Pictures as taken do not help much. The circuit card is part of a built in balance battery charger. One contact is common or ground, usually on an end of a connector but I have never seen a need to check a Karma battery yet. One contact is the main which is the other end of the battery cells, or battery pack, in series. The other contacts are individual cells. If using a volt meter, or a meter set to DC volts, you cannot short anything out as long as you touch each test lead to only one cell at a time. Depending on charge level the full pack will read around 14-16 volts and each cell around 3.5 to 4 volts. If you read nothing you are on 2 cell leads or a cell to main lead.
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