When a TT15/T5 collar flashes red on charge, or fails to power on, it could be a possible indication that the battery is defective. If you see this occur, immediately take down the collar's serial number and give DU a call to check warranty status if you are at all unsure about the collar's age. If under warranty, get the...
Battery
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Garmin TT15X / TT15 Blink Patterns
TT15/TT15X Track and Train collars, like other Garmin tracking collars, utilize a light system to indicate the status of the collar. We get quite a few collars in that customers claim have lost GPS, only for us to start them up in-shop and see them work right out of the box. If a problematic collar is still under warranty, it's...