That's the positive electrode, right? Are you talking about Jianping 18650? There are also flat heads. The application scenarios of pointed heads and flat heads are different. Flat heads are mainly connected by spot welding, which is convenient for connecting connecting parts. The pointed heads are essentially crimped into the slots and held in place. by the spring parts. They do not need to be soldered and are easy to replace, this connection has few requirements for discharge performance.
The letter v on the lithium battery refers to the unit of voltage (volt), and vf is a confusing mark with no clear meaning.
Usually, batteries have voltage (v) and capacity (mah), watt hours (wh), battery type (18560), these parameters, square and soft batteries and information about the size of the battery.
Usually in the form of sept digits, respectively length, etc., such as 60 (thickness) 65 (width) 110 (length), vf problem is not a common parameter identification, the guess may be the manufacturer's abbreviation.
Detailed information:
F model battery, electric moped, a new generation of power Battery products tend to replace maintenance-free lead acid batteries, which are typically used as battery cells (personal opinion: they are actually too big to use alone, haha). The standard F (flat head) battery has a height of 89.0 ± 0.5 mm and a diameter of 32.3 ± 0.2 mm.
The word (flat head) means that the positive electrode of the battery is flat, without protrusion. It uses battery cells used for spot welding batteries. Generally, the same model has a pointed (box) head. be used as a power supply by bsingle attery), which measures 0.5 mm more in height. And so on.
Also, many batteries often don't have the usual major models: "AAA, AA, A, SC, C, D, N, F". There are often "1/3" fractions in front. them, 2/3, 1/2, 2/3, 4/5, 5/4, 7/5". These fractions represent the corresponding height of the pool. For example, "2/3AA" means the height. is for ordinary AA batteries 2/3 of the rechargeable battery
Baidu Encyclopedia—Battery
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