Want to make sure your device never runs out of juice? This lithium-ion battery from 3M gives your TR-600 belt-mounted air purifier a boost. Thanks to a runtime of six to twelve hours between charges, you can trust it to power your equipment throughout the working day. To keep things light while you're on the move, the battery weighs just 450g. As it's rechargeable, you can say goodbye to replacements and hello to reliable repeat performance.

• Light-up indicator so you can keep track of its charge level
• Can handle rinsing and temporary immersion in water for easy upkeep
• CE-approved to conform to European health, safety and environmental protection standards

• Chemical processing
• Food and beverage production
• Woodworking
• Foundries

You can top it up in under 3.5 hours, for a rapid return to service.