Evening all. First time contributor, long time lurker 
I had a new solar system installed at the beginning of September (details below). Thus far, really happy. I'm already seeing savings in excess of my expectations. However, over the last few nights I've noticed a very erratic charge rate when charging my SolaX battery from the grid. I generally set a two hour charge window to correspond to the Octopus Agile tariff when it's cheapest. Up until a few days ago I was waking up to a full battery going from 10% to 100% in the two hour charge window.
From around the 7th of November the battery stopped getting to 100% and only achieved numbers like 51% 62% from my two hour charge window. Looking at the charge history for these periods the battery is only achieving a charge rate of 10amps for the first hour or so and then gradually rising to around 19amps toward the end of the charge and only occasionally hitting 25+amps.
As an aside I have "boosted" the charge when I realised that it wasn't fully charged and and have achieved 25amps almost from the get go at 7am! Hence going from 50% to 100% in a little over an hour
My question is this:-
Am I being unrealistic to expect the battery (5.8kWh) to charge from 10%-100% in two hours (Even though it has done frequently in the past. What would the normal charge time be?
What could be the cause of this low charging rate?
I have been in contact with Solax technical support who have tried to brush me aside by telling me that this is due to the UK getting colder recently and that will affect the battery performance. By that token I'll be proper stuffed when it gets really cold! I think that theory is a bit out there considering the temperature here in Mid Wales has not changed dramatically over the last few days. Happy to be corrected though if that really is the case.
Many thanks in advance for you thoughts.
Warm regards
Leigh
12 x 435w Longi Solar Panels
SolaX X1 Hybrid 5.0kW Inverter
SolaX Triple Power 5.8Kwh Master Battery
Warm regards
Leigh
I had a new solar system installed at the beginning of September (details below). Thus far, really happy. I'm already seeing savings in excess of my expectations. However, over the last few nights I've noticed a very erratic charge rate when charging my SolaX battery from the grid. I generally set a two hour charge window to correspond to the Octopus Agile tariff when it's cheapest. Up until a few days ago I was waking up to a full battery going from 10% to 100% in the two hour charge window.
From around the 7th of November the battery stopped getting to 100% and only achieved numbers like 51% 62% from my two hour charge window. Looking at the charge history for these periods the battery is only achieving a charge rate of 10amps for the first hour or so and then gradually rising to around 19amps toward the end of the charge and only occasionally hitting 25+amps.
As an aside I have "boosted" the charge when I realised that it wasn't fully charged and and have achieved 25amps almost from the get go at 7am! Hence going from 50% to 100% in a little over an hour
My question is this:-
Am I being unrealistic to expect the battery (5.8kWh) to charge from 10%-100% in two hours (Even though it has done frequently in the past. What would the normal charge time be?
What could be the cause of this low charging rate?
I have been in contact with Solax technical support who have tried to brush me aside by telling me that this is due to the UK getting colder recently and that will affect the battery performance. By that token I'll be proper stuffed when it gets really cold! I think that theory is a bit out there considering the temperature here in Mid Wales has not changed dramatically over the last few days. Happy to be corrected though if that really is the case.
Many thanks in advance for you thoughts.
Warm regards
Leigh
12 x 435w Longi Solar Panels
SolaX X1 Hybrid 5.0kW Inverter
SolaX Triple Power 5.8Kwh Master Battery
Warm regards
Leigh
