Road running, trail running, ultra running, obstacle course racing - go longer & stronger with a remote external battery for your Ferei super bright headlamp from Run Vault. Almost 18 hours running time for the HL40II 1000 Lumen Headlamp & almost 9 hours for the 2200 Lumen HL50II Headlamp. Don&

Ferei Long Life Battery to suit HL40II & HL50II Headlamps

Regular price $104.95
GST included.
FREE SHIPPING on all orders over $69
Stash this in your pack to provide almost 18 hours of burn time for your HL40II headlamp!

* Professional lithium battery power pack for Ferei Headlamp HL40II
* 5.5 DC Jack and OD 3.5mm cable with weatherproof connections
* 4 x 18650 Li-ion battery inserted with protection circuit board
* Weight: 235g
* Capacity: 10400mAh
* Output Voltage: 3.7 to 4.2V

**Please note - to connect this battery pack to your HL40II or HL50II Headlamp you will also need the extension cable - please order this with your battery.

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