Is the issue EMF (Electromotive force)?- I would suspect EMI (Electromagnetic Interference) would be the culprit- RF (radio frequency) interference or the concrete and steel that surrounds you. This will xxx8220;blockxxx8221; the BB from receiving the cellular network. The BB then continues to search for the cellular network which requires much more power than the usual connected state.
When in the hydroelectric generating station, note if your BB is searching for a cell site. If so, turn the network connection off until you can connect to the network and preserve your battery.
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