Fast Charging - Know Your Tech

I can remember those days when Simoco, an India-grown company brought some large note like phones during those symbian days against loud, large chinese resistive touchscreen phones . The package comes with an extra battery and a charger to charge it outside the phone. Gone those days, Li-Ion or Li-Polymer batteries have been evolved a lot now. The battery technology has improved a lot - from wireless charging to fast charging technology make our digital lives easier.

Fast charging has became a USP for smartphone makers, just like how powerful battery included or camera capabilities or bigger screen or latest chipset. The companies simply promotes how fast the smartphones get charged in minutes or simply says xx Watt charging capacity. 

Typical charging power is 10 W (5V x 2A) on microUSB or 15 W on USB-C . More than that is 'fast charge' or 'rapid charge' tech - companies use different names for their own rapid charge technology. 

BBK Electronics - has its own proprietary rapid charging system which is called VOOC (Voltage Open Loop Multi-step Constant-Current Charging) charging on Oppo phones, WARP charging on OnePlus phones, DART charging on RealMe phones, FlashCharge on Vivo/iQoo phones. 

VOOC's updated version is called SuperVOOC (50/67/80/120/150/160/ 200/240 Watt). Realme put 150W charging capacity on Realme GT NEO 3, and may use 240W charging capacity on Realme GT Neo 5. IQOO 10 pro too supports 200W charging capacity. To achieve this feat they will use GaN (Gallium nitride) head in the charger. 

Huawei's SuperCharge is similar to VOOC. 

Honor 200 Pro has 5200 mAh Silicone polymer (Si-Po) battery (Si/C or Silicone Carbide) which supports upto 20V/5A (= 100W ) SuperCharge, compatible with 11V/6A, 10V/4A.

The other companies follow the rule of Qualcomm QuickCharge tech (now evolved to QC 5.0). The basic difference is VOOC increases the amperage (A) of the charger, while Quick Charge increases the voltage (V).

MediaTek, another chipset maker like Qualcomm has its own proprietary charging protocol called Pump Express (later PE+ and PE+ 2.0).  Apple has its own Lightning charging protocol.

Samsung's Adaptive Fast Charging (later Super Fast Charging), Motorola's TurboCharging, Asus' BoostMaster support Qualcomm's QC. 

Mi/Xiaomi/Redmi/POCO has FastCharge (22.5W), SonicCharge (27, 33, 67 W) and HyperCharge (120W*) - these are compatible with Qualcomm QC. 

*[ 5V 3A/9V 3A/11V 6A/17V 6A/20V 6A ]

ZTE devices, AXON phones support QC. 

My experience with Mi and OnePlus chargers and cables: 

Mi charger + Mi cable/OnePlus cable gives fast charge to mi phones 

OP charger + OP cable gives fast charge to OP phones. (Mi cable does not help)

In real time 33W is more than enough.