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  1. How can I keep Supra battery charged in winter without a battery tender and can’t drive it

    It was a few years ago, can't say I remember, didn't need any codes cleared though.

  2. How can I keep Supra battery charged in winter without a battery tender and can’t drive it

    I disconnected the negative battery terminal before a year long deployment and the car actually started just fine when reconnected so that might be an option. I don't think the temp got much below freezing though as it was in an underground garage.


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