noob, what should i know?......vpower 48v 500w. 48v 10ah lifepo4 vpower battery

does anybody know what motor this is, or how to identify it? is the stock charger and bms crap? I purchased on ebay a month or so back. any info would be appreciated. any upgrades to get better efficiency, not really lookin to go faster, it does about 27 mph top speed. i can post some pics if it helps.