This makes it the perfect companion to follow you wherever you are. Take it to the BST post, to the flea market or to your field repair jobs.
This is why you need Tristar tester! Tristar (or "Hydra" in newer models) is an IC on the logic board of iDevices that is used for authentication of USB devices. It's purpose is to check the authenticity of any attached cable or device via the Lightning Port and to allow or deny data transmission or charging processes. By using uncertified accessories (such as knock-off data cables or Lightning-port-fans) this very sensitive chip can easily get damaged and stop working correctly.
The symptoms of a faulty Tristar/Hydra no function, rapid battery drain, etc. Are mostly similar to those of a faulty battery.This is why differential diagnosis between battery and logicboard problems is very complicated. However, the new battery will be damaged within weeks if not days and the symptoms will return. This not only results in damaged batteries but also in unsatisfied customers. Tristar tester can show typical Tristar/Hydra faults within seconds without opening the device. This enables you to detect these errors before or while checking the device in for repair and allows you to discuss the needed repairs right at the point of sale, avoiding unneeded repairs (such as battery replacements) and wasted parts.