Bad advice. 11.6v is too low. Battery is in a deep cycle state at that voltage. Over time it will shorten the life or possibly not start depending on the weather.Why not use a hardwire kit with battery drain protection circuit inside? It will cut off the power when the battery voltage is lower than 11~11.6V so you won't have issue that you can not start your engine. But please make sure the wire is long enough (like more than 12ft) and it comes with fuse adapter matching with your car. Normally it comes with a microUSB or miniUSB charging head.
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