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Been discussed on here before but - video attached of a Volt been run down to no battery , no petrol .


no exactly a great experiment for actual additional range - he's shooting around in L & in sport mode& at one point is revving up to 72 Kwh power.
he still manages 2 miles so the questions :-

1. what would the range if you drove in reserve battery .. like a normal person
2. what actual additional Kwh is available in this emergency mode
3. where is this reserve taken from - the buffer added onto of the 10.2 Kwh when in hold mode ? or ontop of that?
 

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The battery is 16 Kwh normally you use 10.4 so 5.6 available so it depends what the BMS has been programmed to do and that's complicated by temperature and other factors rate of discharge etc.

so if BMS allows 75% = 1.6 Kwh @400w / mile = 4 miles
If BMS allows 80% = 2.4 Kwh @ 400w /miles = 6 miles

So five miles might be a good guess as to what the egineers would have compromised on.
 

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This has been discussed on the U.S. Forums and the common belief is you get access to 1 additional bar of battery so up to 4 or 5 miles although you also will get the "Propulsion Power Reduced".

Derek
 

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This has been discussed on the U.S. Forums and the common belief is you get access to 1 additional bar of battery so up to 4 or 5 miles although you also will get the "Propulsion Power Reduced".

Derek
Yup, the normally usable 10.4kwh is in the middle of the capacity, so at empty you have around 3kwh left. The car gives you 1kwh of that as a get out of jail free card.
 

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There's around 400Wh of 'engine buffer' below fully empty, which you can access in 'normal' mode by keeping the speed below 19mph or less AND 9kW or less. (The engine symbols will have appeared by then, but it won't start until the buffer is used). Hit either 20mph or 10kW and the engine will fire.

Once you use that 400Wh, the engine will start anyway, unless there is no petrol. In which case you get a further 500Wh or so of 'emergency' energy in 'propulsion reduced' to get you parked up.

So with no petrol you'll get around what you'd get off ~1kWh.
 
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