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SLA Battery minimum discharge voltage

Recently I installed a solar panel. I used a 12 volts Sealed Lead Acid Maintenance Free battery with it. There was a huge lot of confusion as to what to set the minimum voltage or cutoff voltage. The charge controller came with a preset of 10.8 volts. But on the internet many forums and sites suggested to keep the cutoff voltage to around 11.5, some said I can go as low as 9.0.

Confused I started going through manuals or leaflets of battery companies and understood that it better to refer to the manual or leaflet or company information than to rely on the random articles and forum posts on the internet.
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