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We don't have enough data to predict a B250e 12V battery fail, and replace it beforehand. To blindly replace the battery based on the date code, or vehicle miles seems wasteful to me.


A better plan would be to use a roadside service (AAA for example) to replace a defective battery. Often they have the replacement battery on their truck and also take credit card payments. Their tools can measure the health of the battery before pulling it out of the vehicle, and monitor charging performance (as an ICE car with alternator issues will result in a dead battery)


Peter,


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