Pete K wrote:mallo, but that must assume a completely flat battery ? Where as the battery in question is probably 75% charged, as it still starts the engine. The red button Ctek 5 do the "Snow" function automatically (increases voltage slightly, when its below 5°C) Although it's worth checking you are in car mode (5A) and not bike mode (0.8A) charge, as that would explain the problem!
plocker wrote:I looked this morning and it was fully charged, unlocked the car and within a minute it was back down to 3 and charging. Case dismissed.