Can I charge two lithium ion batteries connected in series? What is more efficient, series or parallel in terms of charging?
Thank you for answering this question.
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\$\begingroup\$ What happens if one gets hot? \$\endgroup\$– Solar MikeCommented Apr 22, 2018 at 17:21
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2\$\begingroup\$ Are you using a suitable balancing circuit? \$\endgroup\$– user16324Commented Apr 22, 2018 at 17:24
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2\$\begingroup\$ Are you designing the charger ? \$\endgroup\$– OptionpartyCommented Apr 22, 2018 at 17:57
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\$\begingroup\$ I am trying to charge 2 18650 lithium batteries directly into a supply. (Not in a 220v AC) \$\endgroup\$– Mark MagbanuaCommented Apr 25, 2018 at 1:49
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I would be cautious when charging these batteries I would think these batteries should each have their own individual circuit with designs to closely monitor current and also means to monitor battery temperature and finally cell voltage
