Inverter Battery advice

WolfmanFoxtrot said:
Im in need of professional advice. I want to buy a battery for an inverter I recently bought, its a Ellies 720 Watt Inverter. I want to know if I can run a 70 or 80 AH battery on it, I can't really afford anything like 100 or above. Just to add, I was at a local electrician store and saw they sell solar batteries which I personally know are expensive but saw a 60 ah for like 2k or something like that.
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What are you planning to run and for how long? This will determine what size battery you need. If you get one that is too small you will be wasting your money as it will die a quick death because you will take it past 50% depth of discharge which damages it and shortens its life.

edit: here is a nice calculator
www.jcalc.net

Battery size calculator

The battery size calculator calculates the battery size in ampere-hour (Ah).
www.jcalc.net www.jcalc.net

I would factor in inefficiencies by taking the wattage of the load that you worked out and divide it by 0.8 and use that value in the calculator.

Best thing is to reduce your load.
 
I'm not an expert or professional.

Well without you giving details on what battery it is, surely you can get a deep cycle for around R2500 or even cheaper.

Here is from Geewiz without shipping. You van shop around for cheaper.

www.geewiz.co.za

Enertec (Energizer) 105AH Deep Cycle Battery - 12 Volt (200-250 cycles)

Please view warranty information in the description before purchasing Voltage (V): 12 Capacity (Ah) 20 Hour Rate: 105 Cold Cranking Amps @ (- 18⁰ C) E.N.: 800 Reserve Capacity (Minutes) Load Test: 315 Amps for 15 seconds (above 9.3 Volts) Operating Temperature: - 18⁰C to 52⁰C
www.geewiz.co.za www.geewiz.co.za

As mentioned above. Don't want to discharge below 50% and runtime depends on how ouch wattage you use. Also it only has about 300 charging cycles. Mine only lasted 1-2 years.

For R500 more you van get something with 600 cycles.

But yes, as long as it is a 12V battery you can get whatever size you need. Just consider run time.

volts x Ah / watts / dod x 0.85

Inverter and batteries

Oh how I am so glad I got everything sorted at the start of the month. kept simulating load shedding to see if everything worked. Then the real thing started. What worries me now is when we go into Stage 5 and we get a 5:00 block and 2 x 2:30 of load shedding in a day. My batteries will dip...
mybroadband.co.za mybroadband.co.za

Also a lot of info in here or can ask questions here if you provide more details:

The Battery Thread (Solar / Inverter)

Seeing that there is a lot of discussion and questions around batteries for inverter and solar setups, I thought a dedicated thread is a good idea. This will help to keep the inverters threads focused on the inverters and finding information, prices, stock and general discussion and suggestion...
mybroadband.co.za mybroadband.co.za
 
RedViking said:
I'm not an expert.

Well without you giving details on what battery it is, surely you can get a deep cycle for around R2500 or even cheaper.

Here is from Geewiz without shipping. You van shop around for cheaper.

www.geewiz.co.za

Enertec (Energizer) 105AH Deep Cycle Battery - 12 Volt (200-250 cycles)

Please view warranty information in the description before purchasing Voltage (V): 12 Capacity (Ah) 20 Hour Rate: 105 Cold Cranking Amps @ (- 18⁰ C) E.N.: 800 Reserve Capacity (Minutes) Load Test: 315 Amps for 15 seconds (above 9.3 Volts) Operating Temperature: - 18⁰C to 52⁰C
www.geewiz.co.za www.geewiz.co.za

As mentioned above. Don't want to discharge below 50% and runtime depends on how ouch wattage you use. Also it only has about 300 charging cycles. Mine only lasted 1-2 years.

For R500 more you van get something with 600 cycles.

But yes, as long as it is a 12V battery you can get whatever size you need. Just consider run time.

volts x Ah / watts / dod x 0.85

Inverter and batteries

Oh how I am so glad I got everything sorted at the start of the month. kept simulating load shedding to see if everything worked. Then the real thing started. What worries me now is when we go into Stage 5 and we get a 5:00 block and 2 x 2:30 of load shedding in a day. My batteries will dip...
mybroadband.co.za mybroadband.co.za

Also a lot of info in here or can ask questions here if you provide more details:

The Battery Thread (Solar / Inverter)

Seeing that there is a lot of discussion and questions around batteries for inverter and solar setups, I thought a dedicated thread is a good idea. This will help to keep the inverters threads focused on the inverters and finding information, prices, stock and general discussion and suggestion...
mybroadband.co.za mybroadband.co.za
Click to expand...
I would whore myself out and get this as it will last 15 years:
www.geewiz.co.za

Hubble S-100 1.2kWh 12V Lithium Ion Battery

The Hubble S Series is a standalone li-ion battery. These lithium batteries are in the form factor of traditional lead-acid/agm/gel batteries.
www.geewiz.co.za www.geewiz.co.za
 
RedViking said:
OP probably saw the 100Ah at a much higher price locally. I would shop online at a reputable shop. One has to factor in shipping though, but even then, might still be worth it.
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Would still whore my body for the s-100 as stage 4+ and extended blackouts will kill a lead acid battery quick quick.
 
@WolfmanFoxtrot if you are also interested, assuming you have a similar inverter, we have a thread dedicated to these inverters. Mecer and Ellies have a very similar product.

The first 4 posts contain quite a bit of helpful info:

Mecer 2400VA Inverter (Community Support)

This Thread is for the Mecer Inverter only. My personal opinion on the unit: Seeing that there are lots of question and in lots if threads, here is my review/input on the Mecer Inverter. Instead of reposting I'll just reference here. I'll add more info soon. This should give you an idea what...
mybroadband.co.za mybroadband.co.za
 
Thanks for all the reply's, since some of you guys asked what I wanted to run was, a Desktop Computer (with monitor) and a Fiber Router, and I need it to run for at least 3 hours max everyday. The desktop itself has a 550w Power supply and the monitor is 20w.
wingnut771 said:
Would still whore my body for the s-100 as stage 4+ and extended blackouts will kill a lead acid battery quick quick.
Click to expand...
Since you said that a Lead Acid battery could die, will a Solar Gel battery be better?
RedViking said:
I'm not an expert or professional.

Well without you giving details on what battery it is, surely you can get a deep cycle for around R2500 or even cheaper.

Here is from Geewiz without shipping. You van shop around for cheaper.

www.geewiz.co.za

Enertec (Energizer) 105AH Deep Cycle Battery - 12 Volt (200-250 cycles)

Please view warranty information in the description before purchasing Voltage (V): 12 Capacity (Ah) 20 Hour Rate: 105 Cold Cranking Amps @ (- 18⁰ C) E.N.: 800 Reserve Capacity (Minutes) Load Test: 315 Amps for 15 seconds (above 9.3 Volts) Operating Temperature: - 18⁰C to 52⁰C
www.geewiz.co.za www.geewiz.co.za

As mentioned above. Don't want to discharge below 50% and runtime depends on how ouch wattage you use. Also it only has about 300 charging cycles. Mine only lasted 1-2 years.

For R500 more you van get something with 600 cycles.

But yes, as long as it is a 12V battery you can get whatever size you need. Just consider run time.

volts x Ah / watts / dod x 0.85

Inverter and batteries

Oh how I am so glad I got everything sorted at the start of the month. kept simulating load shedding to see if everything worked. Then the real thing started. What worries me now is when we go into Stage 5 and we get a 5:00 block and 2 x 2:30 of load shedding in a day. My batteries will dip...
mybroadband.co.za mybroadband.co.za

Also a lot of info in here or can ask questions here if you provide more details:

The Battery Thread (Solar / Inverter)

Seeing that there is a lot of discussion and questions around batteries for inverter and solar setups, I thought a dedicated thread is a good idea. This will help to keep the inverters threads focused on the inverters and finding information, prices, stock and general discussion and suggestion...
mybroadband.co.za mybroadband.co.za
Click to expand...
Bought one of those Energizer batteries at a local shop for like R2100, screwed the terminals on the battery and inverter and sadly there was no life, turned out it was a defective battery and was way over its expiry date , so I took it back.
 
WolfmanFoxtrot said:
Thanks for all the reply's, since some of you guys asked what I wanted to run was, a Desktop Computer (with monitor) and a Fiber Router, and I need it to run for at least 3 hours max everyday. The desktop itself has a 550w Power supply and the monitor is 20w.

Since you said that a Lead Acid battery could die, will a Solar Gel battery be better?

Bought one of those Energizer batteries at a local shop for like R2100, screwed the terminals on the battery and inverter and sadly there was no life, turned out it was a defective battery and was way over its expiry date , so I took it back.
Click to expand...
If you going to be running 3 hours every day then even more reason to go with the s-100, but why everyday, isn't this for rolling blackouts? You will have to replace your battery after a year or 2. The s-100 will last 10 years plus and still be usable as you would still have 60-80% life in it. When lead acids die they become unusable.

As for the "solar gel", yes, same thing will happen as it's also a lead acid battery. Lead acids need to be recharged to full voltage ASAP after use or else they get damaged. They take long to charge so if there is not enough time between blackouts they get damaged. If you drain them past 50% they get damaged. This applies to all lead acid types (flooded, AGM & gel). You don't get any of these issues with the s-100.

Regarding the dud energizer you bought. It was probably sitting on a shelf for too long and went flat damaging it. If you do decide to still go with lead acid, check the voltage, it must be 12.7V and above, anything lower and you probably won't get good service out of it so don't buy it.

Regarding your load, consider getting one of these and see how many Wh you use over 3 hours. This will determine what size battery you need.

Lets assume the load is 300W (but we don't know without measuring) using this calculator, see the difference between LA and Lithium? You would need a 200Ah LA but only a 80Ah lithium as you can use all the lithium's capacity:
1635670000550.png1635670029729.png
 
WolfmanFoxtrot said:
Thanks for all the reply's, since some of you guys asked what I wanted to run was, a Desktop Computer (with monitor) and a Fiber Router, and I need it to run for at least 3 hours max everyday. The desktop itself has a 550w Power supply and the monitor is 20w.

Since you said that a Lead Acid battery could die, will a Solar Gel battery be better?

Bought one of those Energizer batteries at a local shop for like R2100, screwed the terminals on the battery and inverter and sadly there was no life, turned out it was a defective battery and was way over its expiry date , so I took it back.
Click to expand...
For a little peace of mind my 750w gaming beast of a pc

draws 230w with screen on and this is mining full blast to give you an idea of consumption
 
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