If im right Nathan from XS-Power batts says, that the batts in hybridcars are lithiumbatts, lithiumbatts are not this good to power a system. If it would be good, im sure, that we would have some SMD-Members with a Priusbatt in his system. Like Trippi, im sure he would be fine with 50 K or 60 K wattpower out of 2 Priusbatts. if it would work.
PS. ask Nathan after the weekend