Not really a big deal, but on my terrova, when we first start fishing, sometimes my battery meter only reads three lights, the full charge light flickers for a fraction of a second, but does not stay on. After 20-30 minutes of use, all four lights light up and work fine after that, until normal battery drainage causes it to go to three lights. It doesnt happen every time.....some trips it reads four lights at the start. My batteries are new, and always fully charged when we get to the lake, so that is not an issue. Do cold mornings cause this, until the batteries warm up a little? Anybody ever experience this? Thanks.