Wurkkos HD15 Manual Del Usuario página 6

Troubleshooting: Clean battery contacts regularly as dirty contacts may
impair the performance of the flashlight. If you experience problems (flicker,
shine intermittently or failure to turn on) the following root causes and
solutions should be tried:
Reason A: The battery needs replacement (Battery voltage is below 2.7V).
Solution: Replace battery with an approved type of fully charged battery.
Reason B: Threads, PCB board contact or other contacts are dirty.
Solutions: Please clean the contact points with a cotton swab soaked in
rubbing alcohol.
Reason C: The flashlight will not turn on upon first use.
Solution: Please do not forget to remove the insulation stickers from the
battery on first use.
If the above methods do not work please refer to the warranty policy before
contacting your authorized distributor.
Please contact us if you have any questions. If your product is defective please
contact us for refund or replacement within warranty period.
Wurkkos Limited:
Tel: +86-137-28792565
E-mail: wurkkos@foxmail.com
Web: www.wurkkos.com
Address: No.1 Qinglin Industrial Center, Guanlan Street, Longhua New District,
Shenzhen 518000, China