3W Solar Charger for Trail Cameras

The WILLFINE SP100 Pro eliminates battery swap trips. Its 3W solar panel continuously charges a 2500mAh 18650 Li-ion battery, delivering stable DC 12V output to connected trail cameras. USB Type-C 5V input provides a backup charging path on cloudy days. Full overcharge, over-discharge, overcurrent, overvoltage, and short-circuit protection runs silently in the background. IP66 rated; operates from -20°C to 55°C.

Compact Off-Grid Power for Single-Camera Deployments

The SP100 Pro is engineered as the entry-tier solar power companion for trail cameras and outdoor security cameras. Its 142 x 160mm compact form factor weighs almost nothing in your pack, yet the 3W panel + 2500mAh internal battery is enough to keep a single 4G trail camera continuously online — even in mid-season when you'd otherwise need to climb a hill to swap AA batteries. For users running just one camera at a remote location, SP100 Pro is the simplest "set it and forget it" power solution available.

Core parameters of the product

Core parameters of the product 2500mAh Lithium Battery
Core parameters of the product 3W(±5%) Solar Charger Power
Core parameters of the product 7.4V Voltages
Core parameters of the product IP66 Dustproof and Waterproof

Battery: 2×18650 Li-ion, 2500mAh total

Storage: N/A Waterproof: IP66

Core strengths

3W Solar Panel — Continuous Off-Grid Power, No More Battery Swaps

3W Solar Panel — Continuous Off-Grid Power, No More Battery Swaps

The 3W solar panel charges the built-in 2500mAh lithium battery during the day; the battery powers the camera through nights and cloudy stretches — a complete off-grid power loop.
DC 12V Output — Plug-and-Play with the Full WILLFINE Camera Lineup

DC 12V Output — Plug-and-Play with the Full WILLFINE Camera Lineup

Standard DC 12V output works plug-and-play with WILLFINE G100 and compatible trail cameras — no adapters, no extra accessories, just one cable.
Five-Circuit Protection — Overcharge, Over-Discharge, Overcurrent, Overvoltage, Short Circuit

Five-Circuit Protection — Overcharge, Over-Discharge, Overcurrent, Overvoltage, Short Circuit

Built-in circuit protection guards both the internal battery and downstream camera: prevents overcharge damage, avoids deep-discharge wear, blocks overcurrent and overvoltage events — long-term outdoor operation with peace of mind.
USB Type-C 5V Input — Backup Top-Up for Cloudy Stretches

USB Type-C 5V Input — Backup Top-Up for Cloudy Stretches

A power bank can top up the SP100 Pro through the Type-C port during extended overcast weather, so the power chain never breaks because of the weather.
Core strength

Product Specifications

1Effective Pixels
2560×1920;4:3
Day/Night Mode
Yes2
IR Setting
59pcs; 940nm-IR LED
Operating Keys
7
Lens
DFOV=60°;F=2.0 / DFOV=100°;F=2.4 // Auto IR-Cut-Remove (at night)
LCD Screen
2.0”TFT, RGB
PIR Angle
Maximum support of 20m
PIR Distance
20m
Picture Size
Image Size: 8MP/12MP/24MP /32MP(3264×2448/4032×3024/5440×4080)
Shooting Numbers
1P-5P
Picture Format
.jpg
Video Resolution
HD (1280×720);FHD (1920×1080)
Video Format
.mov
Trigger Time
0.2s-0.4s
Trigger Interval
4s-7s
Camera + Video
Yes
Time Lapse
Yes
GPS
Yes
Memory
SD Card (8GB – 32GB)
SD Card Cycle
ON/OFF

Beyond Manufacturing, We Deliver Value

Willfine delivers full-stack capability — from hardware and Edge AI to connectivity, cloud, and applications — enabling partners to launch intelligent, efficient, and reliable outdoor imaging products and services.

Four Core Values

Full-Stack R&D and In-House Design From hardware and mechanical design to firmware, AI algorithms, and cloud platforms, everything is developed in-house for greater product consistency and faster iteration.

Edge-to-Cloud Integration — We provide integrated solutions from front-end devices to backend platforms, reducing development complexity and integration costs.

Field-Proven Reliability— fOur products are extensively tested in demanding outdoor conditions to ensure long-term stability, durability, and reliability.

Fast Customization & Scalable Delivery — We support deep ODM/OEM customization with fast response times and scalable manufacturing capabilities.

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AI Native Outdoor Imaging

We are not simply adding AI to traditional outdoor devices. We are redefining outdoor imaging products from the ground up with AI at the core.



Willfine specialize in building intelligent outdoor imaging systems designed for real-world environments, combining AI technology, edge computing, and global connectivity to deliver reliable, efficient, and scalable solutions for hunting, wildlife observation, nature monitoring, and outdoor security.

Built for the real world. Designed for the outdoors.

Unlike AI products designed mainly for lab conditions, our systems are engineered from day one for demanding outdoor environments. From freezing mountains to humid forests, from ultra-long standby performance to remote data transmission, every detail is validated in real-world field conditions.

Edge AI + Cloud AI Integrated Architecture

Our systems combine Edge AI and Cloud AI into a unified architecture, enabling real-time on-device intelligence together with powerful cloud-based analysis.

AI at the Edge — The device itself can perform multiple intelligent recognition and analysis tasks, including:Object Detection、Image Recognition、Behavior Analysis、Low-Power, High-Efficiency AI Processing. Edge computing significantly reduces false triggers, minimizes unnecessary data transmission, and improves battery efficiency.

AI in the Cloud— The cloud platform further enables:AI Model Training & Optimization、Data Management & Insights、Visualization & Real-Time Alerts. The collaboration between edge devices and cloud services helps customers rapidly build a complete AI-powered outdoor imaging ecosystem.1

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FAQ

Yes, we are a professional manufacturer with an in-house R&D team. We support OEM services including logo printing on the camera housing, packaging box and user manual. We also provide ODM services covering firmware & App customization and new mold development.

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