I have a 48 volt 450 watt bike and I am trying to replace controller with a 1000 watt 48 volt controller. I have a 10000mw 48 volt battery. When I connected controller only (no motor, accessories) it will blow a 20 amp blade fuse. (20 amp 12 volt). Do I need to get a 48 volt slo blow fuse like in golf carts? I bought two controllers and they each blow fuses. I can not find any mention of fuse values. Thanks!