Motorcycle bad ground on battery or more serious issue?

So i bought this bike (94 honda magna) last year and ran great until now. Its my only vehicle at the momebt as my truck im in process of replacing trannsmission.so i hadda jump bike battery today,first time ever, and i noticed the terminal litterally broken in half and cable is hanging on by a sliver.terminal is built in battery so can really fix unless i solder or something but seem dangerous.decide to ride down to store to get new battery,scince this one real anyway.so i pop start bike and on my way. I was driving the 14 miles and while driving bike just shuts off while moving. I start it again and continue on my way. I stop on way to fill up gas,turn bike off and fill up. Just about to leave when battery dead again. Try pop starting,it starts but NOOO power. I floor gas and only getting 2000 rpm, its backfiring and sounds like **** then dies. Try pop starting over and over but no luck. They are brand new spark plugs, good gas, also i noticed while driving (may of been car in front of me idk) a rotten egg smell. But could bad ground on battery cause all this? I get hard to start but why extreme loss of power?hopefully new battery tommorow will help and save me hassle of dealing with tow. Thanks for help

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