When should I charge my phone?

When should I charge my phone? The golden rule is to keep your battery charged somewhere between 30% and 90% most of the time. Therefore, top up the charge when it drops below 50%, but disconnect the charger before it reaches 100%. For this reason, you may want to reconsider leaving your phone connected to the charger all night. Fully recharging your phone is not fatal for a phone battery, but full recharging every time charging will reduce the battery life. Similarly, avoid lowering your phone's battery by less than 20%.