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Old 02-20-2015, 01:25 PM   #1 (permalink)
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Elcon chargers

I've decided on the charger I'm getting and I'm not concerned with balancing at this point. I was talking to some people over at another forum and they recommended against balancing, as it's unnecessary. HOWEVER, a BMS is in the future.

I'm getting either an Elcon 1500 or elcon 2500 charger. I had a question regarding the charge curves and such. First, what the heck is the charge curve? And second, does anyone know what the charge information should be for nissan leaf cells?

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Old 02-21-2015, 09:56 PM   #2 (permalink)
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No other answers yet, so I'll take a shot. According to evtv.me with successive charges the capacity goes up for a while, then starts that long downhill slide.


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Old 02-22-2015, 04:12 AM   #3 (permalink)
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how are the cells configured? ah and voltage?

FYI, were I to order an elcon, I would probably add external can bus control and do my own profile with a microcontroller.
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Old 02-22-2015, 05:00 AM   #4 (permalink)
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Quote:
Originally Posted by P-hack View Post
how are the cells configured? ah and voltage?

FYI, were I to order an elcon, I would probably add external can bus control and do my own profile with a microcontroller.

I have 9 modules at 8.4 volts per battery. That's 75 volts total. 60 a/h

Information was retreived from http://www.hybridautocenter.com/HAC4...new&Itemid=605

Which is actually where I bought the batteries from. Right down the road. Awesome guy.


I guess I'm still confused. I understand the basics of the charge/discharge curve, but how does it pertain to the charger? When I'm ordering a charger, how and why do they program it? Don't they have a database of charge curves for certain battery chemistry?
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Old 02-22-2015, 05:34 AM   #5 (permalink)
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I don't really understand the elcon profiles or ordering, which is why I would ensure maximum flexibility. FYI, EVTV suggested 4.1v, not 4.2, and on my actual leaf it is recommended to only charge to 80%/discharge to 20% as much as possible for battery life (I don't know exactly what 80% means though, the car just does it).

Last edited by P-hack; 02-22-2015 at 05:58 AM..
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Old 02-22-2015, 06:14 PM   #6 (permalink)
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You call elcon and tell them what your battery pack is: how many of what cells. They do the math and sell you the (generally) correct profile. you get a batch of different settings higher and lower. Your bms fine tunes the charge unless you are a dinosaur like me and run bms-less. There are some fussy points but only if you know more about your situation than they do (rare). 80% of the time they are dead on, or within a settings different.

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