Amp Rate when charging ST-16

[Eagle's Eye Video]

I looked but I could not find anything specific... what is the max safe amp rate when charging the ST-16 battery with a USB cable? Saw a power strip with a USB rapid charge with a 4.8 A rate listed... would this fry the USB connection in the ST-16 or shorten the battery life? Currently using a standard 2.1 A USB plugin.

 

[PatR]

2.1A is safe. The best charge rate for a Li-on is approx 0.7C.

 

[Eagle's Eye Video]

Thanks! Knew you'd be the one to know...

 

[PatR]

Thanks. BTW, I frequently use a tablet charger to do my -16’s. Same 2.1A rate.