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Old 02-28-2019, 06:41 PM   #1 (permalink)
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Default Chevy Volt Lithium subpack(s) available

Fellow Insighters:

I have used Chevy Volt pack that I'm about to tear down into it's 7 48V and 2 24V sub-packs.

From what I've read here, it should be possible to swap in 3 of the 48V with some clever BMS fooling (as discussed in many threads here)

Please contact me if you are interested.
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2001 Blue CVT 205k miles, purchased 2010/100k
2011 White Chevy Volt 175k, purchased 2018/166k
1984 Black Diamondback mtn bike 36v hub motor 5 NiMH sticks
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Old 03-01-2019, 01:56 AM   #2 (permalink)
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4x48v or 3x48V and 1x24v pack would be better IMHO

What capacity size/ weight / dimensions etc are they?
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ObdIIc&c, Imac&c, ImaBoost, Current Hacks available. Enqs to 150mpg[at]gmail.com
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Old 03-01-2019, 06:01 PM   #3 (permalink)
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The 1 gen Voltec battery consists of 288 LiOn cells grouped into 96 "blades" of 3 pouches each "welded" together for a 360V 16kWh (45Ah) full pack weighing 435lb. 96s3p .

https://en.wikipedia.org/wiki/Chevrolet_Volt#Battery

I haven't broken it down from it's full format yet, but from what I see (and have read), the "natural" breaks (mechanically and electrically) are the 7x48V (12s3p) and 2x24V (6s3p) modules.

It appears that many have further broken the subpacks electrically (but not mechanically) to operate as, for example, 12V or 24V solar battery backup systems.

Mechanically, each 3p module is probably the smallest you can break down to reasonably, the reason I plan to stop at 12s3p and 6s3p is that is the level at which further breakdown would be mechanically fragile, though if i had a specific configuration to put them in as I took them apart.

Here is a pretty good video of someone doing the teardown:

https://www.greencarreports.com/news...down-shows-all

Indications are they weigh about 45 lbs per 48V sub-pack. I'm looking around for more precise numbers but best I can estimate, a 48V sub-pack is about 12"Wx12"Hx9"D. I'm assuming the right fit for an Insight would be 3x48V.

FWIW they are generally advertised for about $500/48V sub-pack on e-bay but I would do better for the right person/project. These batteries are known for their good thermal and electrical management (e.g.using only the middle 10kWh of the capacity and having liquid heating/cooling). I will test each 3p "blade" and won't offer any sub-packs that are not within a narrow range. I expect to find only one (or very few) bad 3p blades.

- Steve
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2001 Blue CVT 205k miles, purchased 2010/100k
2011 White Chevy Volt 175k, purchased 2018/166k
1984 Black Diamondback mtn bike 36v hub motor 5 NiMH sticks
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