I have a couple GW2500 watches. One is a GW2500B (grey bezel, regular LCD) that I bought in 2009 and doing just fine on the original battery. The other is a GW2500-1A (silver bezel, inverted LCD) that I bought in 2011 and has went dead on me. I just replaced the battery in it and got the watch going again, but I've had it under the brightest lamp I have for the last 3 days and I can't get it past M charge. The 2500B gets worn enough when I'm not wearing my Apple watch that it never gets off H, but the 2500-1A is giving me fits. If I remember right, this watch was doing the same thing before I put it up and just wore the other one full time before I got my Apple and switch back and forth depending on my activity.
How long does it take to get these to a full charge and if it still doesn't get to a full charge, what could be the issue?