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1. Can I use 1.2 V rechargeable batteries in devices that usually take 1.5 V throw away batteries?
 
  Using 1.2 V rechargeable batteries will have no effect on the use of your device. Indeed, an alkaline battery only benefits from 1.5 V voltage at the beginning of its discharge. Then, it drops constantly well below 1.2 V. Finally, it drops to around 0.6 V. Most equipment will work happily on anything between 0.9 V and 1.5 V. Unlike alkaline batteries where the voltage drops quickly, rechargeable batteries offer a more constant voltage. 
 
2. Why is it necessary to discharge Ni-Cd rechargeable batteries before recharging them?
 
  Ni-Cd batteries must be fully discharged every 5 to 10 charges to avoid memory effect. If the battery has not been entirely discharged, the charge will not be complete and will set a new lower energy capacity. This is called the 'memory effect'. 
 
3. Are Ni-MH rechargeable batteries affected by memory effect?
 
  The memory effect does not occur with Nickel-Metal Hydride batteries. They can then be recharged before being fully discharged. 
 
4. What are the main differences between Ni-Cd, Ni-MH and Li-Ion batteries?
 
  Ni-Cd rechargeable batteries are a mixture of Nickel and Cadmium. The cadmium represents +/- 15 of 20% of the battery weight. They are ideal for most types of domestic devices such as alarm-clocks, calculators, remote controls, torches... Ni-MH rechargeable batteries are a mixture of Nickel and Metal Hydride. They are 2 to 3 times more powerful than cadmium-based rechargeables and they have no memory effect. They are ideal for usage in digital devices, such as radio controlled toys, MP3 players, video game consoles, digital cameras... Li-Ion rechargeable batteries are a mixture of Lithium and Ion. They produce 40% to 50% more power than Ni-MH rechargeables with a similar capacity, and are considerably lighter. They are ideal for mobile phones and laptops, video cameras and digital cameras. 
 
5. How many times can Uniross Ni-MH rechargeables batteries can be recharged?
 
 Ni-Mh batteries can be recharged up to 1000 times* and can reduce the volume of waste batteries by 1000 times* and can help you saving money! However it is important to store them in good conditions to keep them longer. * depending on usage 
 
6. How must I store my rechargeable batteries?
 
 Rechargeable batteries should be stored in a cool and dry place. We recommend storing them in a battery case over long periods. Batteries that are not stored in adequate conditions can lose their charge rapidly. 
 
7. Are rechargeable batteries recyclable?
 
  Yes they are, like primary batteries. It is important to dispose of them in specially provided recycling containers. Batteries contain a number of heavy metals that will be recycled. In that way, these metals will not end up in the soil and the air. Rechargeable batteries can be recharged up to 1000 times and could reduce the volume of waste batteries by 1000 times. 
 
8. What does mAh mean?
 
 The capacity of a rechargeable battery is measured in mAh (milli-amp-hours). It is the quantity of power that it can store and can therefore supply back to the device. The higher the battery's capacity (mAh), the longer it will last before being completely discharged when in use in an electronic device. 
 
9. What does mA mean?
 
  The charging current is expressed in mA (milliamps). The time taken by the charger to recharge your batteries will depend on the mA : the higher the current, the faster the batteries can be charged. 
 
10. Do I need to recharge my batteries prior use?
 
  Rechargeable batteries are recharged during production in order to test them. A rechargeable battery will discharge between the end of the production and the moment it is in stores. That is why a rechargeable battery will have to be charged before use. 
 
11. Can I leave my batteries in the charger until I need to use them?
 
  When used with a rapid charger with automatic cut-off, Ni-MH batteries can be left in the charger for an extended period of time without any risk. However, do not store the batteries in the charger if it is not necessary. Always store charged batteries in a battery case and in a cool and dry place 
 
12. What do we call self-discharge?
 
  A rechargeable battery discharges slowly and progressively. The self discharge rate is about 1% of the battery's capacity per day at room temperature. The higher the temperature, the faster the discharge will be. 
 
13. What do we call trickle charge?
 
 Some chargers supply a trickle charge to the batteries, which is a continuous low rate to keep the batteries fully charged without overcharging them.