Purchased my second shark shield a little over 2 years ago.
Last time I used I noticed that by the time I came in from surfing it had lost its charge.
I have tested in the swimming pool by recharging it but it goes to flashing green the minute I turn it on and put it in the pool.
Had the same problem with the last one but that was after almost 5 years of use and I didn't mind getting another (I figured a 5 year life was OK)
Lasting only 2 years sucks this time around. Anyone else had this problem