6.3. Full Recharge Upon First Installation
Our batteries are delivered and shipped in a partial state of charge. Prior to discharging the battery it
should be fully charged to the float stage.
Important:
This fist initial charge will allow the battery BMS to perform a cell balancing process and ensure all cells are
at the same state before regular cycling. It will also allow the external SoC (State of Charge) counter to set
itself to known battery SoC (some SoC counters may take a few cycles to learn the SoC).
6.4. Calibration to 100% (Weekly recharge to 100%)
Internal cell balancing of the Eco P Series battery happens during the end of the charging process.
It is important for the health of the battery and to ensure the battery capacity does not slip over time that the
batteries are charged to 100% at least once every 7 days as a minimum.
6.5. SoC (State of Charge) Drift
State of Charge drift happens when the product that is calculating SoC builds up an accumulative error.
This error is generally due to tolerance of components that measure voltage & current and algorithms used
to calculate how full the battery is. Most products will reset its accumulative error when the system gets
to100% SoC or Float.
It is important that a well designed battery storage system reaches Float stage or 100% as regularly as
possible, preferably every 2 to 3 days to reset SoC drift, however can be extended if required.
SoC drift can be addressed in many ways, and some examples are below.
1. Sufficient solar sized to charge batteries to Float or 100% on the winter Solstice
2. Backup source installed (grid or generator) to allow charging of batteries during extended bad weather
or high load events.
3. Ascertain from PCE manufacture the accuracy of the SoC calculator. If a higher more accurate shunt
can be used with the PCE to monitor system SoC, then this should considered.
Eco P Series Installation Manual V3.0
21/10/2021
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