Free Headlamp Power Battery is available in four sizes for different activities and burn times. All batteries are compatible with all Free series headlamps and feature a built-in power bank function, allowing you to charge your phone, watch or bike computer via USB-C. The batteries are water-resistant according to the IPX5 standard and feature a 5-level battery indicator.
Choose the right battery for your activity
XS: 14.8 Wh
A lightweight 116-gram Li-ion battery that is easy to carry in your pocket, running vest or attach to the back of the headband for everyday training and fast-paced sessions.
S: 24.1 Wh
A compact and lightweight 150-gram Li-ion battery that offers a great balance between low weight and longer burn time. The battery can easily be carried in your pocket, running vest or attached to the back of the headband.
M: 36 Wh
A powerful 202-gram Li-ion battery developed for long training sessions and extended adventures. Can be attached to a helmet, bike frame or handlebar using separate mounts.
L: 72 Wh
Silva’s most powerful 367-gram Li-ion battery, developed for long sessions where maximum burn time is essential.
- Battery compatible with all Free series headlamps
- Power bank function – use the battery to charge other devices via USB-C
- Water-resistant – meets IPX5 standard
- 5-level battery indicator
| SKU | SI-38693 |
|---|---|
| Weight (xs) | 116 g (XS), 150 g (S), 202 g (M) or 367 g (L) |