I want to use these inexpensive 18650 battery chargers but if you accidentally connect the battery in reverse polarity, the charger fries in less than a second. Picture 1 shows the normal operating mode of the charger and the reverse connection NO NO and picture 2 shows what I am thinking might protect the charger from reverse bias damage while still allowing enough current to flow when the batter is connected properly for normal charging.
Will it work?
Will it work?
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