Why does my battery charge level jump to 100% suddenly?
This is most likely due to that the way the State Of Charge (SOC) is derived from the raw data from core electrical processes means that the unit knows exactly “where it is” when it is completely empty and when it is completely full. We have an ‘absolute reading of fullness’ – this is 100% and we can be confident that when the unit hits 100% SOC it is indeed full. However, when the unit is charging up from 20% SOC we sometimes have a less accurate picture of the charging cycle, since 20% is not actually an empty battery, the calculations of the % are derived by multiple sub-calculations, raw data and various assumptions which must be made, which cannot always produce accurate results. The system will conduct an automatic recalibration occasionally which can result in the state of charge jumping up to 100%, this is just an automate correction that can happen when the battery has not been fully charged for a long period or there has been a recent change in the usable capacity.
Why would my battery charge from the grid?
There may be a few occasions where your battery is seen charging from the mains:
- If your battery has discharged too low under it’s lowest safety limit, it will conduct a short recharge from the grid to return the battery back to a safe level.
- If you battery is unable to complete a full charge and discharge cycle over any 30 day period, the battery will automatically conduct a full charge to 100%, this is to ensure the health and longevity of the battery modules.
- If you have a Time of Use tariff plan your Battery may already be set to charge when electricity is at its cheapest.
PV generation is going to the grid before my battery is full?
Your Moixa Optimised Battery System has a maximum charge rate of 2kW, if your household is already being fully covered by PV and the battery is charging at full rate, any surplus generation would be diverted to the Grid. If your battery has automated tariff support active and generation levels are higher than predicted, the battery may not able to fully utilise it by charging, if this power is not needed by the household then it would be diverted to the Grid.
Can I change when my battery charges and discharges?
Your battery can be set to utilise your energy tariff by charging up at set times from the grid. You can find out more about changing the Operation mode and setting your own schedule on our Optimisation page here.
If you would like your battery to work alongside another solar diverting device by only operating as set hours each day, or would like the battery to remain idle at set hours for better compatibility with other devices, such as an EV charger, just contact the support team who can help you set this up.