wimpie007
Member
- Joined
- Apr 8, 2017
- Messages
- 81
Hi everyone!
I've had my system up and running since august 2019, initally with 10* 280 Wp panels and 7 kWh of storage (14S60P, 136 Ah).
After adding the second set of packs to get 14 kWh (14S120P) and another 2 panels to better match the MPPT startup voltage of the PIP5048-GK, I'm a bit let down by the overall performance.
It seems like the PIP's own power usage is around 65 - 75 Watt, which accounts to about 1,5 kWh of losses each day.
On these winter days, I find myself charging up the batteries with grid power, only to burn it again in heat losses.
It seems I'd better disconnect the batteries after they're charged up, to avoid them going too low from the inverter's drain.
But even if I disconnect the batteries, the 65 - 75 W needed would just come from the grid (in by-pass mode).
It seems like a terrible waste of grid power now, but a shame if I have to bypass the entire setup during winter months to avoid these losses.
As it is now, I'm consuming MORE grid power than before I added my powerwall + solar.
Is this "normal behaviour"?
I've had my system up and running since august 2019, initally with 10* 280 Wp panels and 7 kWh of storage (14S60P, 136 Ah).
After adding the second set of packs to get 14 kWh (14S120P) and another 2 panels to better match the MPPT startup voltage of the PIP5048-GK, I'm a bit let down by the overall performance.
It seems like the PIP's own power usage is around 65 - 75 Watt, which accounts to about 1,5 kWh of losses each day.
On these winter days, I find myself charging up the batteries with grid power, only to burn it again in heat losses.
It seems I'd better disconnect the batteries after they're charged up, to avoid them going too low from the inverter's drain.
But even if I disconnect the batteries, the 65 - 75 W needed would just come from the grid (in by-pass mode).
It seems like a terrible waste of grid power now, but a shame if I have to bypass the entire setup during winter months to avoid these losses.
As it is now, I'm consuming MORE grid power than before I added my powerwall + solar.
Is this "normal behaviour"?