Has anyone used a portable USB charger battery to charge USB rechargeable lights? I am using a Serfas E-Lume 450 on the front, and a Serfas Cosmos 60 on the rear on my Terra Trike Traveler.
Will be going on rides where USB adapter won't have 110v available, or a USB port is not available.
Would like to here from anyone who have used these USB charger batteries for this purpose. There are some pretty high capacity (mah) units available. The E-Lume 450 uses 700 mah during recharging, but the literature with the Cosmos doesn't state that information. I'm guessing it uses a lesser charging rate than the 450. I would guess one could get multiple charges from one of the higher capacity units. What do you think?
Thanks for any info/experience in advance.