The battery seems low in cold weather, the engine turns slowly & fails to start

What is your question?

Ive replaced the battery a year ago & the glow plugs & its fine until theres cold weather. Also it has the same problem if it hasnt been used for a few days. Any suggestions guys?

What makes this problem better or worse?

Very cold weather

How long has your 1995 Land Rover Defender 90 had this problem?

Every winter