sufficient to use for my setup, or are there other component needed or factors to consider?
2. Will it be possible to convert the cable to a house socket adapter, or are there complication with that?
3. Is my calculation accurate regarding the power requirements?
4. Will the inverter be able to fully recharge the batteries in between the 4 hour invervals of no loadshedding, or do I need an additional battery chargers? If so what charger would be recommended?
Click to expand...
that 500 watt unit will give you around 200w continuous with a draw of around 3 to 5 amp off the battery .
 
Francisco2580 said:
Thank you for the help, do you have a suggestion for a setup that would last 4.5 hours to accommodate stage 6 loadshedding @150w power draw?
Click to expand...
a 500 watt pure sine wave inverter at 24v will work .you should get 250 w out of it , maybe
 
zolly said:
What's your budget?
Click to expand...
This, I remember when I asked what can I get for R3000. Answer: nothing worthwile.

If it was just me:
Micro Ups for Router
Laptop which have a 8 hour lifespan
Some rechargeable lights.

Methinks his budget is way to low and he is hoping someone will suggest something that matches his low budget.
 
Francisco2580 said:
Can you please explain this, I do not understand?
Click to expand...
on real life testing its rating is not what you get out continuous ,its usually a peak for a few milliseconds then it settles back to the max load which is usually around 50 % less than rated.and a 2000watt portable unit can suck 9 amps just idling away on 12v
 
Last edited:
Pineapple Smurf said:
R7000 by the looks of it
Click to expand...
Around R9000, but yes not a very high budget, I dont want to power a lot of utilities, so if i cant get anything worthwhile for my budget, then i'll rather just stick to laptop and peaceful sleep for the flying politicians in the evenings.
 
soulie said:
on real life testing its rating is not what you get out continuous ,its usually a peak for a few milliseconds then it settles back to the max load which is usually around 50 % less than rated.and a 2000watt portable unit can suck 9 amps just idling away on 12v
Click to expand...
They usually stipulate the peak an continuous current.
 
Francisco2580 said:
Around R9000, but yes not a very high budget, I dont want to power a lot of utilities, so if i cant get anything worthwhile for my budget, then i'll rather just stick to laptop and peaceful sleep for the flying politicians in the evenings.
Click to expand...
Okay cool budget then
Future proof it by ensuring the inverter is Pure Sine Wave (like what ESKOM is) and not the cheaper Modified Sine Wave
Reason is worst-case scenario you can hook up your fridge during the day with a small solar panel later. The AC compressors on fridges do not generally like a modified sine wave power source.

Fridges use anywhere from 100 - 200 watts depending on their size
My small standup 2-door uses 110 Watts
But a fridge needs tons of juice to start up each time the compressor kicks in
This can be up to 1000 Watts for 2 or 3 seconds
So make sure you get a 1000 Watt Pure Sine Wave inverter
Something like this is a good start
You can add additional batteries later, and this one already has the solar charge controller built in so add panels later if you want to. Up to 700 Watts
www.geewiz.co.za

GeeWiz Axpert Type 1000VA (1000W) 1KW PURE Sine Wave Inverter - 60A MPPT (720W) (Hybrid)

Geewiz Axpert Type 1000VA (1000W) Inverter Pure Sine Wave Note: 1) Fan comes on during charging, load shedding and periodically during normal operation 2) If installing in a DB board, please make sure to add a separate Earth & Neutral to the inverter output circuit to mitigate chances of surges
www.geewiz.co.za www.geewiz.co.za

and battery
www.geewiz.co.za

REVOV 100Ah 12.8V 12V Lithium-ion (LiFePO4) Battery - FIRST LIFE / 1.280kWh

Ultra-safe Lithium Iron Phosphate (LiFePO4) technology Integrated battery management System (BMS) Light weight & compact Water & dust resistant (IP56) Highly durable ABS enclosure Drop-in lead acid replacement (with LI consideration) for static storage Internal BMS for self protecting and...
www.geewiz.co.za www.geewiz.co.za


But if the budget is tight or you know you're not going to plug the fridge in then get the Mecer 720W as many many of us started on here. I still use mine

Mecer 1200VA (720W) Inverter Battery Charger (UPS) - Intelligent Fan - GeeWiz

Mecer 1200VA (720W) Inverter Battery Charger (UPS) - Intelligent Fan for sale online at the Best Prices! Door to Door and Overnight Delivery
www.geewiz.co.za www.geewiz.co.za
 
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