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HBPowerwall (Official)
(06-13-2018, 07:18 PM)Korishan Wrote:
(06-13-2018, 06:44 AM)travisszylak Wrote:
(01-21-2018, 07:54 PM)daromer Wrote: You cannot hook your own home built battery pack. The Tesla battery pack is not even close in terms of how it works to our builds. You need a lot more than just a 10kWh of battery pack that is home built to hook it up to a grid-tie system Im afraid.

So if i am getting solar installed with an inverter that is battery compatible and my house uses ~10kwh per day.
Why would i need more then say 10-15kwh home built battery pack?

If you only drive from home to work and use only 10 liters of fuel, why would you need a tank that holds 20 liters? Just in case you need to travel further, or go longer between fuel ups. Solar isn't always able to collect sun light. There are times where it will take all day to get what you could get in 1 hour in full direct sunlight. The extra power gives you a large buffer to work with. Lets say a storm rolls through and blocks the sun for 2+ days. If you have 4 times the storage of what  you use in 1 day, you could last those 2 days without having to cut back on what you normally would use (like shutting off the water heater, no central air, no clothes dryer, etc)


(06-13-2018, 10:59 PM)hbpowerwall Wrote:
(06-13-2018, 06:44 AM)travisszylak Wrote:
(01-21-2018, 07:54 PM)daromer Wrote: You cannot hook your own home built battery pack. The Tesla battery pack is not even close in terms of how it works to our builds. You need a lot more than just a 10kWh of battery pack that is home built to hook it up to a grid-tie system Im afraid.

So if i am getting solar installed with an inverter that is battery compatible and my house uses ~10kwh per day.
Why would i need more then say 10-15kwh home built battery pack?

With my battery pack I still run my batteries flat twice a week - BUT if I had a hybrid inverter where I could hook up my other 6kw of solar to the batteries I'd bee MUCH better off.. Done again - Hybrid inverter not off grid would have been my choice!

Yes, Obviously larger KWH pack would be better, but than again you would need enough solar panels to charge the pack. I'm not too concerned on running out of power in the batteries as i would not be fully off gird. The batteries would just help out at night to lower the power bill. 

I am only just starting the battery build and have planned to go with the 10 - 15 kwh as i only use ~10kwh a day and maybe 7-8kwh's of that is at night and i can always add more batteries later if i require. But then again it is always time, money, and availability of 18650s.

I am currently looking at 5kw of solar and the Solax Hybrid inverters, but i'm not sure if they will work with a DIY 18650 pack.
hbpowerwall and Staahhshhh like this post
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(01-21-2018, 07:54 PM)daromer Wrote: You cannot hook your own home built battery pack. The Tesla battery pack is not even close in terms of how it works to our builds. You need a lot more than just a 10kWh of battery pack that is home built to hook it up to a grid-tie system Im afraid.

Grid-tie systems are for switching over to the grid when your solar/battery system is insufficient, or to supply excess to the grid.   

Not sure what your point is about a limited capacity of 10kWh of battery storage is.  Anything more than zero battery storage is a benefit.
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