Battery Statistics
Genesis G42EP - 12 volt 45 AH
PbA - AGM
$230 USD
Voltage range: 11.7V - 12.9V
Current (max): 300A
Power (max): 3.60 kW
Weight: 32.9 lbs
Size (inches): L-7.78 W-6.53 H-6.71
Volume: 340 cu-in
Total energy: 540.00 watt-hours

Links...
Enersys
G42EP spec sheet
Cost: 2.35 Wh/$ ($ 0.43/Wh)
Weight: 16.41 watt-hours per lb.
Volume: 1.59 watt-hours per cu-in
Cycle life...
400 cycles @ 100% DOD - 216.00 kWh
Life cost: $ 1.06/kWh
109 watts (max)/lbs.

Charging Information...
Voltage (max): 14.7 V
Current (max): 26 A
Power (max): 382 watts
Build a pack with this battery...

Series batteries: Parallel batteries:
Cost: $
Watt-hours per mile:
Optional pack title:
Metric

http://www.zuglet.com/batteries/batteryPack.php?id=1034&cost=230&whpm=400