Electric Auto Association
East (SF) Bay EAA Chapter

Batteries

Saturday, March 22, 2008
Location: Alameda
Attendance: 30

In March we had a lively meeting with a full range of discussion on the main variable in EVs - the batteries. Currently most conversions and electric bicycles are still focused on affordable lead acid batteries. But management and charging systems are improving to make NiMH and Lith batteries more of the mainstay this year. The goal is to reduce the weight and size of the pack, to maximize the energy capacity, allowing the EV to accelerate and go the distance.

And remember to participate in Earth Day events and our upcoming Rally.

EVs were on-hand and informal Q&A took place in the parking lot after the meeting.

Sidenote: for energy conversion, see the Energy Information Administration's conversion page. Basically 1 KWh electricity = 3412 BTU, and 1 Gal gasoline = 123976 BTU. Therefore 1 Gal gasoline = 36.335 KWh of electricity.

 

mpg wh/m gas vs elec wh/m mpg
mpg wh/m   wh/m mpg
15 2422   150 242
20 1817   175 208
25 1453   200 182
30 1211   225 161
35 1038   250 145
40 908   275 132
45 807   300 121
50 727   325 112
55 661   350 104

 

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