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@TRA
People who know batteries... I have a question. I have a Phillips front light that is great, but the 4 AA NiMH 2600 mAh batteries are getting tired. I have asked if its possible to replace the pack with 4 x Li-ion cells and it appears they are now available!
http://www.unbatteries.com/product/show.php?uid=1
Are the specs of the PH 5 compatible as a replacement? I'm guessing the built in USB charger of the light won't work with these?