Battery Care Tips
General Battery Information
Always treat your batteries with care.
Turn OFF the phone before removing the battery.
Avoid keeping the battery in the sun, as extremely high temperature reduces the capacity of the battery permanently.
When to Change the Battery
The nickel metal hydride (NiMH) battery that comes with your phone can be charged whenever you wish without losing performance. This is not the case with the cheaper nickel cadmium (NiCd) type batteries, often sold as accessories from other suppliers. For optimal talk & standby time in the long run, we recommend that you only use original batteries with your mobile phones.
To remind you that the battery will soon need to be charged or replaced with a charged one:-An alarm signal (a long beep) sounds & the message "Battery Low" appears for ten seconds in the display. The indicator light on top of the phone starts blinking red.
Battery Care & Maintenance
A battery has a long maintenance-free service life if properly treated.
Never let a battery get into contact with metal objects that may short-circuit the battery poles, for example a bunch of keys in a pocket.
A battery may explode if disposed of in a fire.
Do not disassemble a battery.
If you suspect a battery of not working properly, take it to an authorised dealer.
If left unused, a fully charged battery will discharge itself in a few months time.
When not in use, store your battery uncharged in a cool, dark & dry place.
Always use original battery & battery charger.
May I use any charger to charge my batteries?
No, because each charger employs a specific charging technology which is matched to a given electrochemical system, e.g. lithium-ion, lead-acid or nickel-metal-hydride. They differ not only in their voltage characteristics, but also in their charging mode, e.g. only quick chargers which have been specially developed for nickel-metal-hydride batteries will ensure optimal charging results for this system. Former Varta chargers for nickel-metal-hydride batteries can continue to be used, but may need more time to fully charge the battery.
Care must be taken when using a charger that does not meet the required charging conditions for a given electrochemical system, even if it carries a label that seems to signal "officially approved". A label of this kind may only state that the device was wired according to the European Electrochemical Standard (CENELEC) or other national standards such as VDE (in Germany: Association of German Electrotechnical Engineers)! This type of label does not make any reference to the charger's suitability for a specific battery system. With cheap devices of this kind, charging nickel-metal-hydride batteries can be both dangerous and lead to unsatisfactory results. This warning also applies to chargers developed for other systems (e.g. lead-acid accumulators).
Is it possible to overcharge secondary batteries?
No - not if a high-quality charger is employed. High-quality chargers have either a timer or thermo-sensor to ensure that the charging process is terminated as soon as the battery is fully charged. This eliminates any risk of overcharge. Chargers of unknown quality and with insufficient instructions may not meet these requirements. If used, the battery may overheat due to overcharging and may be damaged as a result.
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