I have a number of devices that are basically battery packs (Li-ion) with various accessories. These have a USB charging port which takes forever (well, relatively) when charging a 50-80 watt hour battery. The one device is a really nice work light and the other is a jump starter and device charger. The manual doesn't say not tu charge faster but it does limit to a USB device.
I know it's possible to use a 5v charger for these devices and I can make it work with USB but my charger does 4, 5 or 6.5 amps for a small wall wort - then there is the case of using a PSU 5v rail.
does anyone know if devices can be damaged by this? I would think that my car jump starter can handle higher amperage (hell it wasn't fully charged after 90+ hours on a 2.1A charging port!) as this thing discharges at 350 - 450 amps at 14.8v.
So what is the consensus?
I know it's possible to use a 5v charger for these devices and I can make it work with USB but my charger does 4, 5 or 6.5 amps for a small wall wort - then there is the case of using a PSU 5v rail.
does anyone know if devices can be damaged by this? I would think that my car jump starter can handle higher amperage (hell it wasn't fully charged after 90+ hours on a 2.1A charging port!) as this thing discharges at 350 - 450 amps at 14.8v.
So what is the consensus?