7DMKII problem with batteries

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THENITEOWL Forum Member • Posts: 52
7DMKII problem with batteries

Lately the batteries are discharging overnight or might just be loosing the connection. Both a new and old battery are doing this. If I remove the battery and reinstall it it will startup again and read at 50-60% battery level. Could it be dirty contacts?

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Canon PowerShot SX40 HS Canon EOS 7D Mark II Canon Extender EF 1.4x III Canon EF 100-400mm F4.5-5.6L IS II
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