The FK Irons LightningBolt Battery Pack will turn any FK machine** from wired to wireless. You can easily change the voltage via voice command with the Darklab mobile app. The battery last for 10 hours with a 1.5 hour charge turn around. 

• Change voltage through voice via the Darklab app
• Lightweight at only 2 ounces
• Battery last up to 10 hours with 1.5 hour charge time
• Works with Fk Irons rotary and coil machines**
• Turns wired machines into wireless
• Charge in any USB-C port
• Warranty available through manufacture 

**not compatible with the EXO