Lithium-ion batteries are divided into liquid lithium-ion batteries and polymer lithium-ion batteries. The electrolyte of a lithium-ion battery is flowing, so it is more unstable than a lithium polymer battery, and it may cause the battery to explode when hit by an external force, or if a charger that does not meet the standard is used. Many portable electronic products such as mobile phones and laptops use lithium batteries. That is, many people have a "bomb" around them. For the sake of safety, you must pay attention to the following points when purchasing.
First, there is no clear capacity marked. Batteries without a clearly marked capacity (such as 1000mAh or 1000 mAmpere) are likely to use inferior or recycled batteries. Many cheap batteries flooded the market are made using recycled battery hearts, although the price is cheap, but the life is short, the quality is unstable, and the use of carelessness may damage the mobile phone.
Second, there is no guaranteed standby time. Standby time is the continuous use time from the time the battery is loaded into the phone to the next charge. The batteries sold on the market in general can not guarantee standby time for customers, this is because of the unstable relationship of battery quality, many cheap batteries are used because of the use of poor quality battery hearts, so the standby time is very short.
Third, whether to install a safety protection circuit board. Without a protected circuit board, the lithium battery has the risk of deformation, leakage and explosion. Under the vicious price reduction competition, each company sought a lower price to protect the circuit board, or omitted the device at all, making the market full of lithium batteries with explosion hazards. Consumers can't tell from the look if there's a protective board, so it's best to buy from a reputable business.