BOLTRISE 12-Inch Cordless Brushless Chainsaw — 2×21V 4000mAh Batteries, Auto-Oiler & Safety Lock

The BOLTRISE 12-inch cordless brushless mini chainsaw is a lightweight, battery-powered saw designed for fast, one-handed trimming, pruning, and small wood cutting with an auto-oiler and safety lock.

Compact but powerful, this portable chainsaw combines a brushless 1100W motor, a hardened manganese steel chain, and two quick-charging 21V 4000mAh batteries to deliver efficient cuts at up to 32.81 ft/s. It’s built for homeowners, gardeners, campers, and anyone needing a convenient saw without a cord or the weight of a full-sized chainsaw. The tool-free tensioning knob, non-slip handle, and multiple safety features make it simple to operate and maintain.

How quickly and smoothly will it cut through branches?

The brushless motor produces consistent high-speed torque so the 12-inch bar and hardened chain slice through wood rapidly—small logs and branches can be cut in seconds. Reduced friction and an auto-oiler keep the chain running smoothly and extend component life.

• 1100W brushless motor for steady power and less heat buildup
• Chain speed up to 32.81 ft/s for fast cutting
• Hardened manganese steel chain for cleaner, durable cuts
• Auto-oiler maintains lubrication during continuous use

What safety features protect the operator?

Safety is addressed through a multi-layer system that prevents accidental starts and reduces kickback risk. A widened guard and extended flap deflect debris while the dual-button start prevents operation unless intentionally activated.

• Two-step start (safety lock plus power button) to avoid accidental activation
• Anti-kickback design for safer cutting control
• Widened hand guard and safety flap to block flying wood chips
• Overload and temperature protection for battery and motor safety

How long will the batteries run and how fast do they recharge?

The saw includes two 21V 4000mAh batteries that swap quickly for extended runtime. Expect substantial continuous cutting time and a short recharge period so you can return to work with minimal interruption.

• Includes 2×21V 4000mAh batteries for extended runtime—up to around 180 minutes combined under typical conditions
• Fast charging capability — both batteries recharge fully in about 1.5 hours
• Onboard power display shows remaining battery level in real time
• Built-in protection prevents overheat and overcurrent damage

How easy is maintenance and chain adjustment?

Routine upkeep is straightforward: the tool-free adjustment knob lets you tension the chain without extra tools, and the auto-oiler reduces the need for frequent manual lubrication. The durable chain and fewer moving parts lower long-term maintenance demands.

• Tool-free chain tensioning knob for quick adjustments
• Auto-oiler continually lubricates the chain during operation
• Brushless motor minimizes wear and extends service life
• Removable components are accessible for cleaning and inspection

Who is this for: The BOLTRISE 12" cordless mini chainsaw is aimed at homeowners, gardeners, small acreage owners, campers, and DIYers who need a portable, easy-to-handle saw for pruning, trimming, light firewood cutting, and campsite tasks. It's especially suited to users who prefer one-handed control, lightweight tools, and quick battery swap capability without sacrificing cutting speed or safety. If you want a compact electric alternative to heavier gas models for occasional to moderate yard work, this model provides a balance of power, runtime, and user-friendly features.