Help with backup solution: capacity calcs

[Stokstert]

So I've identified a potential.

Inverter Trolleys

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www.geewiz.co.za

Really don't need the solar stuff. More so since according to Geewiz the batteries (Hubble S100) that they use aren't compatible.

How are these Axpert inverters? Have read some posts that say not good.
But then for the Mercer ones also not good in conjunction with Hubble batteries?.

I have one of those for two years already without any problems at all. After the first year, I fitted S120's and used the AGM batteries for my 14-year-old Tedelex Intellypower4 system for TV.

 

[TheChamp]

So I've identified a potential.

Inverter Trolleys

Buy 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

Really don't need the solar stuff. More so since according to Geewiz the batteries (Hubble S100) that they use aren't compatible.

How are these Axpert inverters? Have read some posts that say not good.
But then for the Mercer ones also not good in conjunction with Hubble batteries?.

What is not compatible to what according to Geewiz?

 

[c3n0byt3]

What is not compatible to what according to Geewiz?

They state this:
"The batteries in this unit are designed for backup use only - not for daily SOLAR OFF-GRID charging/discarging"

 

[TheChamp]

They state this:
"The batteries in this unit are designed for backup use only - not for daily SOLAR OFF-GRID charging/discarging"

I see, but just because you have solar doesn't mean you have to cycle the batteries, so compatibility is not an issue, solar is very helpful to have for those unexpected extended outages.

The Mecer/Axpert are good inverters, not sure about the "Axpert types".

 

[wingnut771]

They state this:
"The batteries in this unit are designed for backup use only - not for daily SOLAR OFF-GRID charging/discarging"

Looks like they copied and pasted the info from their "high cycle" battery type kit. It's just Geewiz being lazy. Any inverter with 3 stage charger and voltage selection is compatible, ie: The Axpert in the pic so feel free to use LFP.

 

[c3n0byt3]

Looks like they copied and pasted the info from their "high cycle" battery type kit. It's just Geewiz being lazy. Any inverter with 3 stage charger and voltage selection is compatible, ie: The Axpert in the pic so feel free to use LFP.

Good to know thanks.
I see in the manual charging amps and voltage is adjustable.
So this shouldn't be a problem with charging the Hubble S100 appropriately right?
I read there was an issue with the Mercer inverters not charging to correct voltage.

 

[wingnut771]

Good to know thanks.
I see in the manual charging amps and voltage is adjustable.
So this shouldn't be a problem with charging the Hubble S100 appropriately right?
I read there was an issue with the Mercer inverters not charging to correct voltage.

No worries. The problem with the mecer is the fan not turning on sometimes after a light load because the battery voltage is still high in the (LA "float" range) tricking the inverter to carry on floating (no fan) instead of bulking (with fan) causing it to overheat with 20A setting, it seems to survive on 10A charge setting. The Hubble can charge up to 100A, but 50A or less is recommended, 25A is what I would use.