ZGRL-80 LED Light/Portable COB Spotlight: Detailed Teardown Analysis and Circuit Design Review. Let’s Disassemble a Spotlight Suspected of False Power Specifications.
Teardown video: https://www.bilibili.com/video/BV1BR3bztE32/
False Power Specifications
Purchased on 2024.12.16 from Biyos Digital Store on Tmall for ¥188, the ZGRL-80 spotlight claims to have 80W power output, supports 65W PD fast charging (actual test shows false specs), and contains a 10,000mAh battery.
After complaining to Taobao customer service, they only compensated with a ¥100 coupon. The seller faced no penalties and the product remains on sale, with the only change being removal of the “supports 65W PD fast charging” claim.
Electronic/MCU Technical Discussion QQ Group: 2169025065
- Open-source synchronous rectification Buck-Boost digital power supply based on STM32: https://blog.zeruns.com/archives/791.html
- Open-source Type-C docking station with 4×10Gbps USB-A ports + 2.5G NIC + card reader: https://blog.zeruns.com/archives/868.html
- Open-source 140W+65W Buck-Boost PD3.1 fast charging module (2C+1A ports), IP6557+IP6538, 205W desktop charger: https://blog.zeruns.com/archives/801.html
False Power Specifications
At purchase time (2024.12.16), the product page claimed supports 65W (PD protocol) Type-C fast charging power supply. However, when writing this article (2025.7.1), I noticed the product page had changed to Type-C power supply – is this an indirect admission of false advertising? (Transaction snapshot proves this wasn’t edited by me)
The product page image shows 80W high power, but the technical parameters list 60W – conflicting claims.
Manufacturer listed as: Shenzhen Meimei Electronics Technology Co., Ltd.
Testing with a 65W PD fast charger shows actual charging power below 5V2A, even with lights on (teardown confirms no fast charging support).
My other spotlight (also claimed 65W PD support) actually works – it triggers PD protocol at 20V. Since this is a 40W light with full battery, the power display shows 40.9W.
Supplying 20V through ZGRL-80’s DC port gives 16.7W charging power. With lights at 100% brightness and mid color temperature, combined power consumption reaches 62.3W – meaning the actual light power is only ~40W. Another false specification.
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