- #1
cjben
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Hi,
I bought 2-AA (with pins tabs) rechargeable batteries for a Braun electric shaver. Checked the polarity of the old batteries, marked it on the board, and soldered the new batteries accordingly. (In series.)
First charge lasted 4 weeks. Next 3-4 charges lasted less and less. Now, batteries won't even hold a charge overnight.
Battery supplier claims that this symptom is classic for reversed polarity...
Does this make sense? Any thoughts? Could the old batteries have themselves become reversed in polarity? What can be tested at this point?
Thank you,
Ben
I bought 2-AA (with pins tabs) rechargeable batteries for a Braun electric shaver. Checked the polarity of the old batteries, marked it on the board, and soldered the new batteries accordingly. (In series.)
First charge lasted 4 weeks. Next 3-4 charges lasted less and less. Now, batteries won't even hold a charge overnight.
Battery supplier claims that this symptom is classic for reversed polarity...
Does this make sense? Any thoughts? Could the old batteries have themselves become reversed in polarity? What can be tested at this point?
Thank you,
Ben
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