[Opinion] Electric Charge Machine

[Taps]

Good Day

I recently purchased an electric charge machine/invertor to charge and use a battery to counter load shedding. Please advise which size of a solar battery can i buy that i can use on 70 watts TV and 2 x 4.5 Watts electrical bulb. I expect at least 5 hrs of battery use.

[GCE]

Hi
Without knowing input voltages of your inverter your most important factor when choosing a battery is Depth of Discharge (DOD) cycles .

Most solar VRLA batteries sit around a comfortable 20% DOD - Lithium batteries around 80%

With your requirements listed you are wanting 400 VA ,excluding the losses of the inverter which vary according to the make and size, of battery usage during the 5 hours -

A 100VA VRLA battery would be borderline and sit at around 33% of DOD excluding the inverter losses - I would use at least 200VA

Ask the supplier to give you the DOD graph to see what would work best on the batteries they are supplying