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Lithium ion
cells have an operating voltage range from 2.8v absolute minimum to
4.2V absolute maximum. Charging the cells beyond 4.2V will cause
them to heat up and ultimately explode and ignite. Discharging a
cell below 2.8v will damage the cell rendering it useless. A
management circuit is essential to keep the cells in balance and
ensure proper charging and discharging.
These
circuits are suitable for hobbyists wanting to use Lithium polymer
and Lithium ion cells. We do not accept liability/responsibility for
the safety of operation of these circuits and suggest that when
charging check the voltage balance and heating of any cells
frequently during the charging period. |
