There are many and varied batteries currently available, and more technologies are being developed by the day. They all have one thing in common - they store energy generated by your grid tie PV system for later use as required. (It is also possible to use the grid to store energy, but of course this does not save any money)
Battery backup systems are brilliant for when Eskom does its energy dance, or someone has stolen the cables - again..... There is something amazing about continuing your life when all around people are in darkness. Lights are still on, the TV is still showing your chosen sport or soapie. The fridge is still keeping your beer ice cold. It is a "Convenience", but it is awesome!!
Battery backup solutions for businesses and homes are a speciality of JM Solar, and we are passionate about providing a high quality of service for a reasonable price.
The battery backup solutions can either be a modified sinewave (cheaper solutions) or a sinewave inverter using a built-in battery charger with automatic changeover switch and a set of batteries.
The battery backup solution is permanently connected to the Eskom power so that while Eskom is delivering power, the battery charger recharges the batteries until a power failure happens and you need to use the backup power. But of course, during the day, your PV Panels are doing this work by preference, saving you money.
The equipment you want to back up is also permanently connected and in the case of a power failure happening, the energy backup system will automatically switch to backup power using an extra fast transfer switch, which will then provide power to you within 15 milli seconds which is very fast and standard equipment like computers, TVs, etc. are unaffected.