In our daily life, we can see that mobile phones, tablet computers or other digital brand products in our hands are charging at the same time. People are used to this usage in their daily life. But it's not right to use mobile phone power bank in this way, because when charging while working, the power is constantly changing with the use of digital products. For example, when you make a phone call, you are charging, because the mobile phone receives and transmits signals by electricity. Especially when you are charging while you are in a conversation, the current will charge the mobile phone through the data line, because the power consumption of the mobile phone is relatively large when it is in the load, which may cause the back of the mobile phone to heat up for a long time. If it's serious, it may burn down the mobile phone or explode. It's not a legend at all. It's something that really happens in daily life. You can search the Internet according to the relevant problems. Aluminum shell of mobile power supply

For users of rechargeable Ni MH batteries and lithium batteries. The charging of the battery is very particular. The newly bought battery usually has low or no power, so it must be fully charged for the first time. The charging time of lithium battery is generally more than 8 hours, while that of Ni MH battery is generally more than 16 hours. In order to achieve the best effect, that is to make the battery reach its maximum power, it is generally necessary to repeatedly charge and discharge for more than 3 times. After using the battery for three times, it's better to find an opportunity to fully discharge the battery before charging. Try not to charge the battery repeatedly when there is residual power, otherwise the battery life will be shortened. After the battery is charged, it is generally hot. It is better to install the camera after the battery is cooled.

But note that lithium batteries do not have memory effect, so do not discharge, otherwise it will only damage the battery structure, loss of battery life. In addition, in order to avoid the loss of power, users of Ni MH batteries should not let the positive and negative poles of the battery touch the conductor at the same time after charging and removing the battery, for example, do not touch both ends of the battery with fingers at the same time. Users who use lithium batteries should try to keep the positive and negative contact points of the batteries in the camera battery box clean. If necessary, they can use a dry cloth to gently wipe and then load the batteries.

It should also be noted that even if users use lithium batteries, when they do not use digital cameras for a long time, they should discharge them completely, take out the batteries and store them in a dry and cool environment. In addition, it should be noted that users who use Ni MH batteries or lithium batteries should not put the charged batteries in leather bags, pockets, handbags or containers containing metal articles to prevent short circuit.