Battery lasts at least 4 hours (when new). The battery life will shorten over time, best case scenario it will last you a couple years. The instructions say it takes 18 hours to charge, but there is no light indicator, so the only way to know if's full is to check with a battery tester or multimeter. Do not overcharge the battery (i.e., don't leave it plugged in for days at a time) - this AC adapter/charger is not a trickle charger and could fry your battery to overcharge.
Updated to look just like the latest Jeep Wrangler, with distinctive grille, roll bars, and rugged front & back fenders, this Power Wheels vehicle will take little ones and their imaginations for a fun, exciting ride every time. Hard surfaces, wet grass and rough terrain are no match for the Jeep Wrangler’s two speeds (2.5 mph and 5 mph) and wide tread tires. And with its larger cockpit area, there’s more room for the driver and even a friend to come along for the ride! (Maximum 130 lbs.)