Star Insterface SD4 (C4) battery pack diagram needed

[vanderferdas]

Hi guys

Anybody can help me with the pinout of the battery pack of my SD4 is correct? I dont locate any wiring, picture or something like that. Battery pack works with inserted batteries, but usual "error charge battery" is shown and i want to confirm if my battery is correctly wired from factory from the begining. Any help will be apreciated how can i solve it.

I thought send unit to stardiag company, but cost of shipping and work for a clone (high quality clone suposed but a clone finally) not worth it...

Thanks in advance

PD: i attach a picture were you can see how is wired my unit
PD2: Duracell 2500mAh rechargable are used

[Meat-Head]

Not knowing anything about this device. Looking at the spring is it possible one batter in wrong way


take another photo of other end