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hey guys - thanks for a great discussion! I'd love to hear more about your suggestions on how to improve our product - please post here and let us know why. thanks! Valery

All - cross-posting from http://www.mynissanleaf.com/viewtopic.php?f=26&t=15444&p=379055#p379055 to avoid re-typing and re-inserting images etc - next rev of the JuiceBox PCB is in with a few tweaks and changes. Check it out and let us know what you think! Thanks, Valery.

Interesting. I wonder what kind of Power Factor VOLT's charger has. If the power factor is lower than 1.0, real power will be lower than apparent power. The generator will react to the apparent power level and might cut out earlier because of that. This is of course just a conjecture - perhaps...

Inverter is not the best place to tap. For customer installs we would tap in the main battery junction. I would recommend air-cooled - this way you wouldn't have any dependencies and messy connections to the car's cooling system. The concurrent operation is a subject of ongoing research...

Thanks for considering us. We are using one of our units on RAV4EV now. You can see some videos in our YouTube Channel. Let us know if you have any questions. Thanks, Valery

You would open the case and there will be a button on the PCB, yes. FTDI allows you to connect from Arduino IDE and launch Serial Monitor from Arduino. Upon power up, JuiceBox will print its settings every ~1 second. You can then adjust current via trimpot and observe changes in Serial...

Yes, this is accurate. The ship with a batch of 300 J1772 cables is at sea already.

Thanks Chris for you corrections. I remembered you mentioned 500 units number before in one of your posts late last year so I used that. Should have checked. Anyway, my point stays - we need 100,000 of these out there, not 1,000 or 2,000. How are we going to do that?

Thanks guys for your feedback - we pay very close attention and try to address all constructive feedback points. A lot of people commented on current setting interface in the Base Edition. This is actually a non-trivial engineering task. We can of course drill a hole in the case. In fact, the...

Oh yes, you can absolutely do that. Power factor will be pretty bad but it will work. A number of our charger customers do just that.

The way we would do it would be a 3-phase Boost topology PFC rectifier. This topology is immune to loss of one phase and hence is intrinsically suitable for ambiguous power source you are describing. It would also work off one, two, or three J inputs without any change in hardware. You plug in...

Thanks Manny for your kind words!

Manny - thanks for posting this - very interesting. We have noticed quite a few differences in how exactly the charging protocols are implemented across various vehicles... So far, the Volt and RAV seem to be the most, and Leaf is the least demanding ;-) PS. We have just released a video manual...

this will always happen due to particular shapes of discharge curves for the involved chemistries. AUX pack (LFP) has a much flatter curve relative to the Tesla pack. So almost no matter how many cells you have, you will always fully discharge the AUX before you fully discharge the Vehicle pack...

only this time - for that very reason, yes ;-). We have just built a power distribution unit to manage battery connections - see photo at https://docs.google.com/a/emotorwerks.com/file/d/0B8zi8eqgqJWod05tcEhKSG1DQ0k/edit. It will also handle our special battery arrangement for mobile CHAdeMO...

first real test of that extender pack yesterday - trip to Santa Cruz and back - total of 108 miles at 75-80mph (well, more like 60 on rte 17 ;-). With 70 miles remaining according to the guessometer. JuiceBox-metered charging says ~55kwhrs went back into the packs - The first ramp is native...

firmware V8.7.2 posted on JuiceBox site at http://emotorwerks.com/JuiceBox_Public/8.7/50%20-%20Firmware/8.7.2/. New features: * Proper interface for a settings menu using the LCD and wireless remote * Menu option 1: Current limit change at any time via a wireless remote - both for 120V and 240V...

maybe. PM me with your benefits package description. PS. we have just become an official sponsor of this forum, as well. Mike does a great job across the whole network. V

109 cells. At 3.5 CV, this is 381.5 - or my observed Extended charge CV point. So CVs are matched. On the bottom, we have observed ~310V when the range gets to 10 miles. This would translate roughly to 2.8V per LFP cell. So the bottom matches, as well. But leaves very little room for balancing...

another fun don't-do-this-at-home RAV4 hack from EMotorWerks - a 38kWHr additional pack in parallel with the main battery. Confirmed no-error operation in all modes. Will see what the onboard computer recalculates as the resulting range ;) PS. Batteries will be covered, of course ;-)