C8000 Battery Testing System User Manual
5
Do not exceed the battery manufacturer’s recommended
charge current and voltage limits for batteries.
Do not remove the battery from the adapter while the test
is running. To minimize arcing, stop or cancel battery
service before removing the battery from the adapter.
1.1.7
Charge and Discharge Lithium-ion (Li-ion) Batteries
Lithium-ion (Li-ion) batteries are safe when used as directed. Battery safety
cannot be assured when a battery pack is built with individual cells of an
unknown nature with a serial and parallel connection. Not all Li-ion cells are
suited for multi-cell packs. Only cells that meet tight voltage and capacity
tolerances can be used for serial and parallel connection. Mismatched packs are
subject to overcharge resulting in venting with flame and fire. Check with the cell
manufacturer to see if the cells are suitable for multi-cell packs.
In the past, single Li-ion cells were only available to authorized battery
manufacturers. Today, imports are becoming readily available and often fall
into the hands of the inexperienced. While most brand name cells are
equipped with an internal cell disconnect that permanently opens the current
path on high pressure, some brands do not provide this safeguard. Many
brands don’t use a separator that shuts down the battery when high
temperatures are reached. The internal safety features are omitted for cost
reasons.
Warning
Please follow these guidelines when charging and
discharging lithium-ion cell(s) and packs. Failing
to follow these rules could result in venting with
flame, explosion, fire and personal injury.
Explosion Hazard
Never connect cells in parallel and/or series that are not designed for that
purpose. A cell mismatch may overcharge and vent with flames.
Never charge or discharge the battery without connecting a working
protection circuit. Each cell must be monitored individually and the current
disconnected if an anomaly occurs.
Always attach a temperature sensor when charging and discharging the
battery. The temperature sensor must disconnect the current on excess
temperature.
Summary of Contents for C8000
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