chocoheadfred
New Member
- Joined
- Oct 25, 2021
- Messages
- 21
Here's my system:
2 x 48V 100AH Water-Proof Bluetooth Battery by EG4 = 200AH
5000W LVM- ES Off-Grid 240V Growatt Inverter with Solar Charge Controller + Growatt Split Phase Transformer
16 x 335W panels, wired in 2 strings, joined in a combiner box
I'm constantly running out of power in my tiny house overnight, with average low temperatures this time of year in NC around 25 - 35.
I'm set at 54 for Float Voltage Point and Battery Undervoltage cut-off point at 46. Any recommended changes to this?
Either way, I am not storing nearly enough energy as I constantly lose power between 2AM - 6AM most every night depending on how cold it is. I've been averaging 5-7kWh Load Consumption yet this is without anyone living in it currently (just fridge and mini split set at 60). I'd expect someone in there full-time would be 2x this. I generate more than enough as I can fully charge the batteries in about 2 hours under full sun so generation isn't the issue. Also, this issue is much more relevant in the winter as I'll be cranking out plenty of power in the summer when temps are closer to 95 during the day.
What is your recommendation to increase storage capacity, add more batteries or run a trickle charge from my barn about 200 ft away? Both options are ~$2k and I'm wondering if one would be better than the other. I think trickle charge may add life to the batteries long-term yet not sure if just adding another battery/batteries today would better prevent running out of power.
For the charge I'd likely get some 4-4-4-4 URD Direct Burial Cable.
2 x 48V 100AH Water-Proof Bluetooth Battery by EG4 = 200AH
5000W LVM- ES Off-Grid 240V Growatt Inverter with Solar Charge Controller + Growatt Split Phase Transformer
16 x 335W panels, wired in 2 strings, joined in a combiner box
I'm constantly running out of power in my tiny house overnight, with average low temperatures this time of year in NC around 25 - 35.
I'm set at 54 for Float Voltage Point and Battery Undervoltage cut-off point at 46. Any recommended changes to this?
Either way, I am not storing nearly enough energy as I constantly lose power between 2AM - 6AM most every night depending on how cold it is. I've been averaging 5-7kWh Load Consumption yet this is without anyone living in it currently (just fridge and mini split set at 60). I'd expect someone in there full-time would be 2x this. I generate more than enough as I can fully charge the batteries in about 2 hours under full sun so generation isn't the issue. Also, this issue is much more relevant in the winter as I'll be cranking out plenty of power in the summer when temps are closer to 95 during the day.
What is your recommendation to increase storage capacity, add more batteries or run a trickle charge from my barn about 200 ft away? Both options are ~$2k and I'm wondering if one would be better than the other. I think trickle charge may add life to the batteries long-term yet not sure if just adding another battery/batteries today would better prevent running out of power.
For the charge I'd likely get some 4-4-4-4 URD Direct Burial Cable.