A. Classification and characteristics of chargeable batteries
.Lead acid storage battery. This kind of batteries has monomer high voltage (2 V) that is mainly used for the start of vehicles and motorbikes, and for lighting that need large power.
2.Non-maintain improved airtight lead acid storage battery. This kind of batteries does not need to replenish solution. (Aluminum acid storage battery will not be introduced)
3.Chargeable nickel cadmium battery. This kind of batteries has a monomer voltage of 1.2-1.5v13-may-08 8:56 replace some of the ordinary batteries.
4.Chargeable nickel hydrogen battery. This kind of batteries has a monomer voltage of 1.2-1.5v. Its capacity is 30-60 percents bigger than nickel cadmium battery. It is environmental protective and of no memory effect.
5.Chargeable lithium ion battery. This kind of battery has a monomer voltage of 3.6v. It cannot replace ordinary batteries. It is mainly used to assemble portable batteries. It has a large capacity, light weight and no memory effect. This kind is the most advanced chargeable battery at present.

B. Which electronic equipments can use chargeable batteries?
Despite of some electronic equipment, which has a regulation, that 13-May-2008 8:56f the other electronic equipments with large power consumption can use chargeable batteries.

C. How to choose and buy chargeable batteries?
1.Choose nickel cadmium battery and nickel hydrogen battery of different capacities, according to the users??￥ own habits and the power consumption of the machine.
2.Buy famous brand products (for example, ???Yongbao??à) in the shops of good reputation.
3.Take care to judge whether the batteries are real.

D. How to use chargeable batteries?
1.Full the batteries with the charger first, after buying the batteries.
2.Bad charging and discharging habits will decrease the service life of batteries.
3.Bad charging and discharging habits
4.will make nickel cadmium batteries have memory effect and cannot work.
5.Serious over discharging may decrease the capacity and the service life.

E. How to prolong the service life of the batteries?
1.Choose to buy the chargeable batteries of high qualities.
2.Choose the qualified chargers. The ones with quick charge ability should also have the function to avoid over charging. Chargeable batteries must discharge in a low speed.
3.Decrease the charging times. Make sure the batteries are full after charging every time.
4.The capacities of batteries must be the same. New and old ones cannot be used together.
5.Avoid over discharging and discharging in a big electric current. Short circuit and non-electricity storing are forbidden.

F. How to discover whether the batteries have problems?
1.The batteries cannot work after charging for a long time.
2.The batteries heat badly while charging.
3.The batteries become out of shape or change color after charging. The positive electrode alkalized or get rusty.

J. What is the nickel cadmium batteries??￥ memory effect?
The memory effect occurs because the electricity in the batteries is not used up and the batteries are charged again, that makes the unused electricity become inactive. Batteries that have a deep memory effect will be very small in capacity. They need activation, or they will be scrapped.

I. How to prevent and remove memory effect?
Electricity in the batteries should be used up every time (used in the electronic equipment). If the capacity appears to decrease, it is better to discharge the batteries with low power consumption equipment or special- purpose dischargers (discharge for several times), then full the batteries slowly. Discharge and charge the batteries in this way for several times, the memory effect may be removed.

J. Why the chargeable battery I've just bought cannot work?
New-bought chargeable batteries have been stored for a long time that some of them are in dormancy. You can Discharge and charge the batteries in for several times (according to the method to remove the memory effect) to wake up the batteries??￥ capacity and make it work well.

K. Why the capacity decreases after the batteries having been laid aside for a period of time?
It is normal for the capacity decreases after the batteries having been laid aside for a period of time. The capacity may decrease 1-3 percents every day. The chargeable batteries should be used immediately after charging. Or you after wake up the batteries after long time of laying aside.

R. Is it normal that the chargeable batteries heat while charging?
The chargeable batteries may heat a bit when they are charged. When there is a serious heating, the charging should be stopped, or the batteries will be destroyed.