SHINTYOOL 21V 4.0Ah Lithium Battery with LED Indicator & Charger

Power on with confidence

Meet the SHINTYOOL 21V Lithium Battery, a 4.0 Ah pack designed to keep your outdoor tools running when you need them most. The integrated LED fuel gauge lets you see remaining power at a glance, so you can plan swaps and avoid downtime on the job site.

Designed for versatility, this battery is compatible with a broad set of popular tool models in the BL and LXT families. Whether you rely on a leaf blower to clear debris or a mini saw for quick cuts, this pack slots into your existing setup with minimal effort.

Key benefits at a glance

• Wide compatibility across major models, enabling you to power multiple tools with a single pack
• 4.0 Ah capacity balances runtime and weight for comfortable daily use
• 21-volt lithium chemistry provides steady performance and responsive tool power

The battery also features smart charging. The included charger supports universal 100-240V input with a simple LED indicator to show charging status, making it easy to monitor progress. The adapter is designed for use in a variety of regions, helping you stay productive whether at home or on site.

Safety and care

• Multi-protect safety system includes overload protection, overheat protection, and over-discharge protection
• Charging notes to protect longevity: do not charge for more than 6 hours; fully charge before first use; avoid overnight charging

Real-world use

In the field, you can swap quickly between tools like a leaf blower and a mini saw, maintaining momentum without long downtimes. The 4.0 Ah capacity provides meaningful stamina for longer sessions, while the 21 V design keeps weight manageable for extended work days.

• Supports longer sessions on yard tasks with reliable performance
• Conveniently powers compact cutting and blowing tasks with minimal setup

Shop with confidence

We back this SHINTYOOL battery with a customer-first policy: if you are not completely satisfied, we offer a full refund or replacement. Note that this 21 V pack is similar to other 21 V options, so please reach out with a quick question if you’re unsure about compatibility.