N o k i a B a t t e r y A u t h e n t i c a t i o n G u i d e l i n e sBattery and Charger Information 46Section 15: Battery and Charger InformationYour device is powered by a rechargeable battery. The battery intended for use with this device is BL-4C. Nokia may make additionalbattery models available for this device. This device is intended for use when supplied with power from the following chargers: AC-6Uand AC-10U. The exact charger model number may vary depending on the type of plug. The plug variant is identified by one of thefollowing: E, EB, X, AR, U, A, C or UB.The battery can be charged and discharged hundreds of times, but it will eventually wear out. When the talk and standby times arenoticeably shorter than normal, replace the battery. Use only Nokia approved batteries, and recharge your battery only with Nokiaapproved chargers designated for this device. Use of an unapproved battery or charger may present a risk of fire, explosion, leakage, orother hazard.If a battery is being used for the first time or if the battery has not been used for a prolonged period, it may be necessary to connectthe charger, then disconnect and reconnect it to begin charging the battery. If the battery is completely discharged, it may takeseveral minutes before the charging indicator appears on the display or before any calls can be made.Always switch the device off and disconnect the charger before removing the battery.Unplug the charger from the electrical plug and the device when not in use. Do not leave a fully charged battery connected to acharger, since overcharging may shorten its lifetime. If left unused, a fully charged battery will lose its charge over time.Always try to keep the battery between 15°C and 25°C (59°F and 77°F). Extreme temperatures reduce the capacity and lifetime of thebattery. A device with a hot or cold battery may not work temporarily. Battery performance is particularly limited in temperatures wellbelow freezing.Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic object such as a coin, clip, or pen causes directconnection of the positive (+) and negative (-) terminals of the battery. (These look like metal strips on the battery.) This mighthappen, for example, when you carry a spare battery in your pocket or purse. Short-circuiting the terminals may damage the battery orthe connecting object.Do not dispose of batteries in a fire as they may explode. Batteries may also explode if damaged. Dispose of batteries according tolocal regulations. Please recycle when possible. Do not dispose as household waste.Do not dismantle, cut, open, crush, bend, deform, puncture, or shred cells or batteries. In the event of a battery leak, do not allow theliquid to come in contact with the skin or eyes. In the event of such a leak, flush your skin or eyes immediately with water, or seekmedical help.Do not modify, remanufacture, attempt to insert foreign objects into the battery, or immerse or expose it to water or other liquids.Improper battery use may result in a fire, explosion, or other hazard. If the device or battery is dropped, especially on a hard surface,and you believe the battery has been damaged, take it to a service center for inspection before continuing to use it.Use the battery only for its intended purpose. Never use any charger or battery that is damaged. Keep your battery out of the reach ofsmall children.Nokia Battery Authentication GuidelinesAlways use original Nokia batteries for your safety. To check that you are getting an original Nokia battery, purchase it from a Nokiaauthorized service center or dealer, and inspect the hologram label using the following steps:Authenticate hologram1. When you look at the hologram on the label, you should see the Nokia connecting hands symbol fromone angle and the Nokia Original Enhancements logo when looking from another angle.2. When you angle the hologram left, right, down and up, you should see 1, 2, 3 and 4 dots on each siderespectively.Successful completion of the steps is not a total assurance of the authenticity of the battery. If you haveany reason to believe that your battery is not an authentic, original Nokia battery, you should refrain fromusing it, and take it to the nearest Nokia authorized service center or dealer for assistance. If authenticitycannot be verified, return the battery to the place of purchase.