Acer E100/E101 Smartphone User Guide76may take a few minutes before the charging indicator appearson the display or before any calls can be made.Use the battery only for its intended purpose. Never use anycharger or battery that is damaged.Do not short-circuit the battery. Accidental short-circuiting canoccur when a metallic object such as a coin, clip, or pen causesdirect connection of the positive (+) and negative (-) terminalsof the battery. (These look like metal strips on the battery.)This might happen, for example, when you carry a spare bat-tery in your pocket or purse. Short-circuiting the terminals maydamage the battery or the connecting object.Leaving the battery in hot or cold places, such as in a closed carin summer or winter conditions, will reduce the capacity andlifetime of the battery. Always try to keep the battery between15 °C and 25 °C (59 °F and 77 °F). A device with a hot or coldbattery may not work temporarily, even when the battery isfully charged. Battery performance is particularly limited intemperatures well below freezing.Do not dispose of batteries in a fire as they may explode. Bat-teries may also explode if damaged. Dispose of batteriesaccording to local regulations. Please recycle when possible.Do not dispose as household waste.Replacing the battery packYour smartphone uses lithium batteries. Replace the batterywith the same type as that which came bundled with yourproduct. Use of another battery may present a risk of fire orexplosion.Warning! Batteries may explode if not handled properly. Do notdisassemble or dispose of them in fire. Keep them away from chil-dren. Follow local regulations when disposing of used batteries.