[priccijr]

I purchased the Charge Point home flex charger for my home when I bought my truck. I just had it installed on Sunday. According to Charge Points website with a 60 amp breaker I should get 48 amps to the charger which should equate to 11.5 kWh and 36 mphc. The max I’ve seen has been 10.7 amps with an average of 9.97 and only 26 mphc max. I’ve called Charge Point and they opened a case. My question is has anyone else seen this with any of the other home chargers? Is this normal?

 

[jimfigler]

I purchased the Charge Point home flex charger for my home when I bought my truck. I just had it installed on Sunday. According to Charge Points website with a 60 amp breaker I should get 48 amps to the charger which should equate to 11.5 kWh and 36 mphc. The max I’ve seen has been 10.7 amps with an average of 9.97 and only 26 mphc max. I’ve called Charge Point and they opened a case. My question is has anyone else seen this with any of the other home chargers? Is this normal?

How long is your run from the panel to the charger. What gauge and type of wire did you use?

 

[priccijr]

I’m about ten feet from the panel and we used 6/3 copper wire with the 60 amp breaker.

 

[R.I.P.]

I purchased the Charge Point home flex charger for my home when I bought my truck. I just had it installed on Sunday. According to Charge Points website with a 60 amp breaker I should get 48 amps to the charger which should equate to 11.5 kWh and 36 mphc. The max I’ve seen has been 10.7 amps with an average of 9.97 and only 26 mphc max. I’ve called Charge Point and they opened a case. My question is has anyone else seen this with any of the other home chargers? Is this normal?

When you set it up you can select amperage. Did you select 48a?

 

[KElkhorn]

I believe charging gets throttled toward the top and at the bottom end of capacity, but you should see near full output at least in the 30% to 80% range. . . . .SR or ER truck?

 

[Voltz]

I should get 48 amps to the charger which should equate to 11.5 kWh and 36 mphc

Can you measure your voltage at the EVSE?

BTW, with Lightning, 48A charging will yield around 23 miles of added range per hour of charging, probably closer to 20 real world. (That's 2.0 mi/kWh, 48A, 240V at the EVSE, 10% loss)

 

[priccijr]

Can you measure your voltage at the EVSE?

BTW, with Lightning, 48A charging will yield around 23 miles of added range per hour of charging, probably closer to 20 real world. (That's 2.0 mi/kWh, 48A, 240V at the EVSE, 10% loss)

I’m about ten feet from the panel and we used 6/3 copper wire with the 60 amp breaker.

When you set it up in the app it asks your breaker amperage and if it’s hardwired or plugged in.

 

[priccijr]

I believe charging gets throttled toward the top and at the bottom end of capacity, but you should see near full output at least in the 30% to 80% range. . . . .SR or ER truck?

It’s a SR I was at about 54% at the time of testing.

 

[priccijr]

Can you measure your voltage at the EVSE?

BTW, with Lightning, 48A charging will yield around 23 miles of added range per hour of charging, probably closer to 20 real world. (That's 2.0 mi/kWh, 48A, 240V at the EVSE, 10% loss)

So what I’m getting is correct? Because Charge Points website says 36 miles at 48 kWh.

 

[jimfigler]

So what I’m getting is correct? Because Charge Points website says 36 miles at 48 kWh.

I would never go off miles added. That value is too variable.

 

[jimfigler]

I’m about ten feet from the panel and we used 6/3 copper wire with the 60 amp breaker.

It’s not 6/3 Romex is it?

 

[priccijr]

It’s not 6/3 Romex is it?

Not sure. The electrician bought the wire.

 

[Pitch2Johnny]

I believe charging gets throttled toward the top and at the bottom end of capacity, but you should see near full output at least in the 30% to 80% range. . . . .SR or ER truck?

This is only true for DCFC charging. Regular Level 2 charging should be steady at close to the nameplate

 

[G-Zeus]

Same setup as you, and charging an SR Lariat with a 60A line. Here’s my chart from last night:

 

[KElkhorn]

This is only true for DCFC charging. Regular Level 2 charging should be steady at close to the nameplate

Mine definitely slows down above 90%

 

[Pitch2Johnny]

Mine definitely slows down above 90%

Yes, that makes sense because of battery chemistry. Don't charge above 90% unless you really need to.

Stay between 30% to 85% on a regular basis for optimal battery longevity.

The reason I say 85% rather than 80 or 90 is because there's threads out there that say 80 and threads out there that say 90 the manual actually says 90%.

 

[priccijr]

This is from the day I tested. I haven’t had time to test it lately. I’m able to charge at work so this will only be for emergencies only. I’m on vaca next week so I’ll have more time. Charge Point did get back to me but they had the wrong info. The service person wrote I was getting 11.5 kw in the case file so I had to call them back and straighten it out. Will the one kw make that much difference? Should I just drop it?

 

[KElkhorn]

View attachment 5957

This is from the day I tested. I haven’t had time to test it lately. I’m able to charge at work so this will only be for emergencies only. I’m on vaca next week so I’ll have more time. Charge Point did get back to me but they had the wrong info. The service person wrote I was getting 11.5 kw in the case file so I had to call them back and straighten it out. Will the one kw make that much difference? Should I just drop it?

Just to clarify from your original post, you are getting 10 kW on an 11.5 kW charger? I think initially you had said 10 amps, which is more like 2.4 kW.

Some variance is going to happen for a variety of reasons. For instance, my actual voltage is about 247, so if I pull 48 amps I'm actually getting almost 12 kW. If i was running at 230, I'd be at 11 kW.

Are there any dials or switches on your EVSE to limit to 40, or is there a setting in the app?

 

[priccijr]

Sorry I did mistakenly say amps instead of kw. Just and app setting at time of setup for the kw setting. It asks breaker size, wired or plugged and I think that’s it.

 

[Voltz]

So what I’m getting is correct? Because Charge Points website says 36 miles at 48 kWh.

Chargepoint has no way of knowing your exact driving efficiency. They are using an algorithm that is assuming higher driving efficiency (3.125 mi/kWh). Lightning is usually an optimistic 2.0-2.2 mi/kWh. It's all math.

Sorry I did mistakenly say amps instead of kw. Just and app setting at time of setup for the kw setting. It asks breaker size wired or plugged and I think that’s it.

#1, I wouldn't worry about the kW difference. I asked you in Post #6 to measure your line voltage to the EVSE. What your chart indicates is probably a line voltage of 208V, a normal voltage for a leg of three phase service. By any chance, is this at a business?

10kW = 10,000 Watts/48 Amps = 208 Volts

Another poster asked about whether the electrician installed 6/3 Romex. If he was following the NEC and using that size of Romex cable, he would have set the EVSE to charge at 40Amps, which yields a more likely scenario of your voltage being in the normal residential range of 220-250V: 250 Volts X 40 Amps = 10,000 Watts or 10 kWh.

Edit: Is the Home Flex wired or plugged into a receptacle? I think many of us may have assumed it is hard-wired being on a 60A breaker. Is the wire installed in conduit?