1,the principle of fast charging
Fast charging increases the charging power(W=V×A)and shortens the charging time by increasing the voltage(V)or current(A).For example:
5V/2A(10W):Ordinary charging
9V/2A(18W):Early charging
20V/5A(100W):Ultra-fast charging(than laptop charging)
2,common fast charging protocols
different brands use different protocols,need to match the phone and charger protocols to trigger fast charging:
USB PD:universal standard(iphone,Android flagship stores are supported)
QC(Qualcomm fast charging):Snapdragon phones commonly used(such as QC4.0)
VOOC/SuperVOOC:OPPO Exclusive(low-voltage high-current)
SuperCharge:Huawei Exclusive
MagSafe:Apple magnetic wireless fast charging(15W)
3,the impact of fast charging on the battery
Normal use has a tiny impact:modern cell phones have intelligent charge management chips.
Heat is the biggest enemy:long-term high temperature may accelerate battery aging.
Suggestion:Avoid playing large games while fast charging,or use heat dissipation back clip.
4,How to choose a fast charger?
Look at the power:the highest power supported by the cell phone(e.g.iPhone14 up to 27W).
Look at the protocol:prioritize the support of USB PD + PPS compatibility is broader.
Look at the certification:recognize MFI(Apple),CE/FCC(safety certification).
GaN material:small size,high efficiency,suitable for traveling and carrying.
5,notes
Data line is important:fast charging requires supporting cable(such as USB-C to C support 100W).
Miscellaneous chargers should be used with caution:poor quality products may damage the battery or cause safety hazards.
No need to fill it up every time:Li-ion batteries are healthier with 30%-80% charge.
Choose a good fast charger,as long as you choose the right protocol and power,recognize the regular brand,fast charging is both efficient and safe.