I haven't found a comprehensive overview (it could be the 70hp difference), but this www.allisontransmission.com/en-gb/transmissions/models/h-40-50-ep says it does brake regen, and this fleetnewsdaily.com/allison-transmission-unveils-electric-component-option-buses-coaches/ says they can electrify accessories like air brakes and HVAC
It can use this www.greencarcongress.com/2014/09/20140909-allison.html 20kWh Li-ion battery pack.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.What the headline giveth, the last paragraph taketh away. -- Scott Ott
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