The charging time and life of an electric bike battery depends on several factors such as the type of battery, capacity, usage, terrain, and weather. Generally, the charging time ranges from 3 to 6 hours, and the charge lasts for 20 to 70 miles, depending on the aforementioned factors. It is advised to charge the bike when the battery reaches 20% to prevent over-discharging, which can significantly reduce the battery life.

The distance a 250W electric bike can go depends on various factors, such as battery capacity, terrain, weight, weather conditions, pedal input, and speed. On average, with a fully charged battery, a 250W electric bike can travel anywhere between 20 to 50 miles on a single charge at a moderate speed of 15 to 20 mph, depending on the aforementioned factors. Heavier riders, hilly terrain, strong headwinds, and excessive use of throttle without pedaling can reduce the range.

To revive an electric bike battery, the first step is to fully discharge it by using the bike until it no longer turns on. Then, connect the battery to a charger and let it charge fully. If the battery still doesn’t hold a charge, try using a desulfating charger or a low amperage charge over a longer period of time. If none of these methods work, it may be time to replace the battery.