On April 8, 2024, the Lenovo Legion C series gallium nitride charger family ushered in a new product, C170 went on sale, the Legion C series has previously launched C135, C140, C140 (2024 model), the release of this C170 continues to maintain the advantages of small size and high performance, increases the maximum output power of the C series, and updates the device whitelist of Lenovo notebook private protocols.
The detailed model of the Legion C170 GaN charger is LA170, and the flat square appearance adopts two surface processes: matte + glossy, and the glossy area close to the pin is adjusted from the entire glossy surface of 140 to the striped glossy surface, and the power logo "170W" is exposed with matte matte, and the size of C170 is not significantly larger than that of C140.
In terms of performance, the Legion C170 GaN charger is configured with a single USB-C port, with a rated output power of 170W.
In addition to the charger, the Legion C170 GaN Charger also comes with a C-Slim power cable (USB-C to square port adapter cable), which is required to reach 170W output.
As an ultra-high-power USB-C charger, the Legion C170 GaN charger supports three output levels, up to 100W USB PD (20V5A) output with a universal USB-C to USB-C cable, up to 140W (20V7A) with the original special USB-C to USB-C private protocol cable, and up to 140W (20V7A) Lenovo private protocol output with the original special USB-C to USB-C private protocol cable, and up to maximum support with the C-Slim power cable that comes standard with the Legion C170 GaN charger 170W (20V8.5A) Lenovo private protocol output.
The dimensions of the Legion C170 GaN charger are 71*71*31mm, and the volume is about 156.27cm³, which is close to the size of a high-power mobile phone charger. Based on the rated output power of 170W, the power density reaches 1.08W/cm³, which is close to that of the C140, both exceeding 1 watt per cubic centimeter.
输入为两脚固定插脚，支持宽幅电压，对应两档输出性能。 200-240V 输入电压时至高输出功率为 170W,电压档支持 5V3A / 9V3A / 12V3A / 15V3A / 20V7A / 20V8.5A;100-127V 输入电压时至高输出功率为 135W,电压档支持 5V3A / 9V3A / 12V3A / 15V3A / 20V6.75A。
As we all know, the original power adapter of high-performance notebooks is not only huge, but also very amazing, Lenovo's original 230W and 300W "big brick" power adapters weigh 690g and 1100g respectively, and the Legion C170 GaN charger is greatly reduced in size, weighing as little as 245g, greatly reducing the burden of business travel.
For the experience of using the notebook, Lenovo provides a number of data as a reference, the test model is configured as Y7000P i7 14650HX + 4060, which is compared with the use of 230W original power adapter, C140 with C to C cable, and C170 with C to Slim cable.
CineBench R23 score, original power adapter score 22095, C170 score 21254, C140 score 17362. Shadow of the Tomb Raider: Shadow runs the average frame, the original power adapter and the C170 both score 98, and the C140 can't turn on Beast Mode, and the score can't be compared. In terms of charging, the 30-minute charging speed compares, the C140 charges 42%, and the C170 charges 84%.
It can be seen that the performance of the C170 is comparable to that of the original power adapter, and the charging speed is 100% faster than that of the C140.
Lenovo notebook private protocol fast charging uses a whitelist for handshake pairing, and the internal firmware of the charger records the whitelist of the cable and the notebook machine code, and some notebook BIOS needs to be upgraded before it can be supported by the whitelist.
The Legion C170 GaN charger with the original C to Slim power cable (8.5A) can provide up to 170W of power for the following notebooks: Legion 2024, 2023, 2022, GeekPro 2024, 2023, YOGA Pro 16s Extreme, Xiaoxin Pro 16 Discrete Graphics Version. As for the specific GPU and CPU power allocation, different models have different allocation strategies, you can see if there is any user feedback of your own model in the comment area.
At the end of the article, we put the parameter comparison of the Legion C series GaN chargers.
Summary of the charging head network
The Legion C170 GaN Charger is a compact and portable high-power laptop power adapter, which is close to the size of the common 100-watt USB PD charger, which can provide laptops with a performance release effect comparable to that of the original power adapter and faster charging speed, improving the pain points of users who travel with high-performance laptops to become "martial arts practitioners".
As a series of products, the power density of the 1.08W/cm³ GaN charger of the Legion C170 is close to that of the C140, and the C to square port private protocol is increased to 170W (20V8.5A), and the C to C private protocol remains unchanged at 140W. For other devices, it supports 20V5A 100W PD3.0 universal fast charging, retaining the support of 5A PPS, but removing the PD3.1 of the C140.
The Rescuer C170 GaN charger is packaged with a C to Slim power cord, which supports a variety of Lenovo 2024 series notebooks, and is currently on the shelves of Lenovo's JD.com self-operated flagship store, priced at 299 yuan, and interested partners can get on the car by themselves.