What is your Powerwall 2 charging rate?

[eml2]

Whatever mode i am in , i only push 1.7kwh to the battery : Battery backup or Self powered

I wonder if it depend of the setup or something else ?

After you change the mode to self-powered in the app, did you wait long enough for the change to propagate to your PW/Gateway? It can take up to an hour.

 

[nswfugitive]

I have solar - so the charging rate is 5.0 kW. When I recharged from the grid (when I first got installed) it was at 1.7kW.

 

[Tituscrow]

OK confirm depending of the mode it is 1.7kwh or 5 kwh

 

[Parzival]

Mine are charging at 11kW right now, and I have never seen any charge restriction. I have also never seen them charge from the grid. I was told they will never do that (aside from a bug in an older software release that allowed it.)

It may be worth noting that I have not played with backup-only mode. My feeling is that keeping the Powerwalls charged to 100% all the time can't be good for them.

 

[Shygar]

Mine are charging at 11kW right now, and I have never seen any charge restriction. I have also never seen them charge from the grid. I was told they will never do that (aside from a bug in an older software release that allowed it.)

It may be worth noting that I have not played with backup-only mode. My feeling is that keeping the Powerwalls charged to 100% all the time can't be good for them.

They lose 1% a day if you don't charge them. I'm still waiting on PG&E to give the PTO so I'm stuck in backup mode with solar off.

 

[Parzival]

They lose 1% a day if you don't charge them. I'm still waiting on PG&E to give the PTO so I'm stuck in backup mode with solar off.

Yes, but what I mean is, keeping them charged near 100% all the time is likely going to cause them to lose storage capacity faster than if you cycle them and keep them closer to the sweet spot of 50%. I'm sure Tesla has modeled this extensively, but they're not sharing it, even internally.

I got my PTO last Thursday, and I've been net exporting since, which is both nice and annoying because I won't get credit for exported energy for another month. The utility gets to sell it to my neighbors and I get nothing but the satisfaction of offsetting a small amount of dirty generation.

 

[nswfugitive]

OK confirm depending of the mode it is 1.7kwh or 5 kwh

yes, that is what I've seen when first installed. 1.7 from the grid and solar charged it at 5.

 

[kevinwithnall]

I seem to be limited to 10kw with 2 powerwalls.

 

[Shygar]

Yep it's 5kW per powerwall, in or out.

 

[SoundDaTrumpet]

I seem to be limited to 10kw with 2 powerwalls.View attachment 289494

Nice to see you power your house, your house for tomorrow, and your city at the same time.

 

[kevinwithnall]

Nice to see you power your house, your house for tomorrow, and your city at the same time.

I get about 16kw peak from my panels. so as long as we get clear sky (which we often do) i have power to sapre. We only get $0.12 per kwh sent back and it costs us $0.32 per kwh to buy so the battery helps a lot.

 

[Frankman60]

Wow, there is a pretty big range that people are reporting for the maximum PW charge rate. For the posters that are experiencing a charge rate of less than 5 kW per PW, did Tesla install your PWs or were the PWs installed by a non-Tesla contractor? I”m thinking that the limitation has to do with how the PWs were installed and I am going to assume that Tesla installers know what the charge rate should be and are most likely to install and configure the PWs properly.

 

[cwied]

I'm currently getting a maximum charge rate of about 1.7 kW per PW, and Tesla installed the Powerwalls. I haven't gotten the official PTO from PG&E, though. I've heard mention that that may affect the maximum charge rate for some reason (can't find the reference, unfortunately).

 

[miimura]

I'm currently getting a maximum charge rate of about 1.7 kW per PW, and Tesla installed the Powerwalls. I haven't gotten the official PTO from PG&E, though. I've heard mention that that may affect the maximum charge rate for some reason (can't find the reference, unfortunately).

I thought that installations without solar were limited to charging at 1.7kW per Powerwall.

 

[cwied]

I do have solar, though. It actually looks like I'm peaking out at 3.3 kW. Here is an example:

 

[Shygar]

It's 1.7kW per battery if you have it in backup only mode. It should charge and discharge at 5kW max per battery if you are in self power mode.

 

[cwied]

Ah, interesting. I'm not in backup-only mode, but I do set my backup reserve to 100% during off-peak times. I guess I should set it to something lower when charging.

 

[liuping]

I do have solar, though. It actually looks like I'm peaking out at 3.3 kW.

maybe there is a limit it will send to the powerwall, when the house is still using power.

Try discharging to a higher percent the day before, so it's still charging after 1pm, when you solar minus the home usage is more than 3.3kW.

 

[Shygar]

Ah, interesting. I'm not in backup-only mode, but I do set my backup reserve to 100% during off-peak times. I guess I should set it to something lower when charging.

Yes try setting it to something lower. I leave mine at 20% reserved and the rest for self powered.

 

[TomDiego]

I do have solar, though. It actually looks like I'm peaking out at 3.3 kW. Here is an example:
View attachment 289925

The way that I read your "Battery State" you appear to be maxing out at 10kW. It appears that you have the "Battery State" as an area rather than a line. You also have "Solar Generation" as a line instead of an area. My "Battery State" line shows it maxing out at 10kW, same as yours. I did my PVOutput setup based on the instructions on the Mike's Gear website: Monitoring Tesla’s Powerwall2 on PVOutput.org. This is how he set up the parameters. With this parameter setup it looks a lot like the Tesla app but with the added Battery State line:

This is what my output looks like: