Hi all

Just a quick question for anyone that owns a shark shield.I got mine last week and plugged it in to charge but it was fully charged. I went swimming with it for about 30mins and when I got back, plugged it into the charger. Still says its fully charged.The red light and green light are both on and solid when plugged into the charger. Are both lights supposed to be on when charged or just the green? Does the unit need to be drained below a certain point before it will accept being charged?

Thanks for any info