49Warnings and precautionsand/or damage. Do not pierce, open or disassemble the battery. If the battery leaks and youcome into contact with the leaked fluids, rinse thoroughly with water and seek medicalattention immediately. For safety reasons, and to prolong the lifetime of the battery, chargingwill not occur at low (below 0C/32F) or high (over 40C/104F) temperatures.The full performance of a new battery is achieved only after two or three complete charge anddischarge cycles. The battery can be charged and discharged hundreds of times, but it willeventually wear out. When the talk and standby times are noticeably shorter than normal, buya new battery. Use only Acer approved batteries, and recharge your battery only with Acerapproved chargers designated for this device.Unplug the charger from the electrical plug and the device when not in use. Do not leave afully charged battery connected to the ac charger, since overcharging may shorten its lifetime.If left unused, a fully charged battery will lose its charge over time. If the battery is completelydischarged, it may take a few minutes before the charging indicator appears on the display orbefore any calls can be made.Use the battery only for its intended purpose. Never use any charger or battery that isdamaged.Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic objectsuch as a coin, clip, or pen causes direct connection of the positive (+) and negative (-)terminals of the battery. (These look like metal strips on the battery.) This might happen, forexample, when you carry a spare battery in your pocket or purse. Short-circuiting theterminals may damage the battery or the connecting object.Leaving the battery in hot or cold places, such as in a closed car in summer or winterconditions, will reduce the capacity and lifetime of the battery. Always try to keep the batterybetween 15C and 25C (59F and 77F). A device with a hot or cold battery may not worktemporarily, even when the battery is fully charged. Battery performance is particularly limitedin temperatures well below freezing.Do not dispose of batteries in a fire as they may explode. Batteries may also explode ifdamaged. Dispose of batteries according to local regulations. Please recycle when possible.Do not dispose as household waste.Replacing the battery packYour smartphone uses lithium batteries. Replace the battery with the same type as that whichcame bundled with your product. Use of another battery may present a risk of fire orexplosion.Warning! Batteries may explode if not handled properly. Do not disassemble ordispose of them in fire. Keep them away from children. Follow local regulationswhen disposing of used batteries.Additional safety informationYour device and its enhancements may contain small parts. Keep them out of the reach ofsmall children.Operating environmentWarning! For safety reasons, turn off all wireless or radio transmitting devices whenusing your smartphone device under the following conditions. These devices mayinclude, but are not limited to: wireless LAN (WLAN), Bluetooth and/or 3G.