i bought one off my friend as it did not charged thinking i can fix it. i couldn't so i took it apart and measured stright from the terminals going into the control board from battery. however, terminals from the control board to the three sockets to the drone read zero volt. the board was bad and there is no way of fixing it. ill post pictures tomorrow to clearify the issue.Great Kcharuso, but how did you measure that?
i know the pictures don't help much and I didn't expexted to but there is a valid reason i took the pictures and dissembled the battery like so.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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Is there a chart of the contacts on the Karma battery that we can use a multimeter to check battery voltage? I would like to know the actual voltage and not just use the lights.