Listen Technologies LA-317 - Manual (Page 38)

34
Information
Listen LA-362 NiMH batteries are industrial grade and provide constant current to Listen products.
These batteries provide 2100 milliamp hours (mAh) of storage capacity. When used with Listen
supplied batteries, Listen products should provide the following operational time after batteries are
fully charged:
Receivers: 15 hours
Transmitters: 8 hours
Listen recommends that new batteries be put through two-charge cycles prior to use.
Nickel Metal Hydride (NiMH) batteries have no memory effect, so each charge offers full
recharge capacity.
NiMH batteries can be repeatedly charged to full capacity from any level of capacity.
NiMH batteries typically maintain optimal performance for 500 to 700 charge cycles. Listen
recommends that batteries be replaced after 2 years of service or whenever the batteries
no longer hold a charge.
Please note that NiMH batteries should be recharged if they have been sitting idle for more than
two months, as they lose around 20-30% of their charge each month.
To avoid battery discharge while not using Listen products, it is recommended to leave units in a
powered case, as the maintenance charge will ensure the batteries remain at full charge. Make
sure the case lid remains open or removed. The charging process generates heat and ventilation
is required.
NiMH Battery Technology