This 6x18650, 8.4V and 6.6AH battery lasts an extra 50% longer than the standard battery - so the front light will run for around 3.3hrs on full power.

It weighs just 284g, comes in a protective rubber casing and a pouch with velcro straps, to attach it to the bike.

Also comes with a charger, which fully recharges it in 3-3.5hrs.