This rechargeable battery is the power source of the wireless discussion units.
The battery is a high capacity Lithium-ion type, capable of providing up to 20 hours typical use from a full charge. Fully charging the DCN-WLIION from empty takes just 3 hours. Lithium-ion cells avoid the charge degradation issues associated with other rechargeable battery types. This offers maximum flexibility for scheduling recharges (no requirement to fully discharge batteries before recharging).
The 'intelligent' battery has a built-in microprocessor to control charging current and prevent overloading.