Custom Enginer PHEV (8kWh)

[atfsi]

Originally Posted by cabledave

Was that really necessary? I don't recall the post where everyone selected you to be the forum police. Lighten up Nancy Drew . . .

Coulomb, to the discussion, most of us have picked up some manners during our life so far.

Sounds like a conspiracy of one.....

[plugmein2]

Where is Krousb? I want to hear more about his 8KW kit. Is it working?

JOANNA

[krousdb]

Originally Posted by plugmein2

Where is Krousb? I want to hear more about his 8KW kit. Is it working?

JOANNA

Everything is working fine. I have just been too busy to post lately. Mileage is down to about 80MPG due to colder, wet weather and a higher percentage of highway mileage. Still struggling with balancing, but hopefully tis weekend I will solve that problem.

[krousdb]

Averaging 77 MPG now due to cooler weather and more % highway miles. Normally I would get 62 MPG. As it turns out, I will not be able to plug in at work as I had been promised so running one converter with 8kWh gets me to work and back, about 135 miles. Actually I normally run out at about 125 miles but that is good enough for me.

Ive been very busy lately so I havent been able to check in very often. If you have any questions, just send me a PM.

Dan

[banshee08]

Dan,

I wanted to thank you for the wealth of information here. I am waiting for all the parts for my 2010 version of the 8KWH 2 converter system. I am planing to put 4KWH of batteries in the spare tire well. I do have one question though. I was wondering how long did it take charge the 8KWH pack with only one charger?

Thanks,

Chan

[krousdb]

Originally Posted by banshee08

Dan,

I wanted to thank you for the wealth of information here. I am waiting for all the parts for my 2010 version of the 8KWH 2 converter system. I am planing to put 4KWH of batteries in the spare tire well. I do have one question though. I was wondering how long did it take charge the 8KWH pack with only one charger?

Thanks,

Chan

It takes twice as long to charge 8 kWh, about 10 hours.

[banshee08]

Thanks Dan. Just went on my first run and the RED LED started flashing in about 11 miles. I check the battery and the voltage read 53.3V. I changed out the converter to my second converter and all was working again. The second converter was charging the OEM much much faster. Do you think my first converter is bad??

[kiettyyyy]

Originally Posted by banshee08

Thanks Dan. Just went on my first run and the RED LED started flashing in about 11 miles. I check the battery and the voltage read 53.3V. I changed out the converter to my second converter and all was working again. The second converter was charging the OEM much much faster. Do you think my first converter is bad??

Are you using the Mottcell batteries? Were you attempting to use 2 DC/DC converters at the same time?

If so, that just won't work. Even though the spec sheet says that these batteries are rated for <=3.0C, it's really <=2.5C. What's 2.5C? 97.5 amps.

If you use 2 DC/DC converters, you'll be pulling roughly <= 110 amps.

This explains the blinking red LEDs. I had the same problem. I remedied the problem by paralleling in an additional 2kWh using Thundersky batteries. These batteries have a better tolerence on the instantaneous and continuous current usage..

[banshee08]

No I was just trying to use one converter. I received the wrong converter in my kit. It is for 320V system and boy did it get hot. I ran it for just 5 miles and it melted the rubber terminal covers on the Mottcells. I mounted teh 240V converter back and will be testing again after a full charge and balance tonight. As soon as the system test out fine I will mount the the system in the proper place and will be putting another 4KWH of batteries in the tire well along with adding a second converter to the case.