Battery Kick In Lag

6 comments started 2022-08-08 last 2022-08-09
GivEnergy ProductsBattery
#1 Stevef1964

I have the Givenegry 3.6kwh inverter with 2 2.6kwh batteries.
It seems that if put a load on the system (boil the kettle) that the solar genreration cannot fully cover it goes straight to the grid to cover the short fall and then somewhere between 30-60 seconds the batteries cut in. This is annoying because then my smart meter shows an increase - so it's costing me money!!!!

I'm pretty sure this has only started recently and wonder if anyone has had this too or if it could be a configuration problem. Might even be that something has changed unbeknown to me.

I mainly notice it in the mornings when I boil the kettle when the battery power is below 30%. However I'm 99% certain the same happens when the batteries are fully charged.

Any advice would be appreciated.

T
#2 Tim

Stevef1964 I think this has been raised before. From memory, those who did the testing observed that if the house load was being supplied by battery, then the response time was quite quick but if the battery was charging, it was quite long. The suggested reason is that when the inverter is charging the battery and is supplying house load from PV, switching on a kettle requires the inverter to ramp down the battery charge (increasing the supply of PV to the house), it can then switch from charge to discharge mode and start to ramp up the supply from battery. I don't know if the inverter spends a little time during the mode change to verify settings or something but you could try testing this?

#3 TheDragon (GivEnergy)

Yes this has been mentioned before. Can be upto 60 seconds to fully take the load.
Usually 30 or so.

Had a ticket in for it, think it's just one of them things. The processor doing its calculations needs improvement. One of the features of the Gen2 Gen2 inverters was mentioned to be faster reaction time.

Yet the gen 1 can do it in EPS UPS mode. Instant reaction to loss of grid

T
#4 Tim

TheDragon (GivEnergy) Instant reaction to loss of grid

I think that's more a continuation of existing power output rather than instantaneous zero to meeting demand.

#5 TheDragon (GivEnergy)

Tim True.

But one test was charging at full rate, then cut the AC power.
EPS loads remained up

#6 judgepd

I've noticed that with firmware 3007 the general responsiveness is better than it ever was, however, if the battery is full and the inverter is showing as 'idle' then the response time is pretty terrible and takes a good 30 seconds to start meeting demand.