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A short but essential blog. The recently released version of the VictronConnect App now includes an update for Victron Energy’s Lithium Smart batteries (12.8V & 25.6V). The update (via the app) now wisely disables the charge when the battery cell temperature is below 5 degrees C, as charging at lower temperatures accelerates battery degradation.
You will note the datasheet says:
Operating temperature – Discharge: -20°C to +50°C and Charge: +5°C to +50°C.
In other words +5°C is the minimum required temperature for charging.
With the new VictronConnect, Lithium Smart batteries will now automatically be updated. Here’s a screenshot of what you will see, where charging is blocked below +5°C
Disabling charging is done because Victron Energy tests and research have shown that lithium iron phosphate batteries charged below +5°C will start to damage the cells. If they were charged at that or lower – and whilst they may appear to be charging normally – permanent damage would be done. Lithium Smart Battery update (set to default) ensures that is not a possibility.
Whilst some people may wish to charge below the default +5°C or in an emergency and although the app will allow such actions – this clearly voids any warranty you may have. In such a case you would see this:
Charge disconnect when the temperature drops below 5°C (providing the VictronConnect update is in place) applies when using these products with Victron’s Lithium Smart batteries (12.8V & 25.6V):
John Rushworth
